
C1120 S5 to II/O-Lightbus Interface Beckhoff II/O-Lightbus System
Page 52 of 52 Version 2.1 Date 27.06.97
5 C1120 Serial Port Pinout
Pinout of RS232 C / current loop port
(9-pin SUB-D connector on front of C1120)
Pin Signal Port
1
TXD RS232 C COM2:
2
TXD RS232 C COM1:
3
RXD RS232 C COM1:
4
RXD RS232 C COM2:
5
Signal
GND
-
6
TXD 20mA+ COM1:
7
TXD 20mA- COM1:
8
RXD 20mA+ COM1:
9
RXD 20mA- COM1:
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