Sign in today to find solutions:

Forgot your password?

Don't have an account? Sign up

 
SIMATIC NET
PROFIBUS Networks
Manual
05/2000
6GK1970–5CA20–0AA1
Release 2
Symbols, Contents
PROFIBUS Networks
Topologies of SIMATIC NET PROFIBUS
Networks
Configuring Networks
Passive Components of RS–485 Networks
Active Components of RS–485 Networks
Passive Components for PROFIBUS–PA
Testing PROFIBUS
Lightning and Surge Voltage Protection for
LAN Cables Between Buildings
Installing LAN Cables
Installing Instructions for SIAMTIC NET
PROFIBUS Plastic Fiber Optic with Simplex
Connenctors or BFOC Connectors and Pul-
ling Loop for the FO Standard Cable
Installing Network Components in Cubicles
Dimension Drawings
Operating Instructions ILM / OLM / OBT
General Information
References
SIMATIC NET – Support and Training
Glossary, Index
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
G
H
I
J

Summary of Contents

  • Page 1

    PROFIBUS Networks Manual 05/2000 6GK1970–5CA20–0AA1 Release 2 Symbols, Contents PROFIBUS Networks Topologies of SIMATIC NET PROFIBUS Networks Configuring Networks Passive Components of RS–485 Networks Active Components of RS–485 Networks Passive Components for PROFIBUS–PA Passive Components for Electrical Networks Active Components for Optical Networks...

  • Page 2

    Trademarks SIMATICR, SIMATIC HMIR and SIMATIC NETR are registered trademarks of SIEMENS AG. HCS is a registered trademark of Ensign–Bickford Optics Company. Third parties using for their own purposes any other names in this document which refer to trademarks might infringe upon the rights of the trademark owners.

  • Page 3

    Symbols PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 PROFIBUS 830–1 T connecting cable PROFIBUS 830-2 connecting cable LAN cable (twisted-pair) Duplex FO cable Wireless transmission (infrared) Bus connector S7–300 S7–400 ET200S OP25 ET 200M (with IM 153–2 FO) PG/PC/OP AS-i branch...

  • Page 4

    Symbols Optical link module (OLM) Optical bus terminal (OBT) Infrared link module (ILM) Repeater PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 5

    Transmission Techniques for Optical Components 1.2.6 Transmission Technique for Wireless Infrared Technology 1.2.7 Transmission Technique for PROFIBUS-PA Topologies of SIMATIC NET PROFIBUS Networks Topologies of RS-485 Networks 2.1.1 Components for Transmission Rates up to 1.5 Mbps 2.1.2 Components for Transmission Rates up to 12 Mbps .

  • Page 6: Table Of Contents

    3.3.2 Configuring Redundant Optical Rings with OLMs 3.3.3 Example of Configuring the Bus Parameters in STEP 7 Passive Components for RS-485 Networks SIMATIC NET PROFIBUS Cables 4.1.1 FC Standard Cable 4.1.2 FC-FRNC Cable (LAN cable with halogen-free outer sheath) 4.1.3 FC Food Cable .

  • Page 7: Table Of Contents

    Installing and Uninstalling the RS-485 Repeater Ungrounded Operation of the RS-485 Repeater Connecting the Power Supply Connecting the LAN Cable PROFIBUS Terminator Passive Components for PROFIBUS-PA FC Process Cable SpliTConnect Tap Passive Components for Electrical Networks Fiber-Optic Cables Plastic Fiber-Optic Cables 7.2.1 Plastic Fiber Optic, Duplex Cord 7.2.2...

  • Page 8: Table Of Contents

    C.7.1 Instructions for Installing Electrical and Optical LAN cables Additional Instructions on Installing Fiber-Optic Cables Installation Instructions for SIMATIC NET PROFIBUS Plastic Fiber-Optic with Simplex Connectors or BFOC Connectors and Pulling Loop for the FO Standard Cable ..............

  • Page 9: Table Of Contents

    Dimension Drawings Infrared Link Module ILM Dimension Drawings Optical Link Module OLM Operating Instructions ILM / OLM / OBT General Information ........... . Abbreviations/Acronyms References .

  • Page 10

    Contents PROFIBUS Networks SIMATIC NET viii 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 11

    PROFIBUS NETWORKS...

  • Page 12

    PROFIBUS NETWORKS Local Area Networks in Manufacturing and Process Automation 1.1.1 General Introduction Communication Systems The performance of control systems is no longer simply determined by the programmable logic controllers, but also to a great extent by the environment in which they are located.

  • Page 13

    S Electrically, intrinsically safe 1.1.2 Overview of the SIMATIC NET System SIMATIC NET is the name of the communication networks connecting SIEMENS programmable controllers, host computers, work stations and personal computers. SIMATIC NET includes the following: S The communication network consisting of transmission media, network...

  • Page 14: Cable

    PROFIBUS NETWORKS Industrial Ethernet/Fast Ethernet A communication network for the LAN and cell area using baseband technology complying with IEEE 802.3 and using the CSMA/CD medium access technique (Carrier Sense Multiple Access/Collision Detection). The network is operated on triaxial cable S 100 Twisted pair cables S Glass fiber-optic cable...

  • Page 15

    Basics of the PROFIBUS Network EN 50170 SIMATIC NET PROFIBUS products and the networks they make up comply with the PROFIBUS standard EN 50170 (1996). The SIMATIC NET PROFIBUS components can also be used with SIMATIC S7 to create a SIMATIC MPI subnet (MPI = Multipoint Interface).

  • Page 16

    PROFIBUS NETWORKS Transmission Media PROFIBUS networks can be implemented with the following: S Shielded, twisted pair cables (characteristic impedance 150 ) S Shielded, twisted pair cables, intrinsically safe (with PROFIBUS-PA) S Fiber-optic cables S Wireless (infrared technology) The various communication networks can be used independently or if required can also be combined with each other.

  • Page 17

    1.2.1 Standards SIMATIC NET PROFIBUS is based on the following standards and directives: IEC 61158–2 to 6: 1993/2000 Digital data communications for measurement and control – Fieldbus for use in industrial control systems EN 50170-1-2: 1996 General purpose field communication system...

  • Page 18

    PROFIBUS NETWORKS 1.2.2 Access Techniques TOKEN BUS/Master-Slave Method Network access on PROFIBUS corresponds to the method specified in EN 50170, Volume 2 “Token Bus” for active and “Master-Slave” for passive stations. Master Master Slave Master = active node Slave = passive node Figure 1-1 Principle of the PROFIBUS Medium Access Technique Token rotation...

  • Page 19

    Active and Passive Nodes The access technique is not dependent on the transmission medium. Figure 1-1 “Principle of the PROFIBUS Medium Access Technique” shows the hybrid technique with active and passive nodes. This is explained briefly below: S All active nodes (masters) form the logical token ring in a fixed order and each active node knows the other active nodes and their order in the logical ring (the order does not depend on the topological arrangement of the active nodes on the bus).

  • Page 20

    PROFIBUS NETWORKS 1.2.4 Transmission Techniques According to EIA Standard RS-485 EIA Standard RS-485 The RS-485 transmission technique corresponds to balanced data transmission as specified in the EIA Standard RS-485 /4/. This transmission technique is mandatory in the PROFIBUS standard EN 50170 for data transmission on twisted pair cables.

  • Page 21

    PROFIBUS cables and bus connectors meet this specification. If reductions in the segment length are necessary when using special versions of the bus cable with increased d.c. loop resistance, this is pointed out in the sections on “Configuration” and “SIMATIC NET PROFIBUS Cables”. PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 22

    “Fiber Optic Data Transfer for PROFIBUS” /3/. Integrated Optical Interfaces, OBT, OLM The optical version of SIMATIC NET PROFIBUS is implemented with integrated, optical ports, optical bus terminals (OBT) and optical link modules (OLM). Duplex fiber-optic cables are used as the medium made of glass, PCF or plastic fibers.

  • Page 23

    Restrictions: S Frame throughput times are increased compared with an electrical network S The assembly of glass fiber-optic cables with connectors requires specialist experience and tools S The absence of a power supply at the signal coupling points (node attachments, OLMs, OBTs) stops the signal flow Characteristics of the Optical Transmission Technique The optical transmission technique has the following characteristics:...

  • Page 24

    PROFIBUS NETWORKS 1.2.6 Transmission Technique for Wireless Infrared Technology The wireless PROFIBUS network uses infrared light for signal transmission. The only transmission medium is a free line-of-sight connection between two nodes. The maximum distance covered is approximately 15 m. Wireless networks are implemented using infrared link modules (ILM).

  • Page 25

    1.2.7 Transmission Technique for PROFIBUS-PA IEC 61158-2 Standard The transmission technique corresponds to the IEC 61158-2 standard (identical with EN 61158-2). The transmission medium is a shielded, twisted pair cable. The signal is transmitted as a synchronous data stream Manchester-coded at 31.25 Kbps. In general, the data line is normally also used to supply power to the field devices.

  • Page 26

    PROFIBUS NETWORKS PROFIBUS Networks SIMATIC NET 1-16 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 27

    Topologies of SIMATIC NET PROFIBUS Networks PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 28

    S Components for transmission rates from 9.6 Kbps to a maximum of 12 Mbps LAN Cable The transmission media used are the SIMATIC NET PROFIBUS cables described in Chapter 4. The technical information below applies only to networks implemented with these cables and SIMATIC NET PROFIBUS components.

  • Page 29: Components For Transmission Rates Up To

    Connecting Segments Using RS-485 Repeaters By using RS-485 repeaters, segments can be interconnected. The RS-485 repeater amplifies the data signals on the LAN cables. You require an RS-485 repeater when you want to attach more than 32 nodes to a network or when the permitted segment length is exceeded.

  • Page 30

    Topologies of SIMATIC NET PROFIBUS Networks 2.1.2 Components for Transmission Rates up to 12 Mbps The following bus attachment components can be used for transmission rates up to 12 Mbps: Table 2-1 Bus Attachment Components for Transmission Rates up to 12 Mbps...

  • Page 31

    Table 2-1 Bus Attachment Components for Transmission Rates up to 12 Mbps, continued Optical Bus Terminal OBT PROFIBUS Terminator Topologies of Optical Networks Interfacing Electrical and Optical Networks/Components If you want to cover larger distances with the fieldbus regardless of the transmission rate or if the data traffic on the bus is threatened by extreme levels of external noise, you should use fiber-optic cables instead of copper cable.

  • Page 32

    Topologies of SIMATIC NET PROFIBUS Networks 2.2.1 Topology with Integrated Optical Interfaces The optical PROFIBUS network with nodes having an integrated FO interface is structured as a bus topology. The PROFIBUS nodes are interconnected in pairs by duplex fiber-optic cables.

  • Page 33

    PROFIBUS Optical Bus Terminal (OBT) Using a PROFIBUS optical bus terminal (OBT), an individual PROFIBUS node without an integrated FO port or a PROFIBUS RS-485 segment can be attached to the optical PROFIBUS network (see Figure 2-2 ). The attachment is made to the RS-485 interface of the OBT using a PROFIBUS cable or a preassembled connecting cable.

  • Page 34

    Bus Topologies Figure 2-3 shows a typical example of a bus topology In a bus structure, the individual SIMATIC NET PROFIBUS OLMs are connected together in pairs by duplex fiber-optic cables. At the start and end of a bus, OLMs with one optical channel are adequate, in between, OLMs with two optical channels are required.

  • Page 35

    Star Topologies with OLMs Several optical link modules are grouped together to form a star coupler via a bus connection of the RS-485 interfaces. This RS-485 connection allows the attachment of further DTEs until the maximum permitted number of 32 bus attachments per segment is reached.

  • Page 36

    Topologies of SIMATIC NET PROFIBUS Networks Monitoring FO Links Using the echo function, the connected OLMs can monitor the fiber-optic sections. A break on a link is indicated by a display LED and by the signaling contact responding. Even if only one transmission direction is lost, the segmentation triggered by the monitoring function leads to safe disconnection of the OLM from the star coupler.

  • Page 37

    A break on a fiber-optic cable between two modules is detected by the modules and the network is reconfigured to form an optical bus. The entire network remains operational. If a module fails, only the DTEs or electrical segments attached to the module are separated from the ring;...

  • Page 38

    Topologies of SIMATIC NET PROFIBUS Networks Alternative Cabling Strategy If the distance between two OLMs turns out to be too long, a structure as shown in Figure 2-6 can be implemented. ET 200M OP 25 À À À À ET 200M OP 25 À...

  • Page 39

    2.2.3 Combination of Integrated Optical Interfaces and OLMs Note The optical ports of the OLMs are optimized for greater distances. The direct coupling of the optical ports of an OLM with an OBT or integrated optical ports is not possible due to differences in the technical specifications. Attaching Glass FO Cables to Buses Made up of Integrated Optical Interfaces The operating wavelength of the integrated optical interfaces and the OBT is optimized for the use of plastic or PCF fibers.

  • Page 40

    Topologies of SIMATIC NET PROFIBUS Networks Topologies of Wireless Networks Infrared Link Module (ILM) In SIMATIC NET, wireless PROFIBUS networks are implemented with the “Infrared Link Module (ILM)”. Figure 2-8 PROFIBUS ILM Maximum Length of a Link Regardless of the transmission rate, the maximum length of a link is 15 m. The infrared light used for data transmission is radiated at an angle of +/- 10 the mid axis.

  • Page 41

    Master OP 25 À Master PG/PC/OP PROFIBUS master network segment Master S7-400 À À Terminating resistor activated 2 LAN cable for PROFIBUS Figure 2-9 Point-to-Point Link with Two PROFIBUS ILMs Figure 2-9 illustrates the typical structure of a PROFIBUS network with master and slave nodes and an infrared link with two PROFIBUS ILMs.

  • Page 42

    Topologies of SIMATIC NET PROFIBUS Networks Master S7-400 À Master PG/PC/OP Master OP 25 Slave ET 200M À À Terminating resistor activated LAN cable for PROFIBUS Figure 2-10 Point-to-Multipoint Link Using PROFIBUS ILMs (One Master Subnet, Three Subnets with Slaves)

  • Page 43

    Topologies with PROFIBUS-PA Bus and Star Topology With PROFIBUS-PA, the topology can be either a bus or star. SpliTConnect System The SpliTConnect tap (T tap) allows the structuring of a bus segment with DTE attachment points. The SpliTConnect tap can also be cascaded with the SpliTConnect coupler to form attachment distributors.

  • Page 44

    Topologies of SIMATIC NET PROFIBUS Networks DP/PA coupler Ex [i] 6ES7 157-0AD00-0XA0 Protection EEx [ia] II C x 90 mA DP/PA coupler Ex [i] 6ES7 157-0AD80-0XA0 24 V DC Protection EEx [ib] II C x 110 mA PROFIBUS-DP DP/PA coupler...

  • Page 45

    Table 2-2 Tap Line Lengths for DP/PA Couplers Number of tap lines 1 to 12 13 to 14 15 to 18 19 to 24 PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 Maximum length of the tap line DP/PA coupler DP/PA coupler Ex [i] max.

  • Page 46

    Topologies of SIMATIC NET PROFIBUS Networks Connectivity Devices 2.5.1 DP/DP Coupler Uses The PROFIBUS-DP/DP coupler is used to link two PROFIBUS-DP networks together. Byte data (0 to 244 bytes) is transmitted from the DP master of a first network to the DP master of another network and vice-versa.

  • Page 47

    The configuration is set using the GSD file and the configuration tool of the attached PROFIBUS-DP master. The data length is set with the relevant configuration tool. PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 Master S7-300 SIEMENS DP/DP COUPLER À Slave ET 200M Slave ET 200M À...

  • Page 48

    Topologies of SIMATIC NET PROFIBUS Networks 2.5.2 Connecting to PROFIBUS-PA DP/PA Bus Coupling The DP/PA bus coupler is the link between PROFIBUS-DP and PROFIBUS-PA. This means that it connects the process control systems with the field devices of the process automation (PA).

  • Page 49

    2.5.3 DP/PA Coupler Figure 2-15 below illustrates how the DP/PA coupler is included in the system. Industrial Ethernet Process control level DP master Cell level PROFIBUS-DP ET200X Field level Explosion-protected area Figure 2-15 Linking the DP/PA Coupler into the System Uses of the DP/PA Coupler The DP/PA coupler is available in two versions: S DP/PA coupler Ex [i]: You can attach all field devices certified for...

  • Page 50

    Topologies of SIMATIC NET PROFIBUS Networks Properties of the DP/PA Coupler (General) The DP/PA coupler has the following characteristics: S Electrical isolation between PROFIBUS-DP and PROFIBUS-PA S Conversion of the physical transmission mechanism between RS-485 and IEC 61158-2 S Diagnostics using LEDs S Transmission rate on PROFIBUS-DP 45.45 Kbps...

  • Page 51

    2.5.4 DP/PA Link Definition The DP/PA link consists of the IM 157 and up to a maximum of five DP/PA couplers. The DP/PA link is a DP slave at the PROFIBUS-DP side and a PA master at the PROFIBUS-PA side. Uses With the DP/PA link, you have an isolated interconnection between PROFIBUS-PA and PROFIBUS-DP with transmission rates of 9.6 Kbps to...

  • Page 52

    Topologies of SIMATIC NET PROFIBUS Networks Properties The DP/PA link has the following characteristics: S Diagnostics with LEDs and the user program S DP slave and PA master S Can be operated at all transmission rates (9.6 Kbps to 12 Mbps)

  • Page 53

    Rules The following rules must be taken into account when extending PROFIBUS-PA: S There can be a maximum of 31 PA field devices in a PROFIBUS-PA system S Only one device supplying power (=DP/PA coupler) can be connected in a physical PROFIBUS-PA segment.

  • Page 54

    Topologies of SIMATIC NET PROFIBUS Networks 2.5.5 Connecting PROFIBUS-DP to RS-232C Design Figure 2-18 DP/RS-232C Link for PROFIBUS-DP The DP/RS-232C link consists of a compact 70 mm housing for standard rail mounting. Ideally the module should be installed vertically. The modules can be inserted one beside the other without gaps being necessary.

  • Page 55

    PROFIBUS-DP with the DP/RS-232C link. The DP/RS-232C link supports the procedures 3964 R and free ASCII protocol. Master S7-400 SIEMENS Figure 2-19 Example of a Configuration with DP/RS-232C Link How the DP/RS-232C Link Works The PROFIBUS-DP/RS-232C link is connected with the device over a point-to-point connection.

  • Page 56

    Topologies of SIMATIC NET PROFIBUS Networks Parameter Assignment The PROFIBUS-DP address can be set using two switches on the front panel. To configure the unit, you use the GSD file and the configuration tool of the connected device, for example STEP 7.

  • Page 57

    Uses The DP/AS-interface link connects the PROFIBUS-DP fieldbus with the AS-interface. The DP/AS-interface link 65 can be connected to any PROFIBUS-DP master capable of handling parameter assignment and diagnostic frames with a length of 32 bytes. The DP/AS-interface link 65 allows the actuator-sensor interface to be used as a subnet for PROFIBUS-DP.

  • Page 58

    Topologies of SIMATIC NET PROFIBUS Networks How the DP/AS-Interface Link 65 Works The DP/AS-interface link 65 links PROFIBUS-DP with the AS-interface with degree of protection IP 65. The DP/AS-interface link 65 can be connected to any PROFIBUS-DP master that can send parameter assignment frames with a length of 32 bytes.

