Siemens S5-135U/155U - Manual (Page 245)

5-105
System Manual
C79000-G8576-C199-06
Wiring of a connecting cable for RTS/CTS flow control
CPU
RxD
7
3 2
7
TxD
Receiver Transmitter
TxD 2 RxD
Receiver Transmitter
Shield 1
RTS
CTS
Housing, GND
1
3
RTS
CTS
Housing, GND
4
5
4
5
CPU
Figure 5-19 Example of a Connecting Cable: CPU - CPU for RTS/CTS Flow Control
CPUs, Memory Cards, Memory Submodules, Interface Submodules