Siemens S5-135U/155U - Manual (Page 238)

5-98
System Manual
C79000-G8576-C199-06
Standard cables for connecting the PG submodule in the CPU to the PG are
available from Siemens in various lengths, up to 1000 m.
Order numbers and lengths can be found in the ordering information.
Connecting cable: CPU - PG
Housing, GND
1 Shield
Housing, GND
8
24
25
9
2
+ RxD
– RxD
Receiver
10
22
+ TxD 6
12
23
–12V
Transmitter
20
6
+12V
– TxD
Transmitter
7
8
21
Receiver
–12V
+12V
17
4
3
2
+ 20 mA
+ TxD
– TxD
– 20 mA
+ 20 mA
+ RxD
– RxD
– 20 mA
K1
K2
K3
Transmission
Rate Setting
CPU SI1 or
SI2 with PG Submodule
PG 675/685 or
Adapter to PG 7xx
Figure 5-13 PG Submodule: Standard Connecting Cable
Standard
Connecting Cable
for the PB
Submodule
CPUs, Memory Cards, Memory Submodules, Interface Submodules