Siemens SIMATIC PC Adapter TS Adapter - Manual (Page 16)

PC/TS Adapter Quick Reference Guide
12
PC/TS Adapter
A5E00078070-02
The RS232 connector has the following pin assignments:
5 1
9 6
Figure 1-10 RS232 Connector (PC-compatible)
Signals
Pin
No. Abbrevia-
tion Description Input/
Output
1 DCD Data Carrier Detect Input
2 RXD Received Data Input
3 TXD Transmitted Data Output
4 DTR Data Terminal Ready Output
5 GND Reference potential (0V)
for all RS232 signals
(Signal Ground)
6 DSR Data Set Ready Input
7 RTS Request to Send Output
8 CTS Clear to Send Input
9 RI Ring Indicator Input
Shield On connector casing*
* The shield is interconnected with the MPI/DP connector via
the adapter casing’s shield and the MPI/DP cable shield.