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System Manual Edition 05/2005
RFID-SYSTEMS
SIMATIC RF 300
simatic sensors

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  • Page 1

    System Manual Edition 05/2005 RFID-SYSTEMS SIMATIC RF 300 simatic sensors...

  • Page 3

    Introduction Safety information System overview SIMATIC RF 300 system planning RFID systems RF 300 Readers Transponder/tags System Manual Communication modules Accessories Appendix Edition 05/2005...

  • Page 4

    Trademarks All names identified by ® are registered trademarks of the Siemens AG. The remaining trademarks in this publication may be trademarks whose use by third parties for their own purposes could violate the rights of the owner.

  • Page 5: Table Of Contents

    Table of contents Introduction............................. 1-1 Navigating in the system manual ....................1-2 Safety information........................... 2-1 System overview............................. 3-1 RFID systems..........................3-1 RF 300 ............................3-2 3.2.1 RF 300 application areas ......................3-2 3.2.2 RFID components and their function ..................3-3 3.2.3 Technical data..........................

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    Table of contents Readers ..............................5-1 RF 310-R............................ 5-2 5.1.1 Features ............................. 5-2 5.1.2 Indicators............................ 5-2 5.1.3 Transmission window......................... 5-3 5.1.4 Metal-free area........................... 5-3 5.1.5 Minimum distance between several RF 310-R units ..............5-4 5.1.6 RF 310-R field data ........................5-4 5.1.7 Pin assignment of the IQ-Sense interface .................

  • Page 7: Readers

    Table of contents Tables Table 4-1 Reduction of field data by metal (in %): Transponder and RF 310-R........4-20 Table 4-2 Interference sources: origin and effect ..................4-30 Table 4-3 Causes of coupling paths......................4-31 Table 5-1 RF 310-R indicators ........................5-2 Table 5-2 RF 310-R pin assignment ......................

  • Page 8

    Table of contents RF 300 System Manual, 05/2005, (4)J31069 D0166-U001-A1-7618, --...

  • Page 9: Introduction

    Scope of validity of this document This documentation is valid for all supplied variations of the SIMATIC RF 300 system and describes the state of delivery as of May 2005. Conventions The following terms/abbreviations are used synonymously in this document: •...

  • Page 10: Navigating In The System Manual

    System overview Overview of all RF identification systems, system overview of SIMATIC RF 300 RFID system planning Information about possible applications of SIMATIC RF 300, support for application planning, tools for finding suitable SIMATIC RD 300 components.

  • Page 11: Safety Information

    Safety information Caution Please observe the safety instructions on the back cover of this documentation. SIMATIC RFID products comply with the salient safety specifications to IEC, VDE, EN, UL and CSA. If you have questions about the admissibility of the installation in the designated environment, please contact your service representative.

  • Page 12

    Safety information System expansion Only install system expansion devices designed for this device. If you install other upgrades, you may damage the system or violate the safety requirements and regulations for radio frequency interference suppression. Contact your technical support team or your sales outlet to find out which system upgrades are suitable for installation.

  • Page 13: System Overview

    System overview RFID systems RFID systems from Siemens control and optimize material flow. They identify reliably, quickly and economically, are insensitive to contamination and store data directly on the product. Identification system Frequency Max. range Max. Data Max. Special features...

  • Page 14: Rf 300 Application Areas

    3.2 RF 300 RF 300 SIMATIC RF 300 is an inductive identification system specially designed for use in industrial production for the control and optimization of material flow. Thanks to its compact components it is particularly suited to small assembly lines and conveyor systems with restricted space for installation.

  • Page 15: Rfid Components And Their Function

    A communication module (interface module) is used to integrate the RF identification system in modules PLC/automation systems. In the case of SIMATIC RF 300, the reader is connected to an S7 automation system either via the 8xIQ-Sense module or an equivalent MOBY interface module (e.g. ASM 475).

