B-2
OP27, OP37 Equipment Manual
Release 05/99
Pin assignment of the 9–pin Sub-D socket
(Configuration via DIL switch, see Chapter 13.1.2):
Pin
General
PROFIBUS-DP
MPI
RS422
RS485
1
2
3
Data B
TxD (B)
Data B
4
RxD (B)
5
GND (floating )
6
+5 V (floating )
7
8
Housing
Data A
TxD (A)
Data A
9
RxD (A)
Pin assignment of the 15–pin Sub–D socket:
Pin
General
TTY
RS42
RS485
1
Housing
2
RxD–
3
RxD (B)
4
TxD (B)
Data B
5
RxD (A)
6
TxD+
7
TxD–
8
Housing
9
RxD+
10
TxD (A)
Data A
11
+24 V
12
GND (5 V)
13
14
+5 V
15
GND (24 V)
IF1B
IF3 (TP37)
only
Interface Assignments
5
1
9
6
8
1
15
9
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