  • Page 59

    2.5.7 Connecting with the DP/AS-Interface Link 20 Design Figure 2-22 DP/AS-Interface Link 20 The DP/AS-interface link 20 consists of a small, compact casing with degree of protection IP20. The LEDs on the front panel indicate the following: S AS-Interface statuses S Attached and active slaves and their operability S PROFIBUS slave address S PROFIBUS bus errors and diagnostics...

  • Page 60

    Topologies of SIMATIC NET PROFIBUS Networks Uses The DP/AS-interface link 20 implements a small, cost-effective link between PROFIBUS and AS-interface. The DP/AS-interface link 20 requires no additional power supply, the power is supplied on the AS-interface cable. The AS-interface segment can be started up without PROFIBUS-DP being in operation.

  • Page 61

    How the DP/AS Interface Link 20 Works With the DP/AS-interface link 20, up to 248 binary elements are accessible to a DP master on the AS-interface (124 inputs and 124 outputs). You can therefore combine the advantages of PROFIBUS-DP and AS-interface in a plant. The DP/AS-interface link 20 can be used in the AS-interface standard mode (M2).

  • Page 62

    Topologies of SIMATIC NET PROFIBUS Networks 2.5.8 Connecting PROFIBUS-DP to instabus EIB Design Figure 2-24 DP/EIB Link The DP/EIB link allows a connection between the two open standard systems for industrial automation PROFIBUS-DP and building automation instabus EIB. This provides an ideal connection between the high performance of the PROFIBUS components and the extreme flexibility of the instabus EIB system.

  • Page 63

    Building Automation In other words, we are assuming that instabus EIB exists and that you want to use, for example, an S7 PLC for administrative control tasks or, for example, an HMI system for central operator control and monitoring. The main emphasis here is in offices or apartment blocks etc.

  • Page 64

    Topologies of SIMATIC NET PROFIBUS Networks S7-300 Step 7 COM PROFIBUS EIB- RS-232 interface Figure 2-25 Example of a System Structure using DP/EIB Link How the DP/EIB Link Works The data objects of the instabus EIB are mapped in the PROFIBUS I/O area.

  • Page 65

    Configuring The link module can be configured as a DP slave, for example with the standard tools STEP 7 or COM PROFIBUS and on the instabus EIB using the configuration software ETS 2. S DP A GSD file is supplied with the manual. The DP slave address is set with a coding switch on the DP/EIB link.

  • Page 66

    Topologies of SIMATIC NET PROFIBUS Networks PROFIBUS Networks SIMATIC NET 2-40 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 67

    Configuring Networks Configuring Networks PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 68

    Configuring Networks Configuring Electrical Networks PROFIBUS Networks PROFIBUS networks were specially designed for use in an industrial environment and one of their main features is their degree of immunity to electromagnetic interference resulting in high data integrity. To achieve this degree of immunity, certain guidelines must be adhered to when configuring electrical networks.

  • Page 69: Segments For Transmission Rates Up To A Maximum Of

    Note The power supply to terminating resistors must not be interrupted by turning off the DTE or repeater or by unplugging the bus connector or tap line. If the power supply to the terminating resistors cannot be guaranteed, the PROFIBUS terminator must be used.

  • Page 70

    Configuring Networks Length of the Tap Lines If you do not attach the LAN cable directly to the bus connector (for example,when using a PROFIBUS bus terminal), you must take into account the maximum possible tap line length! The following table shows the maximum permitted lengths of tap lines per bus segment: Table 3-2 Lengths of the Tap Lines per Segment...

  • Page 71

    Value Factors To be able to define permitted configurations, a method is necessary with which the attached components can be evaluated in terms of their capacitive bus load. This is achieved by assigning value factors to the components (see Table 3-4 ). PROFIBUS interfaces implemented as 9-pin sub-D female connectors (CPs, OLMs...), do not have their own value factors.

  • Page 72

    Configuring Networks Rules At a transmission rate of 1.5 Mbps, the following rules apply to the permitted number of nodes and their distribution/layout on a SIMATIC NET PROFIBUS segment: 1. The maximum permitted number of nodes on any segment is 32.

  • Page 73

    Table 3-5 Examples Illustrating the Configuration Rules No special conditions if the length of the LAN cable between two DTEs > 10 m No special conditions if the length of the LAN ca- bles between two DTEs is greater than the sum of values of both DTEs.

  • Page 74

    Configuring Networks 3.1.3 Segments for Transmission Rates up to a Maximum of 12 Mbps Transmission Rate up to a Maximum of 12 Mbps Table 3-6 Possible Segment Lengths – FC Standard Cable Transmission Rate – FC Robust Cable in Mbps –...

  • Page 75

    3.1.4 Configuring Electrical Networks with RS-485 Repeaters RS-485 Repeater To increase the number of nodes (>32) in a network or to extend the cable length between two nodes, segments can be connected together using RS-485 repeaters to form a network. Figure 3-1 illustrates how several segments can be connected together with repeaters to create a network.

  • Page 76

    Configuring Networks Configuring When configuring an electrical network with RS-485 repeaters, the following conditions must be taken into account: S The maximum segment length for the transmission rate must be adhered to (see Table 3-1, Table 3-3, Table 3-6,) S The maximum number of bus attachments (nodes, OLMs, RS-485 repeaters,...) in one segment is restricted to 32.

  • Page 77

    Configuring Optical Networks Configuration Parameters for Optical Networks When configuring optical PROFIBUS networks, the following parameters must be taken into account: S Using fiber-optic cables, only point-to-point links can be established. S The maximum signal attenuation of the transmission path (the power budget) must be within the permitted values.

  • Page 78

    PROFIBUS, LEDs (LED = Light Emitting Diode) are used as E/O converters. The LEDs are specially adapted to the various transmission media. Transmission Media The transmission media used in SIMATIC NET PROFIBUS are as follows: S Plastic fiber-optic cables S PCF fiber-optic cables (polymer cladded fiber)

  • Page 79

    Receiver The receiver of a digital optical transmission system consists of an optoelectric converter (a photodiode), that converts the optical signals to electrical signals and a signal converter that converts the electrical pulses received from the diode into signals compatible with the connected electronics. Attenuation The attenuation of the transmission path is determined by the following factors: S The choice of optical fiber...

  • Page 80

    Configuring Networks 3.2.2 Optical Power Budget of a Fiber-Optic Transmission System Optical Power Budget The transmitted optical power P specified in dBm, the attenuation caused by connectors and the fiber is specified in dBm is a reference unit and describes the logarithmic ratio of the power level to the reference power P =1mW.

  • Page 81

    Power Budget The power budget of an optical link not only takes into account the attenuation in the fiber itself, temperature and aging effects but also the attenuation values of the connectors and splices and therefore provides exact information about whether or not an optical link can be implemented.

  • Page 82

    Configuring Networks Link Power Margin When calculating the power budget, a link power margin of at least 3 dB (at a wavelength of 860 nm) or at least 2 dB (at a wavelength of 1300 nm) must be maintained. If the link power margin calculated is lower, the transmission path will not be reliable in its currently planned form.

  • Page 83

    3.2.3 Cable Lengths for Plastic and PCF FO Paths The length of the transmission path on fiber-optic cables is not dependent on the transmission rate. Each node on the optical PROFIBUS network has repeater functionality so that the following distance information relates to the distance between two adjacent, interconnected PROFIBUS nodes.

  • Page 84

    Calculation Examples The following work sheets show typical calculations of the power budget for SIMATIC NET PROFIBUS glass optical fibers, one with OLM/G11, OLM/G12 at a wavelength of 860 nm and one with OLM/G11-1300 and OLM/G12-1300 at a wavelength of 1300 nm.

  • Page 85

    Power budget for OLM/G11, G12 for a point-to-point link with the wavelength = 860 nm Attenuation on the cable Fiber type Attenuation 62.5/125 3.5 dB/km Attenuation for connectors Number Conn 0.4 dB Attenuation caused by splices Number 0.2 dB Attenuation of the transmission path Characteristic data of the OLM/G11, G12 maximum power coupled into 62.5/125 m fiber out, min...

  • Page 86

    Configuring Networks Power Budget for OLM G11-1300, G12-1300 for One Point-to-Point Link at Wavelength = 1310 nm Attenuation on the cable Fiber type Attenuation Cable length 62.5/125 m 1.0 dB/km 9 km Attenuation for connectors Number Conn 1 dB Attenuation caused by splices Number 0.2 dB Attenuation of the transmission path...

  • Page 87

    Blank form for a power budget using OLMs Attenuation for the OLM/G11, G12, G11-1300 or G12-1300 for one point-to-point link with wavelength Attenuation on the cable Fiber type Attenuation ( m ) in dB/km Attenuation of connectors (dB) Number Conn Attenuation caused by splices (dB) Number...

  • Page 88: Transmission Delay Time

    Configuring Networks Transmission Delay Time The system reaction time of a PROFIBUS network depends largely on the following: S The type of system being used (single or multiple master system) S The maximum reaction time of the individual nodes S The amount of data to be transmitted S The bus configuration (topology, cable lengths, active network components) The bus parameters are adapted (configured) to the particular PROFIBUS network using configuration software such as COM PROFIBUS or STEP 7.

  • Page 89: Configuring Optical Buses And Star Topologies With Olms

    3.3.1 Configuring Optical Buses and Star Topologies with OLMs Creating a System Overview You configure the PROFIBUS network, for example with SIMATIC STEP 7. The bus-specific configuration begins with the creation of the system overview in the hardware configuration dialog “HW Config” of STEP 7 (V5.0). Figure 3-3 “HW Config”...

  • Page 90

    Configuring Networks Setting the PROFIBUS Properties In the “Properties – PROFIBUS” dialog, you can set the highest station address (HSA), the transmission rate and the bus profile. Figure 3-4 ”Properties – PROFIBUS” Dialog 3-24 PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 91

    Entering the Cabling Configuration You can make the settings for the cabling configuration (number of OLMs, cable length) in the “Cables” tab under “Options”. Figure 3-5 “Options” –> “Cables” Tab PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 3-25...

  • Page 92

    Configuring Networks Checking the Bus Parameters Based on the entries made, the configuration tool can check whether the slot time is feasible in the selected communication profile. If the system would exceed the value, due to the additional delays of OLM and FO cables, the parameters are adapted.

  • Page 93: Configuring Redundant Optical Rings With Olms

    3.3.2 Configuring Redundant Optical Rings with OLMs The following configuration conditions must be satisfied in redundant optical rings: 1. Configuration of a Non-Existent Node 2. Raising the retry value to at least the value 3 3. Checking and adaptation of the slot time To set the parameters under point 2.

  • Page 94

    Configuring Networks Checking and Adapting the Slot Time To allow a “bumpless” return from the optical bus to the optical ring after the fault has been eliminated, there must be no frame on the network at the switch-back time. The network is briefly free of frames when a master addresses a device whose address is configured but does not actually exist.

  • Page 95

    Table 3-9 Constants for Calculating the Slot Time with DP Standard (redundant optical ring) Transmission rate 12 Mbps 6 Mbps 3 Mbps 1.5 Mbps 500 Kbps 187.5 Kbps 93.75 Kbps 45.45 Kbps 19.2 Kbps 9.6 Kbps Table 3-10 Constants for Calculating the Slot Time with DP/FMS (”Universal”) and DP with S5–95U (redundant optical ring) Transmission...

  • Page 96: Example Of Configuring The Bus Parameters In Step 7

    Configuring Networks Note The slot time calculation takes into account only the optical network and the attachment of nodes to the OLM in each case via a maximum 20 m long RS-485 bus segment. Longer RS-485 bus segments must be included by adding them to the length With the OLM/G11-1300 and OLM/G12-1300, the minimum slot times shown in the following table must be maintained at transmission rates of 12 Mbps, 6 Mbps, 3...

  • Page 97

    Calculation of the Slot Time For the transmission rates of 1.5 Mbps selected in the example, Table 3-9 lists the following values a = 351 b = 30 c = 24 On this basis, the slot time is calculated as follows: Slot time = 351 + (30 x 20) + (24 x 20) = 1431 Entering the Bus Parameters This means that the following three bus parameters must be entered for the...

  • Page 98

    Configuring Networks Note Since the formula includes the delays of all fiber-optic and RS-485 cables, the “Consider Cable Configuration” check box must not be activated in the “Cables” tab on the “Options” dialog. Figure 3-7 “Bus Parameters/User-Defined” Dialog in STEP 7 (V5.0) 3-32 PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 99: Passive Components For Rs-485 Networks

    Passive Components for RS-485 Networks PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 100: Simatic Net Profibus Cables

    Passive Components for RS-485 Networks SIMATIC NET PROFIBUS Cables PROFIBUS Cables A variety of SIMATIC NET PROFIBUS cables are available allowing optimum adaptation to a variety of environments. All the information about segment lengths and transmission rates refer only to these cables and can only be guaranteed for these cables.

  • Page 101

    Table 4-1 LAN Cables for PROFIBUS (1) Technical Specifications FC Standard Cable Type Cable Order Number 6XV1 830 -0EH10 Attenuation < 42 dB/km < 22 dB/km 38.4 < 4 dB/km <2.5 dB/km Characteristic impedance at 9.6 kHz at 31.25 kHz at 38.4 kHz 18.5 at 3 to 20 MHz...

  • Page 102

    Passive Components for RS-485 Networks UV resistance UL listed Electrical characteristics at 20 C, tested in compliance with DIN 47250 Part 4 or DIN VDE 0472 Cables capable of trailing for the following requirements: - min. 4 million bending cycles at the specified bending radius and max. acceleration of 4 m/s Outer diameter >...

  • Page 103

    Table 4-2 LAN Cables for PROFIBUS (2) Technical Specifications FC Trailing Cable Type Cable Order Number 6XV1 830 -3EH10 Attenuation < 49 dB/km < 25 dB/km 38.4 < 4 dB/km < 3 dB/km Characteristic impedance at 9.6 kHz at 31.25 kHz at 38.4 kHz 18.5 at 3 to 20 MHz...

  • Page 104

    Passive Components for RS-485 Networks UL listed Electrical characteristics at 20 C, tested in compliance with DIN 47250 Part 4 or DIN VDE 0472 Cables capable of trailing for the following requirements: - min. 4 million bending cycles at the specified bending radius and max. acceleration of 4 m/s Outer diameter >...

  • Page 105: Fc Standard Cable

    FC Standard Cable 6XV1 830-0EH10 The LAN cable with the order number 6XV1 830-0EH10 is the FastConnect standard LAN cable for SIMATIC NET PROFIBUS networks. It meets the requirements of EN 50170, cable type A, with solid copper cores (22 gauge).

  • Page 106: Fc-frnc Cable (lan Cable With Halogen-free Outer Sheath)

    Passive Components for RS-485 Networks 4.1.2 FC-FRNC Cable (LAN cable with halogen-free outer sheath) Cores, solid copper Figure 4-2 Structure of the FRNC LAN Cable (Halogen-Free Outer Sheath) LAN Cable with Halogen-free Outer Sheath 6XV1 830-0LH10 The LAN cable with a halogen-free outer sheath 6XV1 830-0LH10 complies with the specification EN 50170, cable type A, with solid copper cores (22 gauge).

  • Page 107: Fc Food Cable

    4.1.3 FC Food Cable Cores, solid copper Cellular PE insulation Figure 4-3 Structure of the FC Food Cable FC Food Cable 6XV1 830-0GH10 The FC food cable 6XV1 830-0GH10 complies with the specification EN 50170, cable type A, with solid copper cores (22 gauge). The inner structure of the cable (cores, filler, shielding) is identical to that of the standard cable.

  • Page 108: Fc Robust Cable

    Passive Components for RS-485 Networks 4.1.4 FC Robust Cable Cores, solid copper Cellular PE insulation Figure 4-4 Structure of the FC Robust Cable FC Robust Cable 6XV1 830-0JH10 The FC robust cable 6XV1 830-0JH10 with its PUR sheath complies with the specification EN 50170, cable type A, with solid copper cores (22 gauge).

  • Page 109: Profibus Flexible Cable

    4.1.5 PROFIBUS Flexible Cable Filler (polyester yarn) Cores, stranded copper Cellular PE insulation Figure 4-5 Structure of the Flexible Cable (Robot Cable) PROFIBUS flexible cable 6XV1 830-0FH10 The flexible cable 6XV1 830-0FH10 complies with the specification EN 50170, Cable Type A, with stranded copper cores (approximately 24 gauge - 19/36) apart from the higher loop resistance.

  • Page 110

    Passive Components for RS-485 Networks Properties The characteristics of the flexible cable differ from those of the standard LAN cable as follows: S The sheath material is free of halogens (polyurethane, PUR) S Extremely good resistance to abrasion S Resistant to mineral oils and grease S Extremely good resistance to UV radiation S Small bending radii for installation and operation S Due to the smaller Cu cross-section, the d.c.

  • Page 111: Fc Underground Cable

    The cable has an additional PE outer sheath. The outer and inner sheath are bonded together so that the FC underground cable can be fitted with all SIMATIC NET PROFIBUS connectors after removing the outer sheath. After removing the outer sheath, the structure of the cable also allows use of the FastConnect (FC) stripping tool for fast stripping of the inner cable (see Section 4.2.3).

  • Page 112: Fc Trailing Cable

    Passive Components for RS-485 Networks Uses Due to its additional PE outer sheath, this cable is suitable for underground cabling (campus cabling). 4.1.7 FC Trailing Cable Filler Cores, stranded copper Cellular PE insulation Figure 4-7 Structure of the Trailing Cable Trailing Cable 6XV1 830-3EH10 The trailing cable 6XV1 830-3EH10 corresponds to the specification EN 50170 Cable Type A, with stranded copper cores (approximately 24 gauge - 19/36) with...

  • Page 113

    Properties The characteristics of the trailing cable differ from those of the standard LAN cable as follows: S Extremely good resistance to abrasion S Resistant to mineral oils and grease S Extremely good resistance to UV radiation S Small bending radii for installation and operation S Due to the smaller Cu cross-section, the d.c.

  • Page 114

    Passive Components for RS-485 Networks Figure 4-8 Example of Using the PROFIBUS Trailing Cable in a Drag Chain Segment Lengths Due to the increased loop resistance, somewhat shorter segment lengths are permitted at low transmission rates (see Table 3.1). At transmission rates Kbps, the trailing cable has the same values as the standard LAN cable.

  • Page 115

    Note If you connect to screw terminals, the stranded cores must be fitted with wire-end ferrules (0.25 mm complying with DIN 46228). Use only wire-end ferrules made of materials with permanently stable contact properties, for example copper with a tin-plated surface (not aluminum). The bus connector 6ES7 972-0BA30-0XA0 cannot be connected to the stranded cores.

  • Page 116: Profibus Festoon Cable

    The cable carries its own weight but is not suitable for tensile stress > 80 N. The outer sheath has the identification “SIMATIC NET PROFIBUS RS-485 Festoon Cable 6XV1830-3GH10 * (UL) CMX 75 C (SHIELDED) AWG 24” printed on it along with meter markings.

  • Page 117

    Properties The festoon cable has the following properties: S The outer sheath contains halogens (PVC) S Conditionally resistant to mineral oil and greases S Resistant to UV radiation S Small bending radii both during installation and operation S Due to the smaller Cu cross-section of the inner conductors, the d.c. loop resistance and the HF attenuation are somewhat higher which means reduced segment lengths.

