Serial Communication - Siemens 7XV5673 Device Manual

8.1.2

Serial Communication

As per order reference, the SICAM I/O Unit has a serial FO or RS485 interface and can therefore communicate
in series with peripheral devices via Modbus RTU. The serial interface supports:
• Transfer of messages
• Time Synchronization
• Data exchange between 2 SICAM I/O Units via Modbus RTU as point-to-point I/O mirror
Data of the RS485 Interface when Using the Modbus RTU Protocol
The RS485 interface comes with the following parameters set by the manufacturer:
• Bus protocol:
• Device address:
• Baud rate:
• Parity:
• Access rights:
• Communication supervision time:
You can modify these parameters during the parameterization, see chapter 6.3.3.8.
The connection is a 9 pin D-sub connector plug.
Data of the FO Interface when Using the Modbus RTU Protocol
The FO interface comes with the following parameters set by the manufacturer:
• Bus protocol:
• Device address:
• Baud rate:
• Parity:
• Access rights:
• Communication supervision time:
• Fiber optical idle state:
You can modify these parameters during the parameterization, see chapter 6.3.3.8.
The connection is a ST connector BFOC/2.5 for sending and receiving, 820 nm.
SICAM I/O Unit, 7XV5673, Device Manual
E50417-H1040-C484-A3, Edition 05.2012
Modbus RTU
1
19 200 bit/s
Even
Full
1 min
Modbus RTU
1
19 200 bit/s
Even
Full
1 min
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8 Communication
8.1 Communication Features
137