8 Communication
8.1 Communication Features
137
SICAM I/O Unit, 7XV5673, Device Manual
E50417-H1040-C484-A3, Edition 05.2012
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:
Modbus RTU
•
Device address:
1
•
Baud rate:
19 200 bit/s
•
Parity:
Even
•
Access rights:
Full
•
Communication supervision time:
1 min
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:
Modbus RTU
•
Device address:
1
•
Baud rate:
19 200 bit/s
•
Parity:
Even
•
Access rights:
Full
•
Communication supervision time:
1 min
•
Fiber optical idle state:
Light off
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.
MAN_SICAM_IO-Unit_7XV5673_US.book Page 137 Thursday, May 10, 2012 10:59 AM