  • Page 118

    Passive Components for RS-485 Networks Note If you connect to screw terminals, the stranded cores must be fitted with wire-end ferrules (0.25 mm complying with DIN 46228). Use only wire-end ferrules made of materials with permanently stable contact properties, for example copper with a tin-plated surface (not aluminum).

  • Page 119

    Installation Guidelines When it is installed, the cable must be unwound at a tangent from the drum and with no torsion (keep watching the line down the length of the cable) and installed in the cable carriage. The cable must be installed in a flat cable carriage on a round support to avoid kinking.

  • Page 120: Sienopyr-fr Marine Cable

    Passive Components for RS-485 Networks 4.1.9 SIENOPYR-FR Marine Cable Cores, stranded copper Dummy cores Outer sheath of halogen-free polymer Figure 4-12 Structure of the SIENOPYR-FR Marine Cable SIENOPYR-FR Marine Cable 6XV1830-0MH10 The SIENOPYR-FR marine cable meets the requirements of EN 50170, cable type A.

  • Page 121

    Uses The SIENOPYR-FR marine cable is intended for fixed installation on ships and offshore facilities in all rooms and on open decks. PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 4-23...

  • Page 122: Fastconnect Bus Connector, The Fastconnect System

    Note The integrated bus terminators and the mechanical specifications of the SIMATIC NET bus connectors are tailored to the SIMATIC NET PROFIBUS cables (cable type A of the PROFIBUS standard EN 50170-1-2). Fitting bus connectors to cables with different electrical or mechanical properties can cause problems during operation! 4.2.1...

  • Page 123: Area Of Application And Technical Specifications Of The Fastconnect Bus Connector

    Functions The FastConnect stripping system allows PROFIBUS connectors to be fitted to PROFIBUS LAN cables extremely quickly. The design of the FastConnect LAN cables allows the use of the FastConnect stripping tool with which the outer sheath and braid shield can be removed precisely in one step.

  • Page 124

    Passive Components for RS-485 Networks Table 4-3 Structure and Uses of the IP 20-compliant FastConnect Bus Connectors Order numbers: Appearance: Recommended for: IM 308-B IM 308-C S5-95U S7-200 S7-300 S7-400 M7-300 M7-400 C7-626 DP S5-115U to 155U CP 5412 / CP 5613 / CP 5614 CP 5411 CP 5511 CP 5611...

  • Page 125

    Technical Specifications The following table shows the technical specifications of the various bus connectors: Table 4-4 Technical Specifications of the IP 20-compliant Bus Connectors Order numbers: PG socket Max. transmission rate Cable outlet Terminating resistor Interfaces – to PROFIBUS node –...

  • Page 126

    Passive Components for RS-485 Networks Disconnect Function The disconnect function means that the remaining LAN cable is disconnected from the bus when the terminating resistor is activated. If the terminating resistor is accidentally activated in the middle of the LAN cable, the error can be recognized and localized immediately due to the nodes that are no longer accessible.

  • Page 127

    Figure 4-13 Fitting the LAN Cables in the FastConnect Bus Connector 6ES7972-0B.50-0XA0 Figure 4-14 Fitting the LAN Cables in the FastConnect Bus Connector 6G1500-0FC00 PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 4-29...

  • Page 128: Using The Fastconnect Stripping Tool For Preparing Fc Cables, Index

    Passive Components for RS-485 Networks 4.2.3 Using the FastConnect Stripping Tool for Preparing FC Cables The steps required to strip a cable are illustrated using the using the FastConnect bus connector with a 90 cable outlet 6ES7972-0BB50-0XA0. They apply analogously to the FastConnect bus connector with a 180 cable outlet 6GK1500-0FC00.

  • Page 129

    A1, B1 A2, B2 Incoming cable A1, B1 Outgoing cable A2, B2 Terminating resistor with disconnect function 1. Undo the screw of the strain relief. 4. Fit the incoming cable into the contact cover labeled A1, B1 (remember to keep the color coding consistent).

  • Page 130: Bus Connectors

    Note The integrated bus terminators and the mechanical specifications of the SIMATIC NET bus connectors are tailored to the SIMATIC NET PROFIBUS cables (cable type A of the PROFIBUS standard EN 50170-1-2). Fitting bus connectors to cables with different electrical or mechanical properties can cause problems during...

  • Page 131: Area Of Application And Technical Specifications Of The Bus Connector

    Use in PG with MPI interface Use in PG with CP5412(A2) CP 5411 CP 5511 CP 5611 CP 5613/14 PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 6ES7 972-0BA40-0XA0 6ES7 6ES7 972-0BB40-0XA0 0BA30-0XA0 35_ cable outlet 30_ cable outlet 6GK1 500-0EA02 SIEMENS 4-33...

  • Page 132

    Passive Components for RS-485 Networks Table 4-6 Design and Applications of the IP 20-compliant Bus Connectors, continued Order 6ES7 972-0BA11-0XA0 numbers: 6ES7 972-0BB11-0XA0 ET 200B ET 200L ET 200M ET 200S ET 200U 720/720C PG 730 PG 740 PG 750 PG 760 Repeater Use in...

  • Page 133

    Technical Specifications The following table shows the technical data of the various bus connectors: Table 4-7 Technical Specifications of the IP 20-compliant Bus Connectors Order numbers: 6ES7 972- ... 0BA11-0XA0 ... 0BB11-0XA0 PG socket 0BA11: no 0BB11: yes Max. transmission 12 Mbps rate Terminating resistor...

  • Page 134

    Passive Components for RS-485 Networks Disconnecting a Station The bus connector allows you to disconnect a node from the bus without interrupting the data traffic on the bus. Removing the bus connector when the terminating resistor is activated at the end of the cable causes disruptions on the bus and is not permitted.

  • Page 135: Attaching The Lan Cable To The Bus Connector

    PG socket (only with 6ES7 972-0BB11-0XA0) Switch for terminating resistor Figure 4-15 Bus Connector (order number 6ES7 972-0B.11 ...) PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 SIEMENS 9-pin sub-D male connector for connection to the station Cable guides for PROFIBUS LAN cable...

  • Page 136

    Passive Components for RS-485 Networks Connecting Up the LAN Cable Connect up the LAN cable to the bus connector with order number 6ES7 972-0B.11 ... as follows: 1. Strip the LAN cable as shown in Figure 4-16 using the FastConnect stripping tool (sizes and lengths are shown in the table on the rear of the tool).

  • Page 137

    Note Stranded cores must only be used in screw terminals with wire-end ferrules fitted (0.25 mm complying with DIN 46228). Use only wire-end ferrules made of materials with permanently stable contact properties, for example copper with a tin-plated surface (not aluminum). PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 4-39...

  • Page 138: Connecting The Lan Cable To Bus Connector (6es7 972-0ba30-0xa0)

    Passive Components for RS-485 Networks 4.4.2 Connecting the LAN Cable to Bus Connector (6ES7 972-0BA30-0XA0) Appearance (6ES7 972-0BA30 Figure 4-18 shows the bus connector with order number 6ES7 972-0BA30-0XA0: Screws for mounting on the station Figure 4-18 Bus Connector (order number 6ES7 972-0BA30 Connecting Up the LAN Cable Connect up the LAN cable to the bus connector with order number 6ES7 972-0BA30-0XA0 as follows:...

  • Page 139

    4. Place the green and red cores in the cable guides above the insulation displacement terminals as shown in Figure 4-20. Make sure that you always connect the same cores to the same terminal A or B (for example terminal A is always connected to green and terminal B always to red).

  • Page 140: Connecting The Lan Cable To Bus Connector (6es7 972-0b.40)

    Passive Components for RS-485 Networks 4.4.3 Connecting the LAN Cable to Bus Connector (6ES7 972-0B.40) Appearance (6ES7 972-0B.40 ...) Figure 4-21 shows the bus connector with order number 6ES7 972-0B.40 ... Screws for mounting on the station PG socket (only with 6ES7 972-0BB40-0XA0) Figure 4-21...

  • Page 141

    5. Screw the green and red cores tight in the screw terminal. LAN cable attachment for first and last station on the Switch = “ON” (terminating resistor activated) Switch = “OFF” (terminating resistor deactivated) : The LAN cable must always be connected up on the left-hand side. Figure 4-23 Connecting the LAN Cable to Bus Connector (6ES7 972-0B.40 ...) 6.

  • Page 142: Installing The Bus Connector With Axial Cable Outlet

    Passive Components for RS-485 Networks Installing the Bus Connector with Axial Cable Outlet Appearance (6GK1500-0EA02) A1B1A2B2 LAN Cable Connection and Switch Setting for First and Last Station on the Bus A1B1A2B2 LAN Cable Connection and Switch Setting for all Other Stations on the Bus Figure 4-24 Installing the Bus Connector with Axial Cable Outlet 4-44...

  • Page 143

    Fitting the Bus Connector Points to note about installing the bus connector with axial cable outlet (order number 6GK1 500-0EA02): S Strip both cable ends as shown in Figure 4-25 with the FastConnect stripping tool (sizes and lengths are shown in the table on the rear of the tool). approx.

  • Page 144: Plugging The Bus Connector Into The Module

    Passive Components for RS-485 Networks Plugging the Bus Connector into the Module Fitting the Bus Connector To fit the bus connector, follow the steps outlined below: 1. Plug the bus connector into the module. 2. Screw the bus connector to the module. 3.

  • Page 145

    Warning Possible disturbance of data traffic on the bus A bus segment must always be terminated at both ends with the terminating resistor. This is, for example, not the case when the power supply to the last node with a bus connector is turned off. Since the bus connector is supplied with power from the station, the terminating resistor has no effect.

  • Page 146: Bus Terminals For Rs-485 Networks, Versions

    Passive Components for RS-485 Networks Bus Terminals for RS-485 Networks 4.7.1 Versions Overview A bus terminal is used to attach a single PROFIBUS node with an RS-485 interface to the PROFIBUS LAN cable. Bus terminals are available in the following versions: Table 4-9 Versions of the Bus Terminal Order no.:...

  • Page 147: Design And Functions Of The Rs-485 Bus Terminal

    4.7.2 Design and Functions of the RS-485 Bus Terminal Figure 4-27 RS-485 Bus Terminal Bus Terminal RS-485 The RS-485 bus terminal is used to connect data terminal equipment (DTEs) with an RS-485 interface to the LAN cable. It includes the following: S 6 modular terminals for conductors with a cross-sectional area connection of the incoming and outgoing LAN cable and, if necessary, the protective earth (PE)

  • Page 148

    Passive Components for RS-485 Networks Table 4-10 Pinout of the Sub D Connector Signal Meaning Protective earth Not used B (RXD/TXD-P) Data line B (receive/transmit data P) Not used M5V2 (DGND) Data ground P5V2 (VP) + 5V voltage plus Not used A (RXD/TXD-N) Data line A (receive/transmit data N) Not used...

  • Page 149

    PG connecting cable. The pinout is identical to that shown in Table 4-10. Figure 4-28 RS-485 Bus Terminal with Additional PG Interface Note The SIMATIC NET PROFIBUS RS-485 bus terminals are only suitable for transmission rates terminal. PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 1.5 Mbps.

  • Page 150: Design And Functions Of The 12m Bus Terminal

    Passive Components for RS-485 Networks 4.7.3 Design and Functions of the 12M Bus Terminal Figure 4-29 12M Bus Terminal (BT12M) 4-52 PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 151

    Bus terminal 12 M The 12M bus terminal is used to connect data terminal equipment (DTEs) with an RS-485 interface to the LAN cable. It includes the following: S 1 modular terminal block with 6 terminals for conductors with a cross-sectional area <= 1.5 mm necessary, the protective earth (PE) S Screw down clamps for field contact...

  • Page 152

    Passive Components for RS-485 Networks Termination The termination must be activated on the first and last node on the bus segment. If termination is activated (termination on), the connection between the incoming (A1, B1) and outgoing (A2, B20 segment is interrupted. The advantage of this is that if a bus terminating resistor is activated incorrectly, the stations after the bus terminal can no longer be accessed.

  • Page 153: Mounting/attaching The Lan Cables

    4.7.4 Mounting/Attaching the LAN Cables The bus terminal can be mounted in three different ways: S By snapping it on to a 15 x 35 mm standard DIN rail (DIN EN50022-35x15) S By screwing the unit to a mounting plate using two fillister head screws. Figure 4-31 shows the drilling diagram for mounting the unit.

  • Page 154

    Passive Components for RS-485 Networks Note Please make sure that the bus terminal is accessible for maintenance and installation work even during operation. To connect the LAN cable, follow the steps below (see Figure 4-32): 1. Open the LAN cable at the point at which the bus terminal will be inserted. 2.

  • Page 155

    Note The shield clamps are used solely to contact the shields and are not suitable as strain-relief clamps. This means that the LAN cables must be secured as close as possible to the bus terminals to provide mechanical strain relief. Note Bus terminals installed at the end of segments require the 5 V power supply from the DTE interface to supply the activated, integrated terminating resistor.

  • Page 156: Grounding

    Passive Components for RS-485 Networks 4.7.5 Grounding If the bus terminal is mounted on a DIN rail (see Figure 4-33), the shield clamp makes large-area contact with the rail via an internal spring. To connect the cable shield with local ground, a connection between the DIN rail over as short a distance as possible to local earth is adequate.

  • Page 157

    Note The DIN rail must have a good conducting surface (for example tin plated). Wall Mounting Note If the bus terminal is mounted on a wall, at least one PE terminal must be connected to local ground. This connection should be over the shortest possible distance.

  • Page 158: Technical Data Of The Rs-485 Bus Terminal

    Passive Components for RS-485 Networks 4.7.6 Technical Data of the RS-485 Bus Terminal Technical Data of the RS-485 Bus Terminal Connector to DTE Transmission rate PG interface (optional) Power supply range Current consumption: Environmental conditions: Operating temperature Storage/transport temperature Relative humidity Construction Dimensions (W x H x D) in mm Weight...

  • Page 159: Technical Data Of The 12m Bus Terminal

    4.7.7 Technical Data of the 12M Bus Terminal Technical Data of the 12M Bus Terminal Connector to DTE Transmission rate Power supply Current consumption Total power dissipation Value factor Electromagnetic Compatibility Noise emission limit class Noise immunity on signal lines Noise immunity to static electricity discharge Noise immunity to high-frequency interference Climatic Conditions...

  • Page 160

    Passive Components for RS-485 Networks Mechanical Conditions Oscillation operation Shock operation Construction Dimensions (W x H x D) in mm Tap line length Weight (incl. 1.5 m connecting cable) Degree of protection Test Marks 4-62 Tested to DIN IEC 68-2-6 10 to 58 Hz;...

  • Page 161: Cable Connections, Cable Connections To Network Components, Cable Connection Without Bus Connection Elements

    Cable Connections 4.8.1 Cable Connections to Network Components Sometimes, a connection between two different LAN cable sections is necessary, for example, a transition from the standard LAN cable to a section with trailing cable. The easiest way to implement this transition is to use the two LAN cable attachments of a bus connector, bus terminal or repeater.

  • Page 162

    Passive Components for RS-485 Networks Keep to the permitted ambient conditions Remember that a standard connecting cable cannot stand up to the same environmental conditions as an uninterrupted LAN cable. If necessary, provide extra protection for the connection to avoid dampness, dust or aggressive gases causing problems by covering the connection in a cable sleeve.

  • Page 163: Preassembled Connecting Cables, T Connecting Cable

    Preassembled Connecting Cables 4.9.1 830-1T Connecting Cable Uses The 830-IT connecting cable is a preassembled cable for fast and cost-effective attachment of DTEs to OLMs and OBTs. Design The 830-1T connecting cable consists of a twisted pair (stranded copper cores) with a braid shield.

  • Page 164

    Passive Components for RS-485 Networks Note Due to the integrated terminating resistors, the 830-1T connecting cable must not be used as a tap line (for example for attaching a PG) to a PROFIBUS segment. Table 4-11 Ordering Data for SIMATIC NET 830-1T Connecting Cable Ordering Data: SIMATIC NET 830-1T connecting cable for PROFIBUS for connecting DTEs to OLMs and...

  • Page 165: Connecting Cable

    4.9.2 830-2 Connecting Cable Uses The 830-2 connecting cable is a preassembled cable for fast and cost-effective attachment of PROFIBUS nodes (for example HMI) to programmable controllers for transmission rates up to 12 Mbps. Design The 830-2 connecting cable consists of the PROFIBUS standard cable. It has a 9-pin sub-D male connector with a straight cable outlet at one end and a 9-pin sub-D male connector with a 90 cable outlet at the other.

  • Page 166

    Passive Components for RS-485 Networks Table 4-12 Ordering Data for SIMATIC NET 830-2 Connecting Cable Ordering Data: SIMATIC NET 830-2 connecting cable for PROFIBUS for connecting DTEs to OLMs and OBTs, preassembled with two sub-D male connectors, 9-pin, terminating resistors can be activated. 10 m 4-68 6XV1830-2AH30...

  • Page 167: Active Components For Rs-485 Networks

    Active Components for RS-485 Networks PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 168: Rs-485 Repeater

    Active Components for RS-485 Networks RS-485 Repeater What is an RS-485 Repeater? An RS-485 repeater amplifies data signals on bus cables and links bus segments. Using the RS-485 Repeater (6ES7 972-0AA01-0XA0) You require an RS-485 repeater in the following situations: S When there are more than 32 stations (including repeaters) connected to the S When electrically isolated bus segments are required or S When the maximum cable length of a segment is exceeded (see Chapter 3...

  • Page 169

    Á Â Â A1 B1 A1 B1 A1 B1 A1 B1 Ã Ä È Å SIEMENS SIEMENS RS 485-REPEATER A2 B2 A2 Æ Á Á Ç If the terminating resistor is activated, the right-hand bus attachment is disconnected (see Figure 5-3) ! Note Terminal M5.2 of the power supply (see Table 5-1, no.

  • Page 170

    Active Components for RS-485 Networks Technical Specifications Table 5-2 lists the technical data of the RS-485 repeater: Table 5-2 Technical Data of the RS-485 Repeater Technical Specifications Power supply Rated voltage Ripple (static limit) Power consumption at rated voltage Without load on the PG/OP connector Load on the PG/OP connector (5 V/90 mA) Load on the PG/OP connector (24 V/100 mA) Electrical isolation...

  • Page 171

    Block Diagram Figure 5-1 shows the block diagram of the RS-485 repeater: S Bus segment 1 and bus segment 2 are electrically isolated. S Bus segment 2 and the PG/OP connector are electrically isolated. S Signals are amplified: – between bus segment 1 and bus segment 2 –...

  • Page 172: Possible Configurations With The Rs-485 Repeater

    Active Components for RS-485 Networks Possible Configurations with the RS-485 Repeater Overview The following section explains the configurations in which you can use the RS-485 repeater: S Segment 1 and Segment 2 terminated on the RS-485 repeater (see Figure 5-3) S Segment 1 terminated on the RS-485 repeater and segment 2 connected through on the RS-485 repeater (see Figure 5-4 ) S Segment 1 and Segment 2 connected through on the RS-485 repeater (see...

  • Page 173

    Segments 1 and 2 Terminated Figure 5-3 shows how to connect the RS-485 repeater to the ends between two segments: Segment 1 Segment 2 Figure 5-3 Connecting Two Bus Segments to the RS-485 Repeater Segment 1 Terminated, Segment 2 Connected Through Figure 5-4 shows the connection between two segments via an RS-485 repeater with one segment connected through: Segment 1...