  • Page 16: Technical Data

    System overview 3.2 RF 300 3.2.3 Technical data RFID system RF 300 Type Inductive identification system for industrial applications Transmission frequency data/energy 13.56 MHz Memory capacity 20 bytes up to 64 KB user memory (r/w) 4 bytes fixed code as serial number (ro) Memory type EEPROM / FRAM Write cycles...

  • Page 17: Rf 300 System Planning

    RF 300 system planning Fundamentals of application planning Assess your application according to the following criteria, in order to choose the right SIMATIC RF 300 components: • Transmission distance (read/write distance) • Tracking tolerances • Static or dynamic data transfer •...

  • Page 18: Transmission Window And Read/write Distance

    RF 300 system planning 4.1 Fundamentals of application planning 4.1.1 Transmission window and read/write distance The reader generates an inductive alternating field. The field is strongest near to the reader. The strength of the field decreases in proportion to the distance from the reader. The distribution of the field depends on the structure and geometry of the antennas in the reader and transponder.

  • Page 19: Width Of The Transmission Window

    RF 300 system planning 4.1 Fundamentals of application planning From the diagram above, it can also be seen that operation is possible within the area between Sa and Sg. The active operating area reduces as the distance increases, and shrinks to a single point at distance Sg. Only static mode should thus be used in the area between Sa and Sg.

  • Page 20: Permissible Directions Of Motion Of The Transponder

    RF 300 system planning 4.1 Fundamentals of application planning 4.1.4 Permissible directions of motion of the transponder Active area and direction of motion of the transponder The transponder and reader have no polarization axis, i.e. the transponder can come in from any direction, be placed at any position, and cross the transmission window.

  • Page 21: Operation In Static And Dynamic Mode

    RF 300 system planning 4.1 Fundamentals of application planning 4.1.5 Operation in static and dynamic mode Operation in static mode If working in static mode, the transponder can be operated up to the limit distance (S ). The transponder must then be positioned exactly over the reader: Figure 4-3 Operation in static mode Operation in dynamic mode...

  • Page 22: Dwell Time Of The Transponder

    RF 300 system planning 4.1 Fundamentals of application planning 4.1.6 Dwell time of the transponder The dwell time is the time in which the transponder dwells within the transmission window of a reader. The reader can exchange data with the transponder during this time. The dwell time is calculated thus: ⋅...

  • Page 23: Communication Between Communication Module, Reader And Transponder

    RF 300 system planning 4.1 Fundamentals of application planning 4.1.7 Communication between communication module, reader and transponder Communication with RF 310-R Communication between the communication module (IQ Sense), RF 310-R reader and transponders takes place in fixed telegram cycles. 3 cycles of approximately 3 ms are always needed for the transfer of a read or write command.

  • Page 24

    RF 300 system planning 4.1 Fundamentals of application planning Time constants K and t Word K (ms) (ms) Command Word Read Write (EEPROM area) Write (FRAM area) The table of time constants applies to every command. If a user command consists of several subcommands, the above t formula must be applied to each subcommand.

  • Page 25: Calculation Example

    RF 300 system planning 4.1 Fundamentals of application planning 4.1.8 Calculation example A transport system moves pallets with transponders at a maximum velocity of V = 0.14 TPDR m/s. The following RFID components were chosen: • 8xIQ-Sense module • RF 310-R reader •...

  • Page 26

    RF 300 system planning 4.1 Fundamentals of application planning Determine tolerance of pallet transport height Figure 4-5 Tolerance of pallet transport height Determine tolerance of pallet side transport Figure 4-6 Tolerance of pallet side transport Minimum distance from reader to reader Refer to the field data of the reader for this value.

  • Page 27

    RF 300 system planning 4.1 Fundamentals of application planning Calculation of the maximum amount of user data in dynamic mode Step Formula/calculation Calculate dwell time of the Refer to the "Field data of all transponders and readers" table for value L. transponder Value V = 0.14m/s...

  • Page 28: Field Data Of Transponders And Readers

    4.2 Field data of transponders and readers Field data of transponders and readers The following table shows the field data for all SIMATIC RF 300 components of transponders and readers. It facilitates the correct selection of a transponder and reader.

