Siemens S5-135U/155U - Page 530

11-18
System Manual
C79000-G8576-C199-06
Assignments of the front connector for the coordinators
Pin No. Designation
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
Housing/0 V/0V
ext
Receiver TTY(-)
Private line
+24 V
Private line
Transmitter TTY (+)