  • Page 174

    Active Components for RS-485 Networks Segments 1 and 2 Connected Through Figure 5-5 shows the connection between two segments via an RS-485 repeater with each LAN cable connected through: Segment 1 Segment 2 Figure 5-5 Connecting Two Bus Segments to the RS-485 Repeater Note If you turn off the power supply of a complete segment, the terminating resistors of the connected nodes are also without power supply.

  • Page 175: Installing And Uninstalling The Rs-485 Repeater

    Installing and Uninstalling the RS-485 Repeater Overview You can install the RS-485 repeater as follows: S On an S7-300 rail S On a standard rail (order number 6ES5 710-8MA..) PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 176

    Active Components for RS-485 Networks Installation on an S7-300 Rail To install the RS-485 repeater on an S7-300 rail, the catch on the rear of the RS-485 repeater must first be removed (see Figure 5-6): 1. Insert a screwdriver below the tongue of the catch (1) and 2.

  • Page 177

    Removing the Repeater from an S7-300 Rail To remove the RS-485 repeater from the S7-300 rail: 1. Undo the screw securing the RS-485 repeater (1) and 2. Pull the RS-485 repeater out and up (2). Figure 5-7 Removing the RS-485 Repeater from the S7-300 Rail Installation on a Standard Rail To be able to install the repeater on a standard rail, the catch must be present on the back of the RS-485 repeater:...

  • Page 178: Ungrounded Operation Of The Rs-485 Repeater

    Active Components for RS-485 Networks Ungrounded Operation of the RS-485 Repeater Ungrounded Operation Ungrounded operation means that chassis and PE are not connected. The ungrounded operation of the RS-485 repeater allows you to operate electrically isolated bus segments. Figure 5-8 shows the change in the potentials resulting from using the RS 485 repeater.

  • Page 179: Connecting The Power Supply

    Connecting the Power Supply Cable Type To connect the 24 V power supply, use flexible cables with a cross section of 0.25 to 2.5 mm (AWG 26 to 14). Connecting the Power Supply To connect the power supply of the RS-485 repeater: 1.

  • Page 180: Connecting The Lan Cable

    Active Components for RS-485 Networks Connecting the LAN Cable All the LAN cables described in Chapter 4 are suitable for attachment to the RS-485 repeater. Connecting the PROFIBUS Cable Connect the PROFIBUS LAN cable to the RS-485 repeater, as follows: 1.

  • Page 181: Profibus Terminator

    6ES7 972-0DA00-0AA0 Design of the PROFIBUS Terminator Table 5-4 shows the design of the PROFIBUS terminator: Table 5-4 Design of the PROFIBUS Terminator Design of the PROFIBUS Terminator SIEMENS PROFIBUS TERMINATOR 24 V L+ M PE A1 B1 6ES7 972-0DA00-0AA0...

  • Page 182

    – 40 C to +70 C Screw mechanism; 0.25 mm 0.14 mm 0.14 mm Screw mechanism; all SIMATIC NET PROFIBUS cables D (in mm) 95 g PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 to 1.5 mm to 2.5 mm...

  • Page 183

    Connecting the PROFIBUS Cable Connect the PROFIBUS LAN cable to the PROFIBUS terminator, as follows: 1. Cut the PROFIBUS cable to the required length. 2. Strip the insulation from the PROFIBUS cable as shown in Figure 5-10. The braid shield must be folded back on to the cable. Only then can the shield clamp serve as strain relief and as the shield contact.

  • Page 184

    Active Components for RS-485 Networks PROFIBUS Networks SIMATIC NET 5-18 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 185: Passive Components For Profibus-pa

    Passive Components for PROFIBUS-PA PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 186: Fc Process Cable

    Passive Components for PROFIBUS-PA FC Process Cable Cores, solid copper Cellular PE insulation Figure 6-1 Cross-Section of the FC LAN Cable for PROFIBUS-PA FC LAN Cables for PROFIBUS-PA 6XV1 830–5EH10 and 6XV1 830–5FH10 The LAN cables 6XV1 830–5EH10 (blue sheath) and 6XV1 830–5FH10 (black sheath) are standard cables for PROFIBUS-PA networks.

  • Page 187: Splitconnect Tap

    SpliTConnect Tap Uses The SpliTConnect tap allows a PROFIBUS-PA bus segment complying with IEC 61158-2 to be implemented with DTE attachment points. Using the SpliTConnect coupler, it is possible to cascade SpliTConnect Taps to create a PROFIBUS-PA distributor. By replacing the contact screw with the SpliTConnect terminator, the SpliTConnect tap can be used as a bus terminating resistor.

  • Page 188

    Passive Components for PROFIBUS-PA How the SpliTConnect Tap Works The SpliTConnect Tap is used to install a PROFIBUS-PA bus segment complying with IEC 61158-2 /5/ with DTE attachment points. The FastConnect attachment system (FastConnect stripping tool, FastConnect LAN cable for IEC 61158-2) allows straightforward assembly of cables.

  • Page 189

    Produktinformation Product Information Stand / / 10.99 Dated Montageanleitung für SIMATIC NET PROFIBUS SpliTConnect System Mounting Instructions for SIMATIC NET PROFIBUS SpliTConnect System © SIEMENS AG 1999 Änderungen vorbehalten 039 242-001-03-1099 Subject to change Printed in Federal Republic of Germany...

  • Page 190

    Montageanleitung für SIMATIC NET PROFIBUS SpliTConnect System Mounting Instruction for SIMATIC NET PROFIBUS SpliTConnect System Wir haben den Inhalt der Druckschrift auf Übereinstimmung mit dem beschriebenen SpliTConnect System geprüft. Dennoch können Abweichungen nicht ausgeschlossen werden, so daß wir für die vollständige Übereinstimmung keine Gewähr über- nehmen.

  • Page 191

    Montageanleitung für SIMATIC NET PROFIBUS SpliTConnect System Mounting Instruction for SIMATIC NET PROFIBUS SpliTConnect System Montage / Mounting 1. Kontaktierelement (2) losschrauben und von SpliTConnect Tap (1) abziehen. Screw off contacting element (2) and remove it from the SpliTConnect Tap (1).

  • Page 192

    Montageanleitung für SIMATIC NET PROFIBUS SpliTConnect System Mounting Instruction for SIMATIC NET PROFIBUS SpliTConnect System Montage / Mounting 6. Mutter (3) bis zum Anschlag anziehen. Tighten nut (3) as much as possible. 8. Kontaktierelement (2) in SpliTConnect Tap (1) ein- führen;...

  • Page 193

    Montageanleitung für SIMATIC NET PROFIBUS SpliTConnect System Mounting Instruction for SIMATIC NET PROFIBUS SpliTConnect System Montage nicht benutzter Ausgänge / Mounting of not used ports Ein nicht benutzter Ausgang wird mit Mutter (3), Dichtung (4), Dichtscheibe (7), Schirmkontaktier- element (5) und Litzenhalter (6) abgeschlossen (Reihenfolge beachten).

  • Page 194

    Montageanleitung für SIMATIC NET PROFIBUS SpliTConnect System Mounting Instruction for SIMATIC NET PROFIBUS SpliTConnect System Zubehör (nicht im Lieferumfang enthalten) / Accessoires (not included in scope of delivery) Typ / Type SpliTConnect Coupler Montage / Mounting 1. SpliTConnect Coupler (8) auf einen freien Leitungs- abgang eines SpliTConnect Tap (1) aufschrauben.

  • Page 195

    Montageanleitung für SIMATIC NET PROFIBUS SpliTConnect System Mounting Instruction for SIMATIC NET PROFIBUS SpliTConnect System Typ / Type SpliTConnect Terminator SpliTConnect Terminator Ex Montage / Mounting SpliTConnect Terminator (Ex) (10) in SpliTConnect Tap (1) einführen. Ausrichtung ist durch Nut (N) und Führung im SpliTConnect Terminator (Ex) (10) vorge-...

  • Page 196

    Montageanleitung für SIMATIC NET PROFIBUS SpliTConnect System Mounting Instruction for SIMATIC NET PROFIBUS SpliTConnect System Technische Daten /Technical Data Elektrische Daten / Electrical data Schutzart / Protection class Kontaktierhäufigkeit / Contacting amount 1) nur wenn alle Abgänge ordnungsgemäß bestückt sind only if all user ports are mounted correctly 2) wenn erneut kontakiert wird, muß...

  • Page 197: Passive Components For Electrical Networks

    Passive Components for Electrical Networks PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 198: Fiber-optic Cables

    Passive Components for Electrical Networks Fiber-Optic Cables Fiber-Optic Cable (FO) On fiber-optic cables (FO) data is transmitted by modulating electromagnetic waves in the range of visible and invisible light. The materials used are high-quality plastic and glass fibers. This chapter describes only the fiber-optic cables from the SIMATIC NET range intended for PROFIBUS.

  • Page 199: Plastic Fiber-optic Cables

    FO cables (OLM/P), optical bus terminals (OBT) and devices with an integrated optical interface. Under certain circumstances, this is a cost-effective alternative to traditional glass fiber-optic cables. Properties of Fiber-Optic Cables Use the Siemens plastic and PCF FO cables with the following properties: Table 7-1 Properties of Fiber-Optic Cables Meaning...

  • Page 200

    Mineral oil ASTM no. 2, greases or water UV radiation not UV resistant Behavior in fire Outer dimensions Weight For special applications, contact your Siemens representative. SIMATIC NET PROFIBUS Plastic Fiber Optic, Duplex Cord Standard Cable v 230 dB/km 660 nm –...

  • Page 201: Plastic Fiber Optic, Duplex Cord

    7.2.1 Plastic Fiber Optic, Duplex Cord Figure 7-1 Structure of the Plastic FO Cable, Duplex Cord 6XV1821–2AN50 Plastic FO Cable, Duplex Cord 6XV1821–2AN50 The plastic FO cable, duplex cord 6XV1821–2AN50 is a flat, double-fiber cable with PVC inner jacket without an outer jacket. The jacket color is gray and no labeling is printed on it.

  • Page 202

    Table 7-2 Order Numbers of the Plastic FO Cable, Duplex Cord 6XV1821-2AN50 Fiber-Optic Cables SIMATIC NET PROFIBUS Plastic Fiber Optic, Duplex Cord I–VY2P 980/1000 150A Plastic FO cable with two fibers, PCV jacket, without connector, for use in areas where it is not subjected to mechanical load (for...

  • Page 203: Plastic Fiber-optic, Standard Cables

    Kevlar strain relief elements and a lilac PVC outer jacket. The standard code is I-VY4Y2P 980/1000 160A. The outer jacket has the identifier “SIEMENS SIMATIC NET PLASTIC FIBER OPTIC 6XV1821-0AH10 (UL)” printed on it as well as meter markers.

  • Page 204

    Order Numbers of the Plastic Fiber-Optic Standard Cable Ordering data: Plastic fiber-optic, standard cable, can be ordered in meters for OLMs, OBTs and integrated optical interfaces. SIMATIC NET PROFIBUS plastic fiber-optic, standard cable I-VY4Y2P 980/1000 160A Robust round cable with two plastic FO fibers, PVC outer...

  • Page 205

    Ordering data: Preassembled plastic fiber-optic cable, standard cable, for OLM/P SIMATIC NET PROFIBUS plastic fiber-optic, standard cable I-VY4Y2P 980/1000 160A Robust round cable with two plastic FO cords, PVC outer jacket and PA inner jacket, for use indoors, preassembled with 2 x 2 BFOC connectors, outer jacket stripped over 20 cm, for connection to OLM/P.

  • Page 206: Pcf Fiber-optic Cables

    Kevlar strain relief elements and a violet PVC outer jacket. The standard code is I-VY2K 200/230 10A17+8B20. The outer jacket has the identifier “SIEMENS SIMATIC NET PROFIBUS PCF FIBER OPTIC 6XV1821-1AH10 (UL)” printed on it as well as meter markers.

  • Page 207

    400 m (OLM) or 300 m (integrated optical interfaces, OBT) in each case between two nodes. Ordering data: Preassembled PCF fiber-optic cables for OLM/P SIMATIC NET PROFIBUS PCF fiber-optic cable I-VY2K 200/230 10A17 + 8B20 PCF FO cable with 2 cords, PVC outer jacket, for spanning...

  • Page 208

    Passive Components for Electrical Networks Ordering data: Preassembled PCF fiber-optic cables for integrated optical interfaces SIMATIC NET PROFIBUS PCF fiber-optic cable I-VY2K 200/230 10A17 + 8B20 PCF FO cable with 2 cords, PVC outer jacket, for spanning distances up to 300 m, preassembled with 2 x 2 simplex...

  • Page 209: Glass Fiber-optic Cables

    Glass Fiber-Optic Cables Designed for Industry SIMATIC NET glass fiber-optic cables (FO) are available in various designs allowing optimum adaptation to a wide range of applications. Uses Fiber-optic standard cable S Universal cable for use indoors and outdoors INDOOR fiber-optic cable S Free of halogens, can be walked on, and extremely flame-retardant FO cable for use in buildings Flexible fiber-optic trailing cable...

  • Page 210

    Passive Components for Electrical Networks Technical Specifications Tables 7-4 and 7-5 provide an overview of the technical specifications of all SIMATIC NET glass fiber-optic cables. Table 7-4 Technical Specifications of the INDOOR Fiber-Optic Cable and Fiber-Optic Standard Cable Cable Type Areas of application Universal cable for use indoors and outdoors...

  • Page 211

    Table 7-4 Technical Specifications of the INDOOR Fiber-Optic Cable and Fiber-Optic Standard Cable Cable Type Impact strength Installation temperature Operating temperature Storage temperature Behavior in fire Free of halogens UL approval Ship building approval Table 7-5 Technical Specifications of the Flexible Fiber-Optic Trailing Cable and the SIENOPYR Duplex Fiber-Optic Marine Cable Cable Type Areas of application...

  • Page 212

    Passive Components for Electrical Networks Table 7-5 Technical Specifications of the Flexible Fiber-Optic Trailing Cable and the SIENOPYR Duplex Fiber-Optic Marine Cable Cable Type Strain relief GFK central element, Aramid yarn Outer jacket/color of cable PUR, black Dimensions Basic element (3.5 Outer dimensions approx.

  • Page 213: Fiber-optic Standard Cable

    The fiber-optic standard cable contains two multimode graded fibers of type 62.5/125 m. The outer jacket is labeled “SIEMENS SIMATIC NET FIBER-OPTIC 6XV1 820-5AH10” approximately every 50 cm. Meter markers consisting of a vertical line and a 4-figure number make it easier to estimate the length of an installed cable.

  • Page 214: Indoor Fiber-optic Cable

    INDOOR Fiber-Optic Cable 6XV1820-7**** The INDOOR fiber-optic cable contains two multimode graded fibers 62.5/125 m. The outer jacket is labeled “SIEMENS SIMATIC NET INDOOR FIBER OPTIC 6XV1 820-7AH10 FRNC” at intervals of approximately 50 cm. Meter markers consisting of a vertical line and a 4-figure number make it easier to estimate the length of an installed cable.

  • Page 215: Flexible Fiber-optic Trailing Cable

    The flexible fiber-optic trailing cable contains two multimode graded fibers 62.5/125 m. Integrated dummy elements produce a round cross-section. The outer jacket is labeled “SIEMENS SIMATIC NET FLEXIBLE FIBER OPTIC 6XV1 820-6AH10” at intervals of approximately 50 cm. Meter markers consisting of a vertical line and a 4-figure number make it easier to estimate the length of an installed cable.

  • Page 216

    Passive Components for Electrical Networks Uses The flexible fiber-optic trailing cable was developed for applications in which the cable must be flexible enough to move, for example when attached to moving machine parts (drag chains). The cable is designed for 100,000 bending cycles through 90 (at the specified minimum bending radius).

  • Page 217

    Warning During installation and operation, all the mechanical restrictions involving the cable such as bending radii, tensile load etc. must be adhered to. If these limits are exceeded, permanent deterioration of the transmission characteristics may result that can cause temporary or permanent failure of data transmission. Figure 7-7 Example of Using the Glass Fiber-Optic Trailing Cable in a Drag Chain PROFIBUS Networks SIMATIC NET...

  • Page 218: Sienopyr Duplex Fiber-optic Marine Cable

    Passive Components for Electrical Networks 7.3.4 SIENOPYR Duplex Fiber-Optic Marine Cable Structure of the SIENOPYR Duplex Fiber-Optic Marine Cable Figure 7-8 SIENOPYR Duplex Fiber-Optic Marine Cable 6XV1 830–0NH10 The SIENOPYR duplex fiber-optic marine cable contains two multimode graded fibers 62.5/125 m. The cable also contains two stranded, rubber-insulated copper wires with a 1 mm cross-sectional area.

  • Page 219

    Uses The SIENOPYR duplex marine fiber-optic able is intended for fixed installation on ships and offshore facilities in all enclosed spaces and on open decks. It is suitable for connecting optical ports operating at the wavelengths of 850 nm and 1300 nm. Ordering Appendix I-2 lists an address from which this cable can be ordered.

  • Page 220: Special Cables

    Passive Components for Electrical Networks 7.3.5 Special Cables Special Cables In addition to the SIMATIC NET standard fiber-optic cables described in the Catalog IK 10, numerous special cables and accessories are also available. Listing all the versions available is beyond the scope of the catalog and of this manual. The technical specifications of the SIMATIC NET bus components indicate which SIMATIC NET fiber-optic cable is the normal connecting cable and which other fiber types are suitable.

  • Page 221

    Ordering If you require fiber-optic cables for particular applications, please contact your Siemens representative (see Appendix I-2). PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 7-25...

  • Page 222: Fiber-optic Connectors, Connectors For Plastic Fiber-optic Cables

    Definition Simplex connectors are used to attach the fiber-optic cable to the integrated fiber-optic interface of the PROFIBUS device. With certain Siemens modules (for example IM 153-2 FO, IM 467 FO) two simplex connectors (one for the transmitter and one for the receiver) are plugged on to the module using a special adapter.

  • Page 223

    The simplex connector and adapter can be ordered as follows: Table 7-6 Order Numbers - Simplex Connector and Adapter SIMATIC NET PROFIBUS plastic fiber-optic cable, simplex connector/polishing kit 100 simplex connectors and 5 polishing kits for assembling SIMATIC NET PROFIBUS plastic fiber-optic...

  • Page 224

    Passive Components for Electrical Networks Cable Lengths The length of the transmission path on fiber-optic cables is not dependent on the transmission rate. Each node on the optical PROFIBUS network has repeater functionality so that the following distance information relates to the distance between two adjacent, interconnected PROFIBUS nodes in a bus topology.

  • Page 225

    Select SEARCH on this Internet page, enter the number “574203” as the “Entry ID” and start the search. S As a leaflet supplied with the simplex connector/polishing kit (see Table 7-6) Title: Installation Instructions for SIMATIC NET PROFIBUS Plastic Fiber-Optic Cables with Simplex Connectors PROFIBUS Networks SIMATIC NET...

  • Page 226: Bfoc Connectors For Olms, Connectors For Glass Fiber Cables

    Passive Components for Electrical Networks 7.4.3 BFOC Connectors for OLMs The BFOC connectors allow precision fiber-optic cable connections. The construction of the BFOC connector allows the strain relief of cables to be used. This is necessary for installing longer fiber-optic cable connections, for example between OLM/P modules.