  • Page 29: Impact Of The Data Volume On The Transponder Speed With Rf 310-r (iq-sense)

    RF 300 system planning 4.3 Impact of the data volume on the transponder speed with RF 310-R (IQ-Sense) Impact of the data volume on the transponder speed with RF 310-R (IQ-Sense) The curves shown here show the relationship between the speed of the RF 320 and RF 340 transponders and the volume of data transferred.

  • Page 30: Installation Guidelines

    RF 300 system planning 4.4 Installation guidelines Installation guidelines 4.4.1 Overview The transponder and reader are inductive devices. Any type of metal, in particular iron and ferromagnetic materials, in the vicinity of these devices will affect their operation. Some points need to be considered during planning and installation if the values described in the "Field data"...

  • Page 31: Reduction Of Interference Due To Metal

    RF 300 system planning 4.4 Installation guidelines 4.4.2 Reduction of interference due to metal Interference due to metal rack Problem A metal rack is located above the transmission window of the reader. This affects the entire field. In particular, the transmission window between reader and transponder is reduced.

  • Page 32

    RF 300 system planning 4.4 Installation guidelines Flush-mounting Flush-mounting of transponders and readers Problem Flush-mounting of transponders and readers is possible in principle. However, the size of the transmission window is significantly reduced. The following measures can be used to counteract the reduction of the window: Remedy: Enlargement of the non-metallic...

  • Page 33

    RF 300 system planning 4.4 Installation guidelines Mounting of several readers on metal frames or racks Any reader mounted on metal couples part of the field to the metal frame. There is normally no interaction as long as the minimum distance D and metal-free areas a, b are maintained. However, interaction may take place if an iron frame is positioned unfavorably.

  • Page 34: Effects Of Metal On Different Transponders And Readers

    RF 300 system planning 4.4 Installation guidelines 4.4.3 Effects of metal on different transponders and readers Mounting different transponders on metal or flush-mounting Not all transponders can be mounted directly on metal. For more information, please refer to the descriptions of the individual transponders in the relevant sections. The following section illustrates various possibilities for mounting, allowing for the effect of metal on the particular transponder.

  • Page 35: Impact On The Transmission Window By Metal

    RF 300 system planning 4.4 Installation guidelines Transponders which cannot be mounted directly on metal Any transponder whose operation is interrupted by direct contact with metal cannot be mounted directly on metal. The applicable minimum distance to metal must be maintained for the relevant transponder. Mounting of a transponder on metal with a non-metallic spacer If the minimum guide values (a, h) are...

  • Page 36: Rf 340-t

    RF 300 system planning 4.4 Installation guidelines The impact of metal on the field data (S , L, B) is shown in tabular and graphical format in this section. The values in the table describe the reduction of the field data in % with reference to non-metal (100 % means no impact).

  • Page 37: Chemical Resistance Of The Transponders

    RF 300 system planning 4.5 Chemical resistance of the transponders Chemical resistance of the transponders The following table provides an overview of the chemical resistance of the data memories made of glass-fiber-reinforced epoxy resin (E624). The plastic housing has a notably high resistance to chemicals used in automobiles (e.g.: oil, grease, diesel fuel, gasoline, etc,);...

  • Page 38

    RF 300 system planning 4.5 Chemical resistance of the transponders Concentration 20°C 40°C 60°C Chlorobenzene Chloride (ammonium, Na.a.) Chloroform Chlorophyl Chlorosulphonic acid 100 % Chlorine water (saturated solution) Chromate (K–, Na.a.) Up to 50 % Chromic acid Up to 30 % Chromosulphuric acid Citric acid Cyanamide...

  • Page 39

    RF 300 system planning 4.5 Chemical resistance of the transponders Concentration 20°C 40°C 60°C Mineral oils Nitrate (ammonium, K.a.) Nitroglycerine Oxalic acid Phenol Phosphate (ammonium, Na.a.) Phosphoric acid 50 % 85 % Propanol Nitric acid 25 % Hydrochloric acid 10 % Brine Sulphur dioxide 100 %...

