Siemens S5-135U/155U - Manual (Page 527)

11-15
System Manual
C79000-G8576-C199-06
Assignments of the CPU front connector (PG interface)
Pin No. Designation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15 Housing/0 V/0V
ext
R x D
VPG + 5 V DC
+ 24 V from bus
0 V/0 V
int
TxD
TxD
Housing/0 V/0V
ext
R x D
24 V ground
20 mA/transmitter
0 V/0 V
int
20 mA/receiver
VPG + 5 V DC
0 V/0 V
int
Connector Assignments