  • Page 227

    Fitting Connectors On-Site If it is necessary to fit connectors on-site, – SIEMENS provides this service (see Appendix I-2) – BFOC connectors and special tools can be ordered (see I-2). Note Connectors for glass fiber-optic cables should only be fitted by trained staff. When fitted correctly, they allow extremely low coupling attenuation and the value can be repeated after inserting the connector several times.

  • Page 228

    Passive Components for Electrical Networks PROFIBUS Networks SIMATIC NET 7-32 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 229: Active Components For Optical Networks

    Active Components for Optical Networks PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 230: Optical Bus Terminal Obt

    Active Components for Optical Networks Optical Bus Terminal OBT Figure 8-1 Optical Bus Terminal Uses The OBT (Optical Bus Terminal) is used to attach a single PROFIBUS node without an integrated optical interface or a PROFIBUS RS-485 segment with up to 31 nodes to the optical PROFIBUS.

  • Page 231

    Functions S Attachment of a PROFIBUS RS-485 segment S Provides an electrical attachment to the optical PROFIBUS (for example a PG attachment for commissioning and diagnostics) S Supports all PROFIBUS transmission rates from 9.6 kbps to 1.5 Mbps and 12 Mbps S The OBT regenerates the signals in amplitude and time.

  • Page 232: Optical Link Module Olm

    Active Components for Optical Networks Optical Link Module OLM Figure 8-2 Optical Link Module (OLM) Uses With the PROFIBUS OLM (Optical Link Module), Version 3, PROFIBUS networks can be implemented as bus, star and redundant ring structures. The transmission rate of a fiber-optic path is not dependent on the distance and can range from 9.6 Kbps to 12 Mbps.

  • Page 233

    Design OLMs are available with one or two fiber-optic interfaces for different types of fiber-optic cable: S Plastic fiber-optic cable (980/1000 m) can be used for distances of up to 80 m. They can be fitted with BFOC connectors on site. S PCF fiber-optic cables (200/230 m) can be used for distances up to 400 m.

  • Page 234

    Active Components for Optical Networks Functions S Automatic detection of all PROFIBUS data rates: 9.6 Kbps to 12 Mbps including 45.45 Kbps (PROFIBUS-PA) S Implementation of the following network topologies: Bus, star, redundant ring S High availability with redundant media. Distance between two OLMs in the redundant ring limited only by the maximum optical distance.

  • Page 235

    Ordering Data: PROFIBUS OLM/P11 Optical Link Module with 1 x RS-485 and 1 x plastic FO interface, with signaling contact and measurement output PROFIBUS OLM/P12 Optical Link Module with 1 x RS-485 and 2 x plastic FO interfaces, with signaling contact and measurement output PROFIBUS OLM/G11 Optical Link Module with 1 x RS-485 and 1 x...

  • Page 236

    Active Components for Optical Networks PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 237: Active Components For Wireless Networks

    Active Components for Wireless Networks PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 238: Infrared Link Module Ilm

    Active Components for Wireless Networks Infrared Link Module ILM Uses The Infrared Link Module ILM is used for wireless PROFIBUS transmission over short distances ( 15m ). With the ILM, individual nodes can be attached to a segment or two segments can be interconnected. The ILM allows communication between moving nodes, for example automatic trolleys or with changing nodes, for example stations along conveyor belts or production lines.

  • Page 239

    Functions The ILM allows a wireless link with PROFIBUS slaves at a maximum range of 15 m. Communication with several slaves is possible. Interruptions in transmission are detected and indicated by LEDs and the signaling contact. If there is a deterioration in the transmission quality, this is indicated by LEDs and the signaling contact before data transmission is stopped.

  • Page 240

    Active Components for Wireless Networks PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 241: A Testing Profibus

    Testing PROFIBUS PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 242: A.1 Hardware Test Device Bt200 For Profibus-dp, A.1.1 Possible Uses, A.1.2 Area Of Application

    Testing PROFIBUS Hardware Test Device BT200 for PROFIBUS-DP A.1.1 Possible Uses The BT200 hardware test device for PROFIBUS-DP can be used as an installation, commissioning, and service tool. Due to its versatility, it is useful for both the installer of PROFIBUS networks as well as the experienced commissioning engineer and service engineer.

  • Page 243: A.1.4 Design

    A.1.4 Design Figure A-1 Hardware Test Device BT200 for PROFIBUS DP S Compact plastic casing, degree of protection IP 30 S Dimensions (W x H x D) in mm: approx. 210 x 100 x 50 S LCD Display with 2 x 16 characters S Sealed keypad with eight buttons S Attachment to the PROFIBUS network via 9-pin sub-D female connector S Power supply from integrated NC battery...

  • Page 244: A.1.5 Functions

    Testing PROFIBUS A.1.5 Functions Checking the PROFIBUS Cable In this test, the PROFIBUS cable alone is tested. The following errors can be detected: S Short-circuit between data lines or between data line and shield S Line break S Shield break S Reversed polarity (A and B) S Reflections that could cause errors S Check of the number of activated terminating resistors...

  • Page 245: A.1.6 How The Unit Functions

    A.1.6 How the Unit Functions Testing Cables The previously described tests and measurements are based essentially on various voltage, reflection and resistance measurements. To check the cable, the test unit is connected to one end of the cable and a test connector at the other. When installing the cable, the user works gradually from connector to connector.

  • Page 246

    Charging unit (110V AC / 2.4 – 10 V DC) Test connector (spare) NC battery pack (spare) Point-to-point cable (spare) You can download the operating instructions free of charge from the Internet under the entry ID 857969: www.ad.siemens.de/simatic-cs 6ES7 181-0AA00-0AA0 6GT2 003-1AA00 6EP8106-0HB01 6EP8 106-0AC20 6EP8106-0HA01...

  • Page 247: A.2 Testing Fo Transmission Paths, A.2.1 Necessity Of A Final Test

    Testing FO Transmission Paths A.2.1 Necessity of a Final Test The total attenuation of an FO transmission path, particularly the influence of splices, can only be estimated roughly during planning. As a result of inaccuracies when creating the splices and subjecting cables to excessive stress during installation, the actual attenuation may well be higher than the calculated values.

  • Page 248

    Testing PROFIBUS Arrangement for Measuring Attenuation The arrangement for measuring attenuation consists of a light source and an optical meter. The light source is first connected to the receiver via a reference fiber. The optical power measured at the receiver is the reference value for a link without attenuation.

  • Page 249: A.2.3 Optical Time Domain Reflectometer (otdr)

    A.2.3 Optical Time Domain Reflectometer (OTDR) If the attenuation measurement described above indicates that the total attenuation of the fiber-optic link is too high, the causes and the location of the problem must be established. In this case OTDR units are used (OTDR = Optical Time Domain Reflectometer).

  • Page 250

    Testing PROFIBUS How an OTDR Functions An OTDR can be compared to a radar unit The OTDR sends laser light pulses on the FO cable to be tested (the end of the cable is open). These light pulses are reflected more or less strongly by all problem points along the cable. A meter evaluates the intensity and propagation time of the reflected pulses.

  • Page 251

    OTDR Evaluation The OTDR provides the measurement results graphically Start of fiber Backscatter Power ]dB[ Figure A-5 Representation of the OTDR Measurement Results Figure A-5 clearly illustrates that the power of the launched light reduces constantly along the fiber-optic link. There are significant jumps at the coupling points of the fiber.

  • Page 252: A.2.4 Checking The Optical Signal Quality With Profibus Olm V3

    Testing PROFIBUS A.2.4 Checking the Optical Signal Quality with PROFIBUS OLM V3 The receive level of the two optical channels can be detected using a normal commercially available voltmeter attached to measurement sockets on the PROFIBUS OLM V3. The voltmeter can be inserted and removed during operation using 2 mm laboratory test plugs (see Figure A-6).

  • Page 253

    Figure A-7 Correlation Between the Measured Voltage and Signal Quality with an OLM/G12 PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 A-13...

  • Page 254

    Testing PROFIBUS PROFIBUS Networks SIMATIC NET A-14 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 255: B Lightning And Surge Voltage Protection For Lan Cables Between Buildings

    Lightning and Surge Voltage Protection for LAN Cables Between Buildings PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 256: B.1 Why Protect Your Automation System From Overvoltage?, B.2 Protecting Lan Cables From Lightning

    This relates particularly to building structures included in the planning of the building. We therefore recommend that you contact your Siemens representative or a company specialized in lightning protection if you require more detailed information about overvoltage.

  • Page 257

    LAN Cables between Buildings Since LAN cables between buildings are subject to higher overvoltage risks (the effects of lightning), the nodes included in the attached bus segment must be protected from the effects of overvoltage. Lightning protection facilities for LAN cables are implemented in two different components, coarse protection and fine protection.

  • Page 258

    Lightning and Surge Voltage Protection for LAN Cables Between Buildings Coarse protection at entry to building Underground cable, potential equalization cable Figure B-1 Lightning Protection Concept for LAN Cables Between Buildings Fine protection close to first nodes Same protection for further cable entry or exit necessary PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 259: B.2.1 Instructions For Installing Coarse Protection

    B.2.1 Instructions for Installing Coarse Protection The coarse protection must be installed at the point where the LAN cable enters the building and connected to the building equipotential bonding system with low impedance. The following are required to create the coarse protection: S The base section type no.

  • Page 260: B.2.2 Instructions For Installing Fine Protection

    Lightning and Surge Voltage Protection for LAN Cables Between Buildings B.2.2 Instructions for Installing Fine Protection The fine protection should be installed as close as possible to the first bus node following the coarse protection. The following are required to install the fine protection: S The base section type no.

  • Page 261: B.2.3 General Information On The Lightning Protection Equipment From The Firm Of Dehn & Söhne

    B.2.3 General Information on the Lightning Protection Equipment from the Firm of Dehn & Söhne S When installing the modules read the instructions regarding the products from Dehn & Söhne. S If there is a fault in a lightning protection module, communication on the bus is interrupted (cable short-circuit).

  • Page 262

    Lightning and Surge Voltage Protection for LAN Cables Between Buildings PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 263: C Installing Lan Cables

    Installing LAN Cables PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 264: C.1 Lan Cables In Automation Systems

    Installing LAN Cables LAN Cables in Automation Systems LAN Cables as Important Plant Connections In automation systems, the LAN cables are the most important connections between individual plant components. Mechanical damage (cable break) or repeated electrical interference affecting these bus connections reduces the transmission capacity of the system.

  • Page 265: C.2 Electrical Safety

    Electrical Safety The signal levels on electric PROFIBUS cables are low voltage. Correctly installed and operated PROFIBUS LAN cables do not have dangerous electrical voltages. Remember, however, the following rules when installing the power supply for all components (nodes, bus components, etc.) that you want to connect to a PROFIBUS cable.

  • Page 266: C.3 Mechanical Protection Of Lan Cables

    Installing LAN Cables Mechanical Protection of LAN Cables Protection of Electrical and Optical LAN Cables Mechanical protection is required to protect LAN cables from breaks or mechanical damage. Note The guidelines for mechanical protection apply both to electrical and optical cables.

  • Page 267

    Figure C-2 Interrupting the Conduit at an Expansion Joint Bus Terminal RS-485 The installation of electrical LAN cables in a protected area is supported by the use of the RS-485 bus terminal. This allows the attachment of DTEs and service and commissioning work on the DTEs without needing to move the actual LAN cable.

  • Page 268

    Installing LAN Cables Install LAN cables separately To prevent accidental damage to LAN cables, they should be clearly visible and should be separate from all other wiring and cables. To improve EMC, it is often advisable to install the LAN cables in a separate cable channel or in conductive, metal tubes.

  • Page 269: C.4 Electromagnetic Compatibility Of Lan Cables, C.4.1 Measures To Counter Interference Voltages

    The measures involved include the design, structure and correct connection of the LAN cable. The components and LAN cables for SIMATIC NET PROFIBUS meet the requirements of the European standards for devices used in an industrial environment. This is documented by the CE marking.

  • Page 270: C.4.2 Installation And Grounding Of Inactive Metal Parts

    Cable Shields Note the following points about cable shields: S Use SIMATIC NET PROFIBUS cables throughout your system. The shields of these cables have an adequate shield density to meet the legal requirements regarding noise emission and immunity.

  • Page 271

    S The clamps must make good and large-area contact with the shield (see Figure C.3 ). S Contact SIMATIC NET PROFIBUS cables only using the braided copper shield and not the aluminum foil shield. The foil shield is connected to a plastic foil to increase tearing strength and is therefore non-conductive.

  • Page 272: C.4.4 Equipotential Bonding

    Installing LAN Cables S When removing the sheath of the cable, make sure that the braid shield of the cables is not damaged. S When selecting contact elements, remember that the cables for SIMATIC NET PROFIBUS have a braid shield outer diameter of approximately 6 mm. S To allow good contact between grounding elements, tin-plated or galvanically stabilized surfaces are ideal.

  • Page 273

    How do you avoid potential differences? Potential differences must be reduced by installing bonding conductors so that the functions of the electronic components used are guaranteed. When and why is equipotential bonding necessary? The following reasons speak in favor of equipotential bonding: S Devices with a grounded interface can be damaged by potential differences.

  • Page 274

    Installing LAN Cables Note Bonding conductors are unnecessary if the sections of a system are connected exclusively using fiber-optic cable (FO). C-12 PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 275: C.5 Routing Electrical Lan Cables, C.5.1 Cable Categories And Clearances

    Routing Electrical LAN Cables Voltages and Currents Wiring and cables in a system conduct voltages and currents. Depending on the application, the amplitudes can be of an order much higher than the signal voltage on the cable. Switching supply voltages can, for example, produce sharply rising surge voltage peaks in the kV range.

  • Page 276

    Installing LAN Cables Conditions Grouping cables according to voltage classes assumes that the interference voltages relate directly to the power supply voltage conducted (the lower the supply voltage, the lower the interference voltage). Remember, however, that DC or 50 Hz power supply voltages do not represent any danger to PROFIBUS cables.

  • Page 277

    Table C-1 Cabling Within Buildings Cables for ... Bus signals, shielded (PROFIBUS, Industrial Ethernet) Bus signals, unshielded (AS-Interface) PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 and cables for ... Bus signals, shielded In common bundles or cable (PROFIBUS, Industrial Ethernet) channels Bus signals, unshielded (AS-Interface)

  • Page 278: C.5.2 Cabling Within Closets, C.5.3 Cabling Within Buildings

    Installing LAN Cables C.5.2 Cabling within Closets When cabling within wiring closets, note the following points: S The minimum clearance between cables of different categories can be found in Table C-1. In general, the risk of interference due to crosstalk is less the greater the clearance between the cables.

  • Page 279: C.5.4 Cabling Outside Buildings

    Please note the information in Appendix B of this manual. S All SIMATIC NET PROFIBUS cables can be used if they are installed in cable channels protected against dampness. In this case, the clearances specified in section C.5.1 of this manual must be adhered to.

  • Page 280: C.5.5 Special Noise Suppression Measures

    Installing LAN Cables Underground Cabling Note Only the SIMATIC NET PROFIBUS underground cable is suitable for direct installation underground. If the LAN cables are installed directly in the earth, we recommend the following: S install the LAN cable in a trench.

  • Page 281

    Cabinet Lighting Use bulbs for the cabinet lighting, for example LINESTRAR lamps. Avoid the use of fluorescent lamps since they cause interference. If you need to use fluorescent lamps, take the measures shown in Figure C-5. Wire-mesh screen over the lamp Figure C-5 Measures for Interference Suppression of Fluorescent Lamps in a Cabinet PROFIBUS Networks SIMATIC NET...

  • Page 282: C.6 Electromagnetic Compatibility Of Fiber-optic Cables

    Installing LAN Cables Electromagnetic Compatibility of Fiber-Optic Cables Fiber-Optic Cables For LAN cables between buildings and/or external facilities, the use of fiber-optic cables is generally recommended. Due to the optical transmission principle, fiber-optic cables are not affected by electromagnetic interference. Measures for equipotential bonding and for overvoltage protection are unnecessary with fiber-optic cables.

  • Page 283: C.7 Installing Lan Cables, C.7.1 Instructions For Installing Electrical And Optical Lan Cables

    Installing LAN Cables C.7.1 Instructions for Installing Electrical and Optical LAN cables General During installation, remember that LAN cables can only be subjected to a certain amount of mechanical strain. Cables can be damaged or even destroyed by too much tensile stress or pressure, by torsion or by bending them too sharply. The following instructions will help you to avoid damage when installing LAN cables.

  • Page 284

    If the cable is liable to be subjected to torsional load (for example robot cables), use the “SIMATIC NET” flexible cable. This cable is described in Chapter 4 “SIMATIC NET PROFIBUS Cables”. Bending Radius To avoid damage within the LAN cables, they must at no time be bent more sharply than the minimum bending radius.

  • Page 285

    Avoid Loops When laying LAN cables, roll them tangentially from the cable drum or use appropriate rotary tables. This prevents loops forming and resulting in kinks and torsion. Installing other Cables Remember that LAN cables must not be subjected to excessive strain and stress when installed.

  • Page 286: C.8 Additional Instructions On Installing Fiber-optic Cables

    Installing LAN Cables Additional Instructions on Installing Fiber-Optic Cables Protecting Connectors from Contamination Fiber-optic cable connectors are sensitive to contamination. Unconnected male and female connectors must be protected with the supplied dust caps. Attenuation Variations under Load During installation, the fiber-optic cables must not be twisted, stretched or crimped. The specified limit values for tensile strain, bending radii and temperature ranges must be adhered to.

  • Page 287

    Attaching PROFIBUS Fiber–Optic Cables The attachment of the various PROFIBUS fiber–optic cables to optical bus components (OLM, OBT,...) and devices with an integrated optical interface is described in the chapter ”Passive Components for Optical Networks” and in Appendix D. PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 C-25...

  • Page 288

    Installing LAN Cables PROFIBUS Networks SIMATIC NET C-26 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 289

    Installation Instructions for SIMATIC NET PROFIBUS Plastic Fiber-Optic with Simplex Connectors or BFOC Connectors and Pulling Loop for the FO Standard Cable PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 290

    Installation Instructions for SIMATIC NET PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 291

    SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for Simplex Connectors SIMATIC NET Product Information Dated 08.99 Installation Instructions for SIMATIC NET PROFIBUS Plastic Fiber Optic with Simplex Connectors This document contains information in English. Page 1 © SIEMENS AG 1999...

  • Page 292

    We would point out that the contents of this product documentation shall not become a part of or modify any prior or existing agree- ment, commitment or legal relationship. The Purchase Agreement contains the complete and exclusive obligations of Siemens. Any statements contained in this documentation do not create new warranties or restrict the existing warranty.

  • Page 293

    – Suitability of the cable including the connectors for the devices to be interconnected If necessary, use a special cable that meets your requirements. Your SIMATIC NET contact in your local Siemens branch will be happy to advise you. Never exceed the maximum permitted loads (tensile load, transverse compressive load etc.) specified in the data sheet of the cable you are using.

  • Page 294

    SIMATIC NET PROFIBUS Plastic Fiber Optic Plug adapters are designed for fitting preassembled cords once. If a cord has been inserted and must be removed again, the bent cord section must not be used again. Cut off the bent cord section and refit the simplex connector.

