13-6
OP27, OP37 Equipment Manual
Release 05/99
The IF1B interface can be configured by using the DIL switches, located
beside the 9–pin Sub-D connector. This interchanges the RS422 receive data
and the RTS signal. By default, the RTS signal is not required by the commu-
nication peer.
The table shows the permissible DIL switch settings.
Communication
Switch Setting
Communication
Switch Setting
OP
PLC
RS422/RS485
1
2
3
4
ON
OFF
PLC
PPI/MPI/PROFIBUS
OP
RTS on Pin 4
RTS on Pin 9 (as PU)
No RTS on connector
(default)
1
2
3
4
1
2
3
4
1
2
3
4
ON
OFF
ON
OFF
ON
OFF
PLC
PPI/MPI
Standard cable
OP
ON
OFF
1
2
3
4
Configure interface
IF1B
Electrical Installation
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