  • Page 40

    RF 300 system planning 4.5 Chemical resistance of the transponders RF 340-T transponder The following table gives an overview of the chemical composition of the data memories made from polyamide 12. The plastic housing has a notably high resistance to chemicals used in automobiles (e.g.: oil, grease, diesel fuel, gasoline, etc,);...

  • Page 41

    RF 300 system planning 4.5 Chemical resistance of the transponders Concentration 20°C 60 °C Hydrochloric acid Sulphur dioxide Sulphuric acid Hydrogen sulphide Carbon tetrachloride Toluene Detergent High Plasticizer Abbreviations Resistant Virtually resistant Partially resistant Less resistant Not resistant Aqueous solution c.s.

  • Page 42: Emc Guidelines

    RF 300 system planning 4.6 EMC Guidelines EMC Guidelines 4.6.1 Overview These EMC Guidelines answer the following questions: • Why are EMC guidelines necessary? • What types of external interference have an impact on the control system? • How can interference be prevented? •...

  • Page 43: Definition

    RF 300 system planning 4.6 EMC Guidelines 4.6.2 Definition The increasing use of electrical and electronic devices is accompanied by: • Increasing density of components • Increasing power electronics • Increasing switching rates • Lower power consumption of components The higher the degree of automation, the greater the risk of interaction between devices. Electromagnetic compatibility (EMC) is the ability of an electrical or electronic device to operate satisfactorily in an electromagnetic environment without affecting or interfering with the environment over and above certain limits.

  • Page 44: Basic Rules

    RF 300 system planning 4.6 EMC Guidelines 4.6.3 Basic rules It is often sufficient to follow a few elementary rules in order to ensure electromagnetic compatiblity (EMC). The following rules must be observed when erecting a control cabinet: Shielding by enclosure •...

  • Page 45: Propagation Of Electromagnetic Interference

    RF 300 system planning 4.6 EMC Guidelines Line and signal filter • Use only line filters with metal housings • Connect the filter housing to the cabinet chassis using a large-area low-HF-impedance connection. • Never fix the filter housing to a painted surface. •...

  • Page 46

    RF 300 system planning 4.6 EMC Guidelines Interference sources In order to achieve a high level of electromagnetic compatibility and thus a very low level of disturbance in a plant, it is necessary to recognize the most frequent interference sources. These must then be eliminated by appropriate measures.

  • Page 47

    RF 300 system planning 4.6 EMC Guidelines Coupling paths A coupling path has to be present before the disturbance emitted by the interference source can affect the system. There are four ways in which interference can be coupled in: Figure 4-9 Ways in which interference can be coupled in When RFID modules are used, different components in the overall system can act as a coupling path:...

  • Page 48: Cabinet Configuration

    RF 300 system planning 4.6 EMC Guidelines 4.6.5 Cabinet configuration The influence of the user in the configuration of an electromagnetically compatible plant encompasses cabinet configuration, cable installation, ground connections and correct shielding of cables. Note For information about electromagnetically compatible cabinet configuration, please consult the installation guidelines for SIMATIC PLCs.

  • Page 49

    RF 300 system planning 4.6 EMC Guidelines Prevention of interference by optimum configuration Good interference suppression can be achieved by installing SIMATIC PLCs on conducting mounting plates (unpainted). When setting up the control cabinet, interference can be prevented easily by observing certain guidelines. Power components (transformers, drive units, load power supply units) should be arranged separately from the control components (relay control unit, SIMATIC S7).

  • Page 50

    RF 300 system planning 4.6 EMC Guidelines Filtering of the supply voltage External interference from the mains can be prevented by installing line filters. Correct installation is extremely important, in addition to appropriate dimensioning. It is essential that the line filter is mounted directly at the cabinet inlet. As a result, interference is filtered promptly at the inlet, and is not conducted through the cabinet.

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