  • Page 295

    SIMATIC NET PROFIBUS Plastic Fiber Optic Setting the Cutting Depth of the Cable Knife Set the cutting depth of the cable knife for stripping the outer jacket of the SIMATIC NET PLASTIC FIBER OPTIC standard cable to a depth of 1.5 mm.

  • Page 296

    SIMATIC NET PROFIBUS Plastic Fiber Optic Stripping the Outer Jacket of the SIMATIC NET PLASTIC FIBER OPTIC Standard Cable Press the clamp of the cable knife in the direction of the arrow. Insert the cable up to a length of 20 cm (if you are fitting a plug adapter, 30 cm).

  • Page 297

    SIMATIC NET PROFIBUS Plastic Fiber Optic Separating the SIMATIC NET PLASTIC FIBER OPTIC Duplex Cord Insert a sharp knife 20 cm (if fitting a plug adapter 30 cm) from the end of the cable in the groove between the two cords and split the cords up to the end of the cable.

  • Page 298

    SIMATIC NET PROFIBUS Plastic Fiber Optic Removing the Buffer To strip the buffer from the plastic fibers, use the SIMATIC NET buffer stripper (included in the stripping tool set). Press the two handles of the stripper together and hold them together.

  • Page 299

    SIMATIC NET PROFIBUS Plastic Fiber Optic Fitting Simplex Connectors Insert the cord into the simplex plug as far as it will go Œ and close the clamp •. Caution: The fiber must extend at least 1.5 mm beyond the end face of the connector.

  • Page 300

    Press the two halves together until you hear them click closed. Marking of the SIMATIC NET PROFIBUS plastic fiber-optic standard cable for installation without plug adapters To help you connect up the cable correctly, the standard cable has arrow markings on the orange cord.

  • Page 301

    SIMATIC NET PROFIBUS Plastic Fiber Optic Cables, Tools and Accessories SIMATIC NET PROFIBUS Plastic Fiber Optic, standard cable I-VY4Y2P 980/1000 160A Robust round cable with two plastic FO cords, violet PVC outer jacket and PA inner jacket, without connectors, for use indoors...

  • Page 302

    SIMATIC NET PROFIBUS Plastic Fiber Optic Plug adapter Pack of 50 for installing plastic simplex connectors in conjunction with, for example, IM 467 FO and IM 153-2 FO 6ES7 195-1BE00-0XA0 Other commercially available accessories Sharp scissors for shortening the Kevlar and the fibers Sharp knife for separating the duplex cords Clean, soft cloth for cleaning the polishing holder and the connector end face.

  • Page 303

    SIMATIC NET PROFIBUS Plastic Fiber Optic Installation Instructions for BFOC Connectors SIMATIC NET Product Information Dated 08.99 Installation Instructions for SIMATIC NET PROFIBUS Plastic Fiber Optic with BFOC Connectors This document contains information in English. Page 1 © SIEMENS AG 1999...

  • Page 304

    We would point out that the contents of this product documentation shall not become a part of or modify any prior or existing agreement, commitment or legal relationship. The Purchase Agreement contains the complete and exclusive obligations of Siemens. Any statements contained in this documentation do not create new warranties or restrict the existing warranty.

  • Page 305

    – Suitability of the cable including the connectors for the devices to be interconnected If necessary, use a special cable that meets your requirements. Your SIMATIC NET contact in your local Siemens branch will be happy to advise you. Never exceed the maximum permitted loads (tensile load, transverse compressive load etc.) specified in the data sheet of the cable you are using.

  • Page 306

    SIMATIC NET PROFIBUS Plastic Fiber Optic Setting the Cutting Depth of the Cable Knife Set the cutting depth of the cable knife for stripping the outer jacket of the SIMATIC NET PLASTIC FIBER OPTIC standard cable to a depth of 1.5 mm.

  • Page 307

    SIMATIC NET PROFIBUS Plastic Fiber Optic Stripping the Outer Jacket of the SIMATIC NET PLASTIC FIBER OPTIC Standard Cable Press the clamp of the cable knife in the direction of the arrow. Insert a length of 20 cm of cable.

  • Page 308

    SIMATIC NET PROFIBUS Plastic Fiber Optic Separating the SIMATIC NET PLASTIC FIBER OPTIC Duplex Cord Insert a sharp knife 20 cm from the end of the cable in the groove between the two cords and split the cords up to the end of the cable.

  • Page 309

    SIMATIC NET PROFIBUS Plastic Fiber Optic Removing the Buffer To strip the buffer from the plastic fibers, use the SIMATIC NET buffer stripper (included in the stripping tool set). Press the two handles of the tool and hold them together.

  • Page 310

    SIMATIC NET PROFIBUS Plastic Fiber Optic Crimping the BFOC Connector Push the black anti-kink boot Œ, short crimping sleeve • body of the connector Ž onto the stripped cords. Caution: The fiber must extend at least 1 mm beyond the face of the connector.

  • Page 311

    SIMATIC NET PROFIBUS Plastic Fiber Optic Grinding and Polishing BFOC Connectors To grind the BFOC connector, insert it in the black polishing disc. Fit the connector into the white polishing disc Repeat this procedure with the second connector. Installation Instructions for BFOC Connectors...

  • Page 312

    SIMATIC NET PROFIBUS Plastic Fiber Optic Marking of the SIMATIC NET PROFIBUS plastic fiber-optic standard cable To help you connect up the cable correctly, the standard cable has arrow markings on the orange cord. This helps to make sure that you attach...

  • Page 313

    SIMATIC NET PROFIBUS Plastic Fiber Optic, Stripping Tool Set Cable knife for removing the outer jacket and buffer stripper (round cutting pliers) for removing the buffer of SIMATIC NET PROFIBUS plastic fiber- optic cables. 6GK1 905-6PA10 SIMATIC NET PROFIBUS Plastic Fiber Optic,...

  • Page 314

    SIMATIC NET PROFIBUS Plastic Fiber Optic Other commercially available accessories Sharp scissors for shortening the Kevlar and the fibers Sharp knife for separating the duplex cords Clean, soft cloth for cleaning the polishing discs and the connector end face. Installation Instructions for BFOC Connectors...

  • Page 315

    SIMATIC NET PROFIBUS PCF Fiber Optic Standard Cable SIMATIC NET Product Information Dated 08.99 How to Use the Pulling Loop for the SIMATIC NET PROFIBUS PCF Fiber Optic Standard Cable This document contains information in English. Page 1 © SIEMENS AG 1999 Subject to change...

  • Page 316

    We would point out that the contents of this product documentation shall not become a part of or modify any prior or existing agreement, commitment or legal relationship. The Purchase Agreement contains the complete and exclusive obligations of Siemens. Any statements contained in this documentation do not create new warranties or restrict the existing warranty.

  • Page 317

    – Suitability of the cable including the connectors for the devices to be interconnected If necessary, use a special cable that meets your requirements. Your SIMATIC NET contact in your local Siemens branch will be happy to advise you. Never exceed the maximum permitted loads (tensile load, transverse compressive load etc.) specified in the data sheet of the cable you are using.

  • Page 318

    SIMATIC NET PROFIBUS PCF Fiber Optic Using the Pulling Loop Loop Protective sleeve Die SIMATIC NET PCF Fiber Optic Standard cable is fitted with a pulling loop at one end. It consists of the loop and a protective sleeve. After the cable has been installed, the pulling loop must be removed.

  • Page 319

    SIMATIC NET PROFIBUS PCF Fiber Optic Marking of the SIMATIC NET PROFIBUS PCF Fiber Optic Standard Cable To help you connect up the cable correctly, the PCF standard cable has arrow markings on the orange cord. This helps to make sure that you attach...

  • Page 320

    6XV1821-1BT30 400 m 6XV1821-1BT40 *other lengths available on request SIMATIC NET PROFIBUS PCF Fiber Optic cable I-VY2K 200/230 10A17 + 8B20 PCF FO cable with 2 cords, PVC outer jacket, for spanning distances up to 300 m, preassembled with 2 x 2 simplex connectors,...

  • Page 321: E.1 Ip Degrees Of Protection

    Installing Network Components in Cubicles IP Degrees of Protection Electrical equipment is normally surrounded by a protective casing. The purpose of this casing includes S Protection of persons from touching live components or moving parts (accidental contact protection) S Protection of equipment from intrusion of solid foreign bodies (solid body protection) S Protection of equipment from ingress of water (water protection).

  • Page 322

    Installing Network Components in Cubicles Degree of Protection The various degrees of protection are shown and explained briefly in Table E–1. For more detailed information on the individual ratings and the test conditions that must be fulfilled, please refer to the standards listed above. Table E-1 Degree of Protection Afforded (Brief Outline) Code...

  • Page 323: E.2 Simatic Net Components

    SIMATIC NET Components Ventilation Openings The casings of most SIMATIC NET network components have ventilation openings. To allow more effective cooling of the electronics components, ambient air can flow through the casing. The maximum operating temperatures quoted in the technical specifications apply only when there is unrestricted flow of air through the ventilation openings.

  • Page 324

    Installing Network Components in Cubicles Note Regardless of the degree of protection of the casing, the electrical and optical ports are always sensitive to – mechanical damage – damage caused by electrostatic contact discharge – contamination by dust and fluids Close unused ports with the supplied dust protection caps.

  • Page 325: F Dimension Drawings

    Dimension Drawings PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 326: F.1 Dimension Drawings Of The Bus Connectors

    Dimension Drawings Dimension Drawings of the Bus Connectors 15.8 -0.2 SIEMENS without PG socket Figure F-1 Bus Connector to IP 20 (6ES7 972-0B.11-0XA0) Figure F-2 Bus Connector to IP 20 (6ES7 972-0BA30-0XA0) End face of sub-D male conn. 15.8 -0.2...

  • Page 327

    15.8 -0.1 without PG socket Figure F-3 Bus Connector to IP 20 (6ES7 972-0B.40-0XA0) Figure F-4 Bus Connector to IP 20 (6GK1 500-0EA02) PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 End face of sub-D male conn. 15.8 -0.1 with PG socket End face of sub-D male conn.

  • Page 328

    Dimension Drawings 11.6 Figure F-5 FastConnect Bus Connector (6ES7 972–0B.50–0XA0) Figure F-6 FastConnect Bus Connector (6GK1 500–0FC00) 61.75 44.1 PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 15.8...

  • Page 329: F.2 Dimension Drawings Of The Rs-485 Repeater

    Dimension Drawings of the RS-485 Repeater Figure F-7 RS–485 Repeater on Standard Rail Figure F-8 RS-485 Repeater on S7-300 Rail PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 330: F.3 Dimension Drawing Of The Profibus Terminator

    Dimension Drawings Dimension Drawing of the PROFIBUS Terminator SIEMENS PROFIBUS TERMINATOR 24 V L+ M PE 6ES7 972-0DA00-0AA0 Figure F-9 PROFIBUS Terminator A1 B1 40.3 PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 44.5...

  • Page 331: F.4 Dimension Drawings Of The Rs-485 Bus Terminal

    Dimension Drawings of the RS-485 Bus Terminal SINEC L2 PG/OP Bus Terminal RS 485 Figure F-10 RS-485 Bus Terminal on 15 mm high Standard Rail PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 332: F.5 Dimension Drawings Of The Bt12m Bus Terminal

    Dimension Drawings Dimension Drawings of the BT12M Bus Terminal SIMATIC NET Bus Terminal 12M Figure F-11 BT12M Bus Terminal on 15 mm high Standard Rail PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 333: F.6 Dimension Drawings Of The Optical Bus Terminal Obt

    Dimension Drawings of the Optical Bus Terminal OBT SIMATIC NET Optical Bus Terminal Figure F-12 Optical Bus Terminal OBT on 15 mm high Standard Rail PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 334

    Dimension Drawings SIMATIC NET PROFIBUS Optical Bus Terminal 6GK1500–3AA00 1 2 3 4 5 6 7 L + 24V NEC CLASS2 24VDC, 200 mA Figure F-13 Drilling Template for the Optical Bus Terminal OBT F-10 67.3 PE M L+ 42.5 PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 335: F.7 Dimension Drawings Infrared Link Module Ilm

    Dimension Drawings Infrared Link Module ILM SIEME NS 57.5 87.5 Figure F-14 PROFIBUS ILM Mounting drill hole 1 Figure F-15 Drilling Dimensions for Securing the PROFIBUS ILM to a Mounting Plate PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 P R LF IB U SIL M Mounting drill hole 2 F-11...

  • Page 336: F.8 Dimension Drawings Optical Link Module Olm

    Dimension Drawings Dimension Drawings Optical Link Module OLM Figure F-16 Optical Link Module OLM on 15 mm high Standard Rail F-12 PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 337

    Figure F-17 Mounting the Optical Link Module OLM on a 7.5 mm high Standard Rail Figure F-18 Mounting the Optical Link Module OLM on a Mounting Plate PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000 F-13...

  • Page 338

    Dimension Drawings PROFIBUS Networks SIMATIC NET F-14 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 339: G Operating Instructions Ilm / Olm / Obt

    Operating Instructions ILM / OLM / OBT PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 340

    Operating Instructions ILM / OLM / OBT PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 341

    Im Nachfolgenden finden Sie Informationen in deutscher Sprache. The following description contains information in English.

  • Page 343

    All rights, including rights created by patent grant or registration of a utility or design, are reserved. Copyright Siemens AG 1998 All Rights Reserved Order Number SIMATIC NET PROFIBUS ILM Description and Operating Instructions Siemens AG Infoservice Abteilung A&D Z 533 Postfach 23 48 90713 Fürth...

  • Page 344

    We would point out that the contents of this product documentation shall not become a part of or modify any prior or existing agreement, commitment or legal relationship. The Purchase Agreement contains the complete and exclusive obligations of Siemens. Any statements contained in this documentation do not create new warranties or restrict the existing warranty.

  • Page 345

    Operation with Signaling Contact Installation and Startup Notes on Safety General Notes on Installation and Startup Installing the PROFIBUS ILM Connecting the Electrical RS 485 Bus Cables Connecting the Power Supply and the Signaling Contact Displays Copyright Infrared Link Modul (ILM) by Siemens...

  • Page 346

    Calculating the Propagation Time on Electric Cables and Fiber-Optic Cables 10.2.2 Delay Time of the PROFIBUS ILM 10.2.3 Delay Time of Further Active PROFIBUS Network Components 10.2.4 Transmission Delay Time TTD Technical Specifications 11.1 Illumination Range Appendix References Copyright by Siemens 6ZB530–3AC30–0BA1...

  • Page 347

    1 x sealing plugs for unused threaded cable inlet 1 x order form Not included with the product are: â Mounting brackets â Cables for attaching to PROFIBUS or power supply cables â Description and Operating Instructions Copyright Infrared Link Modul (ILM) by Siemens...

  • Page 348

    Active or (or passive) bus node Master Passive bus node Slave Infrared link module (ILM) terminating resistor activated Infrared link module (ILM) terminating resistor deactivated Important information and notes “Sequence of actions” to be performed by the user. Copyright by Siemens 6ZB530–3AC30–0BA1...

  • Page 349

    6ZB5530–3AC30–0BA1 Introduction The SIMATIC NET PROFIBUS ILM (Infrared Link Module) is intended for use in PROFIBUS networks. It allows the conversion of electrical PROFIBUS interfaces (RS 485 level) into transmittable light signals in the infrared, invisible wavelength range and vice-versa.

  • Page 350

    PROFIBUS and processes the standard data rates of 9600 bps to 1.5 Mbps. The data rate must be set by the user. The electrical channel is connected via SIMATIC NET PROFIBUS cables (for ordering data, see Catalog IK10). The cables enter the casing via heavy-duty threaded cable inlets. The shield makes contact here and the wires are connected using screw-type terminals.

  • Page 351

    IP65. The casing must be mounted by the user on a grounded surface with two screws. When shipped, the data rate is set to 1.5 Mbps, the signaling contact is not activated if errors occur and the terminating resistor is not activated. Copyright by Siemens...

  • Page 352

    Infrared Link Modul (ILM) Description of the Functions Transmission Rate The SIMATIC NET PROFIBUS ILM supports the following transmission rates: 9.6 Kbps 19.2 Kbps 45.45 Kbps 93.75 Kbps 187.5 Kbps Kbps Mbps (default) The transmission rates of the connected network nodes can have the tolerance of )/–0.3% as specified in the PROFIBUS standard.

  • Page 353

    The transmission using an infrared link is generally more susceptible to problems than transmission via cable (optical or electric). Infrared transmission link 0.5 to 15 m PROFIBUS slave network segment Infrared Link Modul (ILM) Slave Slave Slave Copyright by Siemens...

  • Page 354

    Note When cascading, the delay times of the PROFIBUS ILMs must be taken into account. The delay times are shown in Table 3 and must be included in the calculations during configuration. Copyright by Siemens 6ZB530–3AC30–0BA1...

  • Page 355

    Slave Figure 3: Cascading Two PROFIBUS ILM Transmission Links Infrared transmission link 1 0.5 to 15 m PROFIBUS slave network segment 1 Infrared transmission link 2 0.5 to 15 m Infrared Link Modul (ILM) Slave Slave Slave Copyright by Siemens...

  • Page 356

    This topology is also suitable when the PROFIBUS ILMs of the slave network segments cannot be arranged so that they are all located in the light cone of the PROFIBUS ILM on the master network segment. Copyright by Siemens 6ZB530–3AC30–0BA1...

  • Page 357

    0.5 to 15 m PROFIBUS slave network segment 1 Optical isolation between the infra- red transmission links Infrared transmission link 1 0.5 to 15 m PROFIBUS slave network segment 2 Infrared Link Modul (ILM) Slave Slave Slave Slave Copyright by Siemens...

  • Page 358

    ILMs to a solid angle of )/–10 degrees but also from the point of view of the master PROFIBUS ILM the poorer monitoring of the link because the acknowledgment pulse mechanism cannot be used (see Section 5.6.2). Copyright by Siemens...

  • Page 359

    1 Infrared transmission link 2 0.5 to 15 m PROFIBUS slave network segment 2 Infrared transmission link 3 0.5 to 15 m PROFIBUS slave network segment 3 Infrared Link Modul (ILM) Slave Slave Slave Slave Slave Slave Copyright by Siemens...

  • Page 360

    The PROFIBUS ILM therefore indicates when other light sources subject it to an illegally high infrared radiation by lighting up the red ”ERROR” LED. The user can also configure a switch to activate the signaling contact in this situation. Copyright by Siemens 6ZB530–3AC30–0BA1...

  • Page 361

    PROFIBUS ILM but is restricted exclusively to the optical transmission link. Note The “monitor link with acknowledgment pulse” configuration must be activated on both PROFIBUS ILMs of a point-to-point link. Infrared Link Modul (ILM) Copyright by Siemens...

  • Page 362

    The user can also configure a switch to activate a signaling contact. The signaling contact remains inactive unless the “monitor link with acknowledgment pulse” configuration was set. Copyright by Siemens 6ZB530–3AC30–0BA1...

  • Page 363

    PROFIBUS cable Figure 6: Elements for Setting the Configuration of the PROFIBUS ILM Configuration switch (S201) Power supply and signaling contact Cable for power supply and signaling contact Infrared Link Modul (ILM) Cable clamps for contacting the shield Copyright by Siemens...

  • Page 364

    (two PROFIBUS cables connected). If the terminating resistor is not set correctly, sporadic errors will occur on PROFIBUS that cannot be detected by the PROFIBUS ILM. SIEMENS Terminating resistor Terminating resistor Figure 7: Setting the Terminating Resistor Copyright by Siemens SIEMENS 6ZB530–3AC30–0BA1...

