Siemens COMBIMASTER Reference Manual page 47

Parameter read access is permanently
enabled, allowing continuous read out of drive
data, diagnostics, fault messages etc. A
visualisation system can thus be realised with
minimal effort.
The PROFIBUS cable is connected to the 5-
way miniature circular socket on the side of the
PROFIBUS Module, via a special 'T' connector
which fits to the edge of the module. This T
connector allows the PROFIBUS module to be
disconnected from the bus in the event of a
fault, without breaking the PROFIBUS link.
The pin designation of the circular connectors
is given below.
1
2
3
Socket (Pins)
Figure 12 Pin Arrangement For The 5-Way
Circular PROFIBUS Connector
Note that the socket is used on the PROFIBUS
module, and the cable links. The plug is used
on the interconnecting cables.
Terminal
1
2
3
4
5
Table 4: Pin Assignment for the 5-way
Circular PROFIBUS Connector
Data transfer rate
(Kbit/s)
9.6
19.2
93.75
187.5
500
1500
12000
Table 5: Cable Lengths
A segment can be extended by using RS
485 repeaters.
Recommendation: RS 485 repeater
(Order No.: 6ES7 972-0AA00-0XA0).
46
5 1
5
4
4
3
Plug (Holes)
Function, information
+5V
N (-)
0V
P (+)
No connection
Max. cable length
of a segment (m)
1200
1200
1200
1000
400
200
100
COMBIMASTER & MICROMASTER Integrated
For reliable operation of the serial bus system,
the cable must be terminated at both ends
using terminating resistors. For operation at
12MBd, cables must be terminated in
connectors with a built-in damping network
(built into T Connector). Additionally, for
12MBd operation, no stub length from the main
bus cable is allowed.
Suitable SINEC-L2 DP connectors and cable
for reliable operation up to 12MBd are detailed
above.
A floppy disk is supplied with the PROFIBUS
module containing the handbook and two data
files for configuring the relevant PLC system.
Quick Guide to Setting Up PROFIBUS
Communications
• The bus cable between the master device
and the drive must be connected correctly.
2
This includes the necessary termination
resistors and (for 12MBd) the terminating
network.
• The bus cable must be screened and the
screen must be connected to the housing of
the cable connector.
• The PROFIBUS master must be configured
correctly so that communications can be
realized with a DP slave using PPO type 1
or PPO type 3 (only PPO type 1, if the PPO
type cannot be configured via remote
operator control).
• When using COM ET software with a
SIMATIC S5, the correct type description
file must be used, so that an IM 308B/C can
be configured as bus master. When using
the Simatic Manager for an S7, the Object
Manager must be loaded.
• The bus must be operational (for a
SIMATIC module, the operator control
panel switch must be set to RUN).
• The bus baud rate must not exceed 12
MBd.
• The PROFIBUS Module must be correctly
fitted to the inverter and the inverter must
be powered up.
• The slave address for the drive (parameter
P918) must be set so that it corresponds to
the slave address configured at the
PROFIBUS master, and must be uniquely
defined on the bus.
Siemens plc. 1999
©
REFERENCE MANUAL
| G85139-H1731-U300-D2