  • Page 365

    1.5 Mbps 500 Kbps 187.5 Kbps 93.75 Kbps 45.45 Kbps 19.2 Kbps 9.6 Kbps reserved Figure 8: Setting the Transmission Rate Setting 0 As shipped: All switches 0 Setting 1 Infrared Link Modul (ILM) Copyright by Siemens...

  • Page 366

    Switch 4: Link monitoring with acknowledgment pulse Operation without acknowledgment pulse Operation with acknowledgment pulse Figure 9: Operation with Acknowledgment Pulse and the Corresponding Switch Setting Copyright by Siemens Setting 0 As shipped: All switches 0 Setting 1 6ZB530–3AC30–0BA1...

  • Page 367

    LED displays can also provide information and step-by-step disabling of the switches that activate the signaling contact can narrow down the problem. Note Remember that if you want to activate the signaling contact when the acknowledgment pulse is absent, the “monitor link with acknowledgment pulse” configuration must be activated. Copyright by Siemens...

  • Page 368

    Link monitoring with ack- nowledgment pulse must be activated if switch 5 is used Figure 10: Configuration for Triggering the Signaling Contact Copyright by Siemens As shipped: Setting 0 All switches 0 Setting 1 Signaling contact not activated if acknowledg- ment pulse absent...

  • Page 369

    PROFIBUS ILM is included in the class of devices subject to the regulations covering laser protection IEC 60 825–1 although the device does not include laser equipment. The emitted infrared power is below the limit values of laser protection class 1. Infrared Link Modul (ILM) Copyright by Siemens...

  • Page 370

    Test the transmission link with data exchange. The yellow TX and RX LEDs should be lit as well as the green power LED. The red “ERROR” LED must not be lit since this indicates too much extraneous light which always causes Copyright by Siemens 6ZB530–3AC30–0BA1...

  • Page 371

    The red “LOW” LED should only be lit when the level on the infrared link is close to the minimum receive level (operation at the edge of the illumination cone). Check the data exchange for incorrect data using SCOPE for PROFIBUS (TMG i-tec), a tool for diagnostics on PROFIBUS networks. Infrared Link Modul (ILM) Copyright by Siemens...

  • Page 372

    Note Make sure that there is sufficient space to connect the bus and power supply cables. The cables must not extend into the area of the send and receive window. Copyright by Siemens 6ZB530–3AC30–0BA1 163 mm Mounting hole 2...

  • Page 373

    3 mm thick sheet aluminum is, for example, suitable or galvanized 2 mm sheet steel. If suitable profile material is available, this makes construction even simpler since it is not necessary to bend the arm. Infrared Link Modul (ILM) Copyright by Siemens...

  • Page 374

    ILM can be aligned continuously and therefore more accurately on the vertical axis during operation. Copyright by Siemens 6ZB530–3AC30–0BA1 20mm 6.4 mm...

  • Page 375

    Mounting bracket 2 Site of in- stallation Installation of the ILM with a mounting bracket front view Figure 13: Front View of the PROFIBUS ILM Installed with Mounting Brackets PROFIBUSILM Infrared Link Modul (ILM) Copyright by Siemens...

  • Page 376

    Installation of the ILM with mounting bracket top view Figure 14: Top View of the PROFIBUS ILM Installed With Mounting Brackets Copyright by Siemens Alignment by installing in other holes Mounting bracket 2 Secured on base with two M4 bolts...

  • Page 377

    Threaded cable inlets Cables for PROFIBUS, power supply and signaling contact Infrared Link Modul (ILM) Copyright by Siemens...

  • Page 378

    If a union nut must be released again, the threaded cable inlet should be tightened again afterwards to make sure that this is still flush against the casing. Copyright by Siemens Bare wire approx. 8 mm Core insulation approx. 8 mm Fold back braided shield approx.

  • Page 379

    The threaded cable inlet is used only for sealing the cable entry and to prevent the cable being pulled out accidentally. Neither of these, however, is intended as strain relief against continuous tensile stress on the cables. Copyright by Siemens...

  • Page 380

    Neither of these, however, is intended as strain relief against continuous tensile stress on the cables. Copyright by Siemens Bare wire approx. 8 mm Core insulation approx. 8 mm Fold back braided shield approx.

  • Page 381

    Class 2 or Class 3 power source as defined by the National Electric Code (NEC), Article 725–2 and the Canadian Electrical Code (CEC). Signaling contact (normally closed contact) Terminal block for power supply and signaling contact 30 W 30V DC; 1.0 A Infrared Link Modul (ILM) Copyright by Siemens...

  • Page 382

    ERROR red LED not lit lit red Copyright by Siemens No power supply or internal power supply defective or ribbon ca- ble not plugged in. Power supply OK Data not sent optically Data are sent, acknowledgment bit correctly received or acknow- ledgment bit mechanism not activated.

  • Page 383

    PROFIBUS slave is not turned on PROFIBUS slave node not correctly addressed and therefore not responding No acknowledgment pulse received, partner sta- tion not responding Infrared Link Modul (ILM) Signaling Contact Always si- gnals Signals when configured (acknowledg- ment pulse) Copyright by Siemens...

  • Page 384

    ERROR LED lit red Table 1: Possible problems operating the PROFIBUS ILM Copyright by Siemens Possible Causes No acknowledgment pulse received since partner station not configured with acknowledgment pulse On point-to-multipoint links on the PROFIBUS ILM of the master subnet if acknowledgment bit configured (see Section 6.4)

  • Page 385

    Note Remember that sporadic data errors on the cable network are not detected by the PROFIBUS ILM. The PROFIBUS ILM cannot check the contents of frames but can only monitor the basic functions and optical transmission quality. Copyright by Siemens...

  • Page 386

    Indicators for long propagation times are as follows: â Long fiber-optic or copper cables â High cascading depth of active components (PROFIBUS OLMs, PROFIBUS ILMs, PROFIBUS repeaters) The delay time is approximately 5 s per km cable length. Copyright by Siemens 6ZB530–3AC30–0BA1...

  • Page 387

    10.2.4 Transmission Delay Time TTD The total delay time of the PROFIBUS network is the sum of all the values calculated in Sections 10.2.1 to 10.2.3. 0.05 0.10 0.23 0.47 0.94 2.50 7.50 Infrared Link Modul (ILM) Copyright by Siemens...

  • Page 388

    Distance between two ILMs Signaling contacts Table 3: Technical Specifications of the PROFIBUS ILM Copyright by Siemens 6ZB530–3AC30–0BA1 24 V DC (20 V to 30 V) ma . 300 mA 9.600 Kbps; 19.200 Kbps; 45.45 Kbps, 93.75 Kbps; 187.5 Kbps; 500 Kbps; 1.5 Mbps;...

  • Page 389

    10 kHz – 80 MHz (ENV 50141) On power supply cables and shielded RS 485 LAN ca- bles: 2 kV (IEC 1000–4–4) On power supply cables: 1 kV balanced On shielded RS 485 cables: 2 kV unbalanced (IEC 1000–4–5) Infrared Link Modul (ILM) Copyright by Siemens...

  • Page 390

    Weight Dimensions Casing material Table 4: Environmental Conditions for the Use of the PROFIBUS ILM Copyright by Siemens 6ZB530–3AC30–0BA1 VDE 0806=EN60950 and IEC950 Requirements are met 0 C to )60 C (IEC 68–2–1, IEC 68–2–2) –40 C to )70 C (IEC 68–2–14)

  • Page 391

    If the liquid produces bubbles, the reduction is sometimes even higher since not only the optical attenuation but also the optical refraction of the liquid takes effect. Copyright by Siemens...

  • Page 392

    The “LOW” LED displays critical receive levels. Minimum distance to partner ILM 0.5 m Optical axis 12 m Figure 19: Transmitter Illumination of the PROFIBUS ILM Copyright by Siemens 15 m 6ZB530–3AC30–0BA1 2 m 4 m +/–10 degrees aperture angle...

  • Page 393

    Core diameter 0.64 mm Core cross-section 0.34 mm Table 5: Electrical Parameters of the Shielded Twisted Pair LAN Cables Type B 100 to 130 ohms 100 kHz) <60 pF/m – 0.53 mm 0.22 mm Infrared Link Modul (ILM) Copyright by Siemens...

  • Page 394

    Infrared Link Modul (ILM) References â PROFIBUS networks SIEMENS AG â DIN 19245 Part 1 (04.91): “Messen, Steuern, Regeln; PROFIBUS Teil 1; Process Field Bus; Übertragungstechnik, ” â DIN 19245 Teil 2 (10.91): “Messen, Steuern, Regeln; PROFIBUS Teil 3; Process Field Bus; Dezentrale Peripherie (DP)”...

  • Page 395

    Before the final product is started up, it must be established that it conforms to the directive 89/392EEC. Installation Guidelines The product meets the requirements providing you adhere to the guidelines for installation and operation in the documentation SIMATIC NET PROFIBUS Networks. Order no. 6GK1 503–0AA00 Requirements Noise emission EN 50081–2 : 1993...

  • Page 396

    Infrared Link Modul (ILM) 6ZB530–3AC30–0BA1 Copyright by Siemens...

  • Page 397

    Description and Operating Instructions SIMATIC NET PROFIBUS Optical Link Modules OLM/P11 OLM/P12 OLM/G11 OLM/G12 OLM/G12-EEC OLM/G11-1300 OLM/G12-1300...

  • Page 398

    Other designations in this manual may be registered trademarks, the use of which by third parties for their own purposes may violate the rights of the owner. Copyright Siemens AG, 1996 to 1999, All rights reserved Transmission or duplication of this document, evaluation and providing information about its contents are not permitted unless expressly authorized.

  • Page 399

    Contents Contents 1 Introduction ................2 General Functions .

  • Page 400

    Order Numbers SIMATIC NET OLM/P11 SIMATIC NET OLM/P12 SIMATIC NET OLM/G11 SIMATIC NET OLM/G12 SIMATIC NET OLM/G12-EEC SIMATIC NET OLM/G11-1300 SIMATIC NET OLM/G12-1300 6GK1 502-2CA00 6GK1 502-3CA00 6GK1 502-2CB00 6GK1 502-3CB00 6GK1 502-3CD00 6GK1 502-2CC00 6GK1 502-3CC00...

  • Page 401

    1 Introduction 1 Introduction The PROFIBUS OLM (Optical Link Module) product family consists of OLM/P11, OLM/P12, OLM/G11, OLM/G12, OLM/G12-EEC, OLM/G11-1300 and OLM/G12-1300. PROFIBUS OLMs are designed to be used in optical PROFIBUS field bus networks. They enable electrical PROFIBUS interfaces (RS 485 level) to be converted into optical PROFIBUS interfaces and vice-versa. By profiting from the familiar advantages of optical transmission technology, the modules can be integrated into existing PROFIBUS field bus networks.

  • Page 402

    1 Introduction Table 1 shows the different methods for connecting the modules, and the maximum optical ranges of each port. OLM/ Number of ports – electrical – optical Fiber types – Plastic optical fibers 980/1000 µm – PCF optical fibers 200/230 µm Quartz glass optical fibers 10/125 µm...

  • Page 403

    2 General Functions 2 General Functions 2.1 Non operating mode related functions Transmission rate The PROFIBUS OLMs support all the transmission speeds (transmission rates) defined in the EN 50170 standard: 9.6 kBit/s, 19.2 kBit/s, 45.45 kBit/s, 93.75 kBit/s, 187.5 kBit/s and 500 kBit/s, and additionally 1.5 MBit/s, 3 MBit/s, 6 MBit/s and 12 MBit/s.

  • Page 404

    2 General Functions 2 General Functions 2.2 Operating mode related functions The following functions are only available for the optical ports. Whether the functions can be activated depends on the operating mode which has been set. Please refer to the following chapters for details. Line monitoring with echoes The modules enable the connected optical paths to be actively monitored for interruptions in the fiber line by means of the functions ”Send echo“, ”Monitor echo“...

  • Page 405

    3 Network Topologies 3 Network Topologies The following network topologies can be realized with the PROFIBUS OLM: Point-to-point connections Line topologies Star topologies Redundant optical rings Combinations of these basic types are also possible. Lines with two optical fibers are used to create the fiber links for these network topologies.

  • Page 406

    3 Network Topologies In a line structure, the individual PROFIBUS OLMs are connected together by dual-fiber optical fibers. Modules with one optical port are sufficient at the beginning and end of a line, between which modules with two optical ports are necessary.

  • Page 407

    3 Network Topologies 3.1.2 Line topology without optical fiber link monitoring Use this operating mode if you connect a PROFIBUS OLM with another optical fiber network component, which does not send a frame echo and does not expect or is not compatible with a frame echo in accordance with PROFIBUS guidelines (optical/electrical converter).

  • Page 408

    3 Network Topologies 3.2 Star topology S0 = 1 OLM/P11 CH 2 CH 2 OLM/P11 CH 2 OLM/G11 Terminal unit / bus segment Terminal unit / bus segment Fig. 3: Network structure in an optic star topology Several modules are combined to form an active PROFIBUS star coupler. Other modules are connected to this by dual-fiber optical fiber lines.

  • Page 409

    3 Network Topologies Switch on the terminating resistors in the bus port connectors (see 4.4.3, ”Connecting the electric RS 485 bus lines“, p. 22) at both ends of the electrical star segment. Do not connect a bus subscriber to the electrical star segment wherever possible. Modules with one or two optical ports can be used to create an active PROFIBUS star coupler.

  • Page 410

    3 Network Topologies This network topology represents a special form of line topology. A high degree of network operating safety is achieved by ”closing“ the optical line. A redundant optical ring can only be realized with modules with two optical ports of the same type.

  • Page 411

    4 Setting Up 4 Setting Up 4.1 Safety notice Only use the PROFIBUS OLM as described in this ”Description and Operating Instructions“. Pay particular attention to all the warnings and safety instructions. Only operate the modules with a safety extra-low voltage in accordance with IEC 950/EN 60 950/VDE 0805 with a maximum rating of +32 V (typically +24 V).

  • Page 412

    4 Setting Up 4.2 General information about setting up Select the network topology which is most suitable for your requirements. The modules can then be put into operation in the following steps: Check and adjust (if necessary) the DIL switch Note: The DIL switches may only be operated in an ambient temperature of between 0°C and +60°C.

  • Page 413

    4 Setting Up 4.3 Setting compatibility, operating mode and transmitting power Please note: The OLM must be switched off when changing the operating mode. You can switch off the OLM by, e.g., unplugging the 5-pin terminal block. 4.3.1 Setting the compatibility The DIL switch S7 is used to switch the functional compatibility to devices of the preceding generation (SINEC L2FO OLM/P3, -P4, -S3, -S4, S3-1300 and -S4-1300) either off or on.

  • Page 414

    4 Setting Up 4.3.2 Setting the operating mode Attention! The following details only apply for the S7 default position (S7 = 0)! The DIL switch S0 is used to set the operating mode of the electrical port CH1. The DIL switches S1 and S2 are used to set the operating mode of the optical port CH2. The DIL switches S3 and S4 are used to set the operating mode of the optical port CH3.

  • Page 415

    4 Setting Up Operating mode ”Redundant optical ring“ CH 3 CH 2 CH3 is activated in this operating mode if S3 and S4 are in Position 1. CH 3 CH2 is activated in this operating mode if S1 and S2 are in Position 1. CH 2 CH 1 Note: This operating mode must always be set at both of the optical ports of...

  • Page 416

    4 Setting Up 4.4 Installation 4.4.1 Connecting the optical lines CH 2 CH 3 Fig. 6. View of the bottom of the module with the optical ports 2 and 3 (device with two optical ports). Version 1.0 8/00 Connect the individual modules using a dual-fiber optical fiber line with BFOC/2.5 connectors.

  • Page 417

    4 Setting Up 4.4.2 Mounting the modules Locking slide Fig. 7: Mounting a module on a standard hat rail PROFIBUS OLM System CH 2 CH 1 CH 2 CH 3 CH 3 Receive Signal Intensity CH 1 Toothed washer Fig. 8: Mounting a module on a mounting plate Version 1.0 8/00 The OLM modules can either be mounted on a 35 mm hat rail in accordance with DIN EN 50022 or directly on to a...

  • Page 418

    4 Setting Up 4.4.3 Connecting the electric RS 485 bus lines 9 / n.c. 8 / RxD/TxD –N 7 / n.c. 6 / + 5 V Output Fig. 9: Electrical port – assignment of Sub-D sockets Only use shielded and twisted-pair wiring as a RS 485 bus line as described in the manual ”SIMATIC NET PROFIBUS networks“.

  • Page 419

    4 Setting Up 4.4.4 Connecting the power supply L1+ / +24 V L2+ / +24 V* Fig. 10: Operating voltage supply – assignment of 5-pin terminal block 4.4.5 Connecting the signaling contact lines Fig. 11: Signaling contact - relay with unconnected contacts; the contact is open if a fault occurs Version 1.0 8/00 The terminal block can be removed from the device to...

  • Page 420

    4 Setting Up L1+ / +24 V L2+ / +24 V* Fig. 12: Signaling contact – pin assignment 5-pin terminal block 4.4.6 Defining the receiving level of the optical ports PROFIBUS OLM System CH 2 Measuring sockets CH 3 Receive Signal Intensity Reference potential...

  • Page 421

    5 LED Indicators and Troubleshooting 5 LED Indicators and Troubleshooting 5.1 LED Indicators PROFIBUS OLM LED indicators System CH 2 CH 3 Receive Signal Intensity Fig. 14: LED indicators on the front plate LED Indicator System lights green not lit flashes red flashes red /green Version 1.0 8/00...

  • Page 422

    5 LED Indicators and Troubleshooting LED Indicator lights yellow electric not lit flashes/lights red CH2, CH3 lights yellow optical not lit flashes yellow lights red flashes red / yellow lights yellow not lit Table 2: What the LED indicators and signaling contacts mean Version 1.0 8/00 Possible causes Signals are being received on the RS 485 bus line...

  • Page 423

    5 LED Indicators and Troubleshooting 5.2 Troubleshooting This chapter helps you to localize faults after they have been indicated (by LEDs or signal contacts). Please also refer to the description of the LED indicators in 5.1, p. 25. Fault indicated on the system LED See description of the LED indicators in 5.1, p.

  • Page 424

    5 LED Indicators and Troubleshooting 2. Define the optical receiving level (see 4.4.6 ”Defining the receiving level of the optical ports“, p. 24 and 8.4 ”Measuring sockets“, p. 35): – Level is in the range ”Function is not guaranteed“. Check the optical fiber absorption using an optical level measuring device. too high: replace the optical fiber in valid range:...

  • Page 425

    6 Configuration 6 Configuration During configuration, the PROFIBUS network parameter "Slot time" must be adapted to the network coverage, network topology and the data rate due to frame delays caused by lines and network components, as well as by monitoring mechanisms in the network components. 6.1 Configuration of optical line and star topologies The PROFIBUS network is configured, e.g.

  • Page 426

    Configuration Data rate MBit/s 1651 MBit/s MBit/s 1.5 MBit/s kBit/s 187.5 kBit/s 93.75 kBit/s 45.45 kBit/s 19.2 kBit/s kBit/s Table 3a: Constants for calculating the slot time at DP standard (redundant optical ring) Data rate MBit/s 1651 MBit/s MBit/s 1.5 MBit/s 2011 kBit/s 187.5 kBit/s...

  • Page 427

    7 Technical Data 7 Technical Data OLM Module Voltage/power supply Operating voltage Current consumption Output voltage/current for terminal resistors (Pin 6 Sub-D socket) Signaling contact Maximum switch voltage Maximum switch current Signal transmission Transmission rate Setting transmission rate Bit error rate Signal processing time (any input/output) Retimer Input Port 1 to 3...

  • Page 428

    7 Technical Data OLM Module Transmission distance – with glass fiber E 10/125 (0.5 dB/km) – with glass fiber G 50/125 (860 nm: 3.0 dB/km; 1310 nm: 1.0 dB/km) – with glass fiber G 62,5/125 (860 nm: 3.5 dB/km; 1310 nm: 1.0 dB/km) –...

  • Page 429

    ”Description and Operating Instructions SIMATIC NET Optical Link Modules“ and the following documentation: SIMATIC NET PROFIBUS Networks Manual Declaration of In accordance with the above-named EC directive, the EC Declaration of Conformity...

  • Page 430

    8 Appendix 8.2 Literature notes – Manual SIMATC NET PROFIBUS Networks SIEMENS AG – EN 50170-1-2 1996: „General Purpose Field Communication System“, Volume 2 „Physical Layer Spezification and Service Definition“ – DIN 19245: „Messen, Steuern, Regeln; PROFIBUS Teil 3; Process Field Bus; Dezentrale Peripherie (DP)“...

  • Page 431

    8 Appendix 8.4 Measuring sockets Signal quality good critical poor Diagram 1: Assignment of measured output voltage to signal quality. Notes: In order to attain a valid reading, it is necessary for the partner OLM at the other end of the optical fiber to send regular PROFIBUS frames.

  • Page 432

    SIMATIC Training Centers We offer courses designed to enable you to familiarize yourself with the SIMATIC S7 automation system. Please contact your regional Training Center or the Central Training Center in 90327 Nuremberg, Germany. Internet: http://www.ad.siemens.de/training E-Mail: AD-Training@nbgm.siemens.de SIMATIC Customer Support Hotline Available worldwide 24 hours a day: Nuremberg (Nürnberg)

  • Page 433

    +49 (911) 750-9991 E-Mail: juergen.hertlein@fthw.siemens.de Further support If you have any more questions about SIMATIC NET products, please contact your Siemens contact partner at your local or regional branch office. The addresses can be found – in our catalogue IK 10 –...

  • Page 435

    SIMATIC NET PROFIBUS Optical Bus Terminal (OBT) Manual C79000-G8976-C122-02 Release 2 Contents Introduction The SIMATIC NET PROFIBUS OBT Product Functional Description Network Topology Installation and Startup Troubleshooting Technical Specifications Notes on the CE Label References Abbreviations...

  • Page 436

    Trademarks SIMATICR, SIMATIC HMIR and SIMATIC NETR are registered trademarks of SIEMENS AG. Third parties using for their own purposes any other names in this document which refer to trademarks might infringe upon the rights of the trademark owners.

  • Page 437

    ............The SIMATIC NET PROFIBUS OBT Product Functional Description .

  • Page 438

    Contents Contents PROFIBUS Optical Bus Terminal (OBT) C79000-G8976-C122-02...

  • Page 439

    Introduction The PROFIBUS OBT (Optical Bus Terminal) is a network component for use in optical PROFIBUS DP fieldbus networks. It allows the attachment of a single device without an integrated optical interface to the optical PROFIBUS DP. The following figure illustrates a typical configuration. ET 200M with Programming Device FO interface...

  • Page 440

    Introduction Connections The connection between the individual nodes takes the form of an optical bus with two-fiber plastic FO cables (plastic fiber-optic cables are also known as POF, Polymer Optical Fiber) or PCF FO cables (PCF = Polymer Cladded Fiber, corresponds to HCSt completely insensitive to electromagnetic disturbance, no grounding concept whatsoever is necessary.

  • Page 441

    The SIMATIC NET PROFIBUS OBT Product Supplied 1 x PROFIBUS OBT 1 x order form for the PROFIBUS OBT operating instructions Not supplied Plastic fiber–optic cable, can be purchased by the meter Tools for connectoring fiber-optic cables PROFIBUS OBT operating instructions...

  • Page 442

    The SIMATIC NET PROFIBUS OBT Product PROFIBUS Optical Bus Terminal (OBT) C79000-G8976-C122-02...

  • Page 443

    Functional Description The OBT is a repeater with 3 channels. Interfaces The OBT has the following interfaces for attachment to PROFIBUS DP segments: S Channel 1 (CH1) is an electrical RS-485 interface. This is implemented as a 9-pin D SUB female connector. A single PROFIBUS DP node can be connected via this channel or a PC, PG or OP can be connected to the OBT.

  • Page 444

    Functional Description Automatic Transmission Rate Detection The OBT supports all PROFIBUS transmission rates (12 Mbps , 6 Mbps, 3 Mbps, 1.5 Mbps, 500 Kbps and 187.5 Kbps, 93.75 Kbps, 45.45 Kbps, 19.2 Kbps, 9.6 Kbps). The transmission rate is detected automatically. No settings are necessary. Supported FO Fiber Types The OBT supports the fiber types listed in the table below: Table 3-1...

  • Page 445

    L+ 24V (green) Unlit: No power supply or internal power supply is defective or short-circuited Flashes: Power supply present; Transmission rate not yet set Lit green: Transmission rate set, power supply O.K. CH1, CH2 , CH3 (channel 1 to 3, yellow) Unlit: No data being received Lit yellow:...

  • Page 446

    Functional Description Operator Controls The OBT itself does not have operator controls. Care must simply be taken that the PROFIBUS connecting cable (not supplied) attached to Channel 1 is terminated at both ends. PROFIBUS Optical Bus Terminal (OBT) C79000-G8976-C122-02...

  • Page 447

    Network Topology Optical Bus The OBT is operated in conjunction with other SIMATIC devices, for example the IM 153-2 FO or IM 467 FO on the optical PROFIBUS DP in the form of an optical bus. Individual PROFIBUS DP nodes with an RS-485 interface are connected to channel 1 of the OBT via a maximum 100 m long PROFIBUS cable with bus connectors fitted at both ends.

  • Page 448

    Network Topology Using Long Fiber Optic Sections The maximum permitted length of PCF FO cables with the OBT is 300 m. If longer distances are required with fiber-optic cables, then other fiber-optic types such as graded glass fibers or monomode fibers are necessary and these can be used in a combination of OBT with OLM (Optical Link Module).

  • Page 449

    Attaching RS-485 Segments The OBT allows the attachment of a single PROFIBUS DP node. To attach RS-485 segments with more than one node, a further network component is available, the OLM 12M. The requirement for using the OLM 12M is that the PROFIBUS DP network is operated at a transmission rate of 187.5 Kbps, 500 Kbps, 1.5 Mbps or 12 Mbps.

  • Page 450

    Network Topology PROFIBUS Optical Bus Terminal (OBT) C79000-G8976-C122-02...

  • Page 451

    Installation and Startup Note Use the PROFIBUS OBT only as described in this manual. Note Pay particular attention to all warnings and safety–related instructions. Note The PROFIBUS OBT must only be operated with a safety extra-low voltage (SELV) complying with IEC 950/ EN 60 950/ VDE 0805 with a maximum of +32 V (typically +24 V).

  • Page 452

    Installation and Startup Note The RS-485 channel CH1 of the PROFIBUS OBT is electrically isolated from the 24V input. This isolation is required for correct functioning and is not a safety measure. Note Make sure that the PROFIBUS OBT is adequately grounded by connecting the rail or mounting plate to local ground with low resistance and low inductance.

  • Page 453

    Installation Installing the PROFIBUS OBT PROFIBUS OBT can be installed either on a 35 mm standard rail with a height of 15 mm in compliance with DIN EN 50 022 – 35 x 15 or directly on a level surface. S Select the installation location so that the climatic limit values listed in the technical specifications can be adhered to.

  • Page 454

    Installation and Startup Installation on a Mounting Plate PROFIBUS OBTs have two holes drilled in them. This allows them to be installed on any flat surface, for example on the mounting plate of a cubicle. S Drill two holes in the mounting plate as shown in the drill template in Figure 5-2. S Secure the modules with machine screws (for example M3 x 75 and M3 x 55).

  • Page 455

    You can download a detailed instruction brochure with photos illustrating how to connector plastic fiber–optic cables from the Internet: S German: http://www.ad.siemens.de/csi/net S English: http://www.ad.siemens.de/csi_e/net Select SEARCH on this page and enter the number 574203 in the Entry ID box and start the search.

  • Page 456

    Installation and Startup Connecting the Optical Cables Figure 5-4 View of the Module from Below with the Optical Channels CH2 and CH3 A = CH2, optical receiver B = CH2, optical sender C = CH3, optical receiver D = CH3, optical sender S Connect the individual PROFIBUS OBTs using a duplex FO cable, fitted with two pairs of simplex connectors.

  • Page 457

    Note If the fiber protrudes beyond the surface of the connector, the connector must not be inserted into the socket otherwise the optical components can be permanently damaged. Connecting the Electrical RS–485 Cable Channel CH1 is used to connect a single PROFIBUS DP DTE. CH1 is designed as an electrical RS 485 interface with a 9-pin sub D female connector.

  • Page 458

    Installation and Startup PROFIBUS Optical Bus Terminal (OBT) C79000-G8976-C122-02...

  • Page 459

    Troubleshooting Table 6-1 LED Display Possible Cause of Problem L+ 24V LED not lit - Power outage - OBT defective L+ 24V LED flashing - The transmission rate could not be set CH1 LED not lit - Break on one or more wires of the RS-485 LAN cable - Wires A and B of the RS-485 LAN able connected to wrong terminals - Attached PROFIBUS node is defective or not sending - PROFIBUS node not attached or attached node is not turned on...

  • Page 460

    Troubleshooting PROFIBUS Optical Bus Terminal (OBT) C79000-G8976-C122-02...

  • Page 461

    Technical Specifications Table 7-1 Technical Specifications Technical Specifications Power supply (safety extra–low voltage with reliable isolation, SELV or complying with NEC Class 2) Power consumption at 24 V input Transmission rate Transmission rate setting Mode Bit error rate Input channel 1 to channel 3 Bit length Jitter Output channel 1 to 3...

  • Page 462

    Technical Specifications Wavelength Permitted FO cable attenuation (with link power margin) – for plastic fiber 980/1000 – for PCF fiber 200/230 Transmission distance with 3dB link power margin – with plastic fiber 980/1000 with max. 200 dB/km cable attenuation – for PCF fiber 200/230 with max.

  • Page 463

    Relative humidity Mechanical conditions Vibration during operation Vibration during transportation Type of protection (with external fusing Weight Dimensions Casing material PROFIBUS Optical Bus Terminal (OBT) C79000-G8976-C122-02 Technical Specifications < 95% (no condensation) (IEC 68–2–30) 10 to 58 Hz, 0.075 mm deflection 58 to 150 Hz, 10m/s (1g) acceleration (IEC 68–2–6)

  • Page 464

    Technical Specifications PROFIBUS Optical Bus Terminal (OBT) C79000-G8976-C122-02...

  • Page 465

    Area of application Industrial Conformity Certificates The EU conformity certificates are available for the relevant authorities according to the EU directive and are kept at the following address: Siemens Aktiengesellschaft Bereich Automatisierungstechnik Industrielle Kommunikation (A&D PT2) Postfach 4848 D–90327 Nürnberg...

  • Page 466

    Notes on the CE Label According to the directive on machines, we are obliged to point out that this product is intended solely for installation in a machine. Before the final product can be put into operation, it must be tested for compliance with the directive 89/392/EEC.

  • Page 467

    Praxis”, Hüthig Buch Verlag GmbH, Heidelberg 1994 G. Mahlke, P Gössig: “Lichtwellenleiterkabel: Grundlagen, Kabeltechnik” 3. Auflage, Berlin 1992 SIMATIC NET PROFIBUS is based on the following standards and directives EN 50170–1–2: 1996 General Purpose Field Communication System Volume 2 : Physical Layer Specification and Service Definition...

  • Page 468

    References PROFIBUS Optical Bus Terminal (OBT) C79000-G8976-C122-02...

  • Page 469

    Abbreviations Deutsche Industrie Norm (German industrial standard) Electrostatic discharge European standard Electromagnetic compatibility Fiber–optic IEEE Institute of Electrical and Electronic Engineers ISO/OSI International Standards Organization / Open System Interconnection HCSt HCSt is a registered trademark of Ensign–Bickford Optics Company and stands for “Hard Polymer Cladded Silica Fiber”.

  • Page 470

    Abbreviations PROFIBUS Optical Bus Terminal (OBT) 10-2 C79000-G8976-C122-02...

  • Page 471

    Siemens AG SIMATIC NET A&D PT2 Postfach 4848 D–90327 Nürnberg From: YourName: _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _...

  • Page 472

    Your comments and recommendations will help us to improve the quality and usefulness of our publications. Please take the first available opportunity to fill out this questionnaire and return it to Siemens. Please give each of the following questions your own personal mark within the range from 1 (very good) to 5 (poor).

  • Page 473: H.1 Abbreviations/acronyms

    General Information Abbreviations/Acronyms Aluminum AS–Interface Actuator–Sensor Interface American Wire Gauge Bit Error Rate BFOC Bayonet Fiber Optic Connector Communications Processor CSMA/CD Carrier Sense Multiple Access/Collision Detection Copper Deutsche Industrie Norm (German industrial standard) Distributed (peripheral) I/Os Electrostatic discharge Electronic Industries Association European standard Electromagnetic compatibility Fast Connect...

  • Page 474

    General Information Infrared Local Area Network Light Emitting Diode Multipoint Interface Non Return to Zero Optical Bus Terminal Optical Link Module Operator Panel Polymer Cladded Fiber Polyethylene Programming device PMMA Polymethylmethacrylate PROFIBUS User Organization Polymer Optical Fiber PROFIBUS–DP PROFIBUS distributed I/Os PROFIBUS–PA PROFIBUS Process Automation Physikalisch–Technische Bundesanstalt (German official body) Polyurethane...

  • Page 475

    References Standards, Manuals and Further Information EN 50170–1–2: 1996 General Purpose Field Communication System Volume 2 : Physical Layer Specification and Service Definition PNO Guideline: PROFIBUS Implementation Guide to DIN 19245 Part 3 (Draft) Version 1.0, dated 14.12.1995 PNO Guideline: Fiber Optical Data Transfer for PROFIBUS Version 2.1 dated 12.98 EIA RS–485: 1983...

  • Page 476

    Elektromagnetische Verträglichkeit, Grundlagen und Maßnahmen für die Entwicklung von Systemen, Teil 2: Verkabelung, Dezember 1994 DIN Deutsches Institut für Normung e.V. Berlin SIMATIC S5 Distributed I/O System ET 200 SIEMENS AG Order no. EWA 4NEB 780 6000–01c, Version 4 /10/ SIMATIC S7–400 Programmable Controller...

  • Page 477

    PROFIBUS User Organization e. V., Haid-und-Neu-Str. 7, D-76131 Karlsruhe, Germany Order Numbers The order numbers of the SIEMENS documentation listed above can be found in the catalogs SIMATIC NET Industrial Communication, Catalog IK 10” and ”SIMATIC Programmable Controllers SIMATIC S7 / M7 / C7”.

  • Page 478

    References PROFIBUS Networks SIMATIC NET 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 479

    Please contact your regional training center or the central training center in D 90327 Nürnberg, Germany. Infoline: Tel. +49 180 523 5611 Fax. +49 180 523 5612 Internet: http://www.ad.siemens.de/training E-mail: AD–Training@nbgm.siemens.de SIMATIC Customer Support Hotline Open round the clock, worldwide:...

  • Page 480

    Further Support if you have further questions on SIMATIC NET products, please contact your Siemens representative in your local Siemens office. You will find the addresses listed S in our catalog IK 10 S on the Internet (http://www.ad.siemens.de)

  • Page 481: Glossary

    Glossary Baud rate –> Transmission rate Common transmission path on which all nodes are connected; it has two defined ends. In PROFIBUS, the bus is a twisted-pair cable or a fibre-optic cable. Bus connector Physical connection between the node and LAN cable. In SIMATIC NET, there are bus connectors with and without sockets for the PG with the degree of protection IP 20.

  • Page 482

    Glossary Electromagnetic compatibility (EMC) Electromagnetic compatibility (EMC) deals with all questions of electrical, ma- gnetic and electromagnetic emission and immunity and the functional disturban- ces in electrical devices resulting from these effects. Fiber-optic cable (FO) A fiber-optic cable is a transmission medium in an optical network. FISCO A model (FISCO –...

  • Page 483

    IP 65 Degree of protection complying with DIN 40050: complete protection against touch, protection against the penetration of dust and protection against jet water from all directions. IP 66 Degree of protection complying with DIN 40050: complete protection against touch, protection against penetration of dust and protection against damaging penetration of heavy seas or strong jet water.

  • Page 484

    Glossary Max_T Max_T is a bus parameter and specifies the maximum protocol processing time of the responding node (station delay responder). Min_T Min_T is a bus parameter and specifies the minimum protocol processing time of the responding node (station delay responder). Node A device that can send and receive data on PROFIBUS as a master or slave.

  • Page 485

    PROFIBUS-DP PROFIBUS bus system with the DP protocol. DP stands for distributed periphe- ral I/Os. The main task of PROFIBUS-DP is the fast, cyclic data exchange between the central DP master and the peripheral devices. PROFIBUS-FMS PROFIBUS bus system with the FMS protocol. FMS stands for Fieldbus Mes- sage Specification.

  • Page 486

    A resistor to terminate the LAN cable; terminating resistors are always necessary at the ends of the cable or segment. In SIMATIC NET PROFIBUS, terminating resistors are activated or deactivated in the ³ bus connector or bus terminal or are installed as ³ terminators.

  • Page 487

    Token ring All the masters physically connected to a bus receive the token and pass it on to the next master: the masters are located in a token ring. Token rotation time is the time that elapses between receiving the ³ token and receiving the next token.

  • Page 488

    Glossary PROFIBUS Networks SIMATIC NET Glossary-8 6GK1970-5CA20-0AA1 Release 2 05/2000...

  • Page 489

    Index Block diagram, RS-485 repeater, 5-5 Bus connector, 4-33 connecting to module, 4-46 dimension drawing, F-2 pinout, 4-36 removing, 4-46 setting the terminating resistor, 4-46 technical specifications, 4-35 uses, 4-33 Bus connector 6ES7 972-0B.10 appearance, 4-37 connecting up the LAN cable, 4-38 Bus connector 6ES7 972-0BA30 appearance, 4-40 connecting up LAN cables, 4-40, 4-42...

  • Page 490

    Index Potential differences avoiding, C-11 causes, C-10 Power supply unit, 2-24 complying with FISCO model, 2-24 PROFIBUS terminator definition, 5-15 design, 5-15 dimension drawing, F-6 technical specifications, 5-16 PROFIBUS-PA, Installation Guideline, I-3 RS-485 repeater block diagram, 5-5 connecting the LAN cable, 5-14, 5-17 connecting the power supply, 5-13 definition, 5-2 design, 5-2...

Comments to this Manuals

Symbols: 0

Latest comments:

×

Select the desired size and copy embed code

Copy your embed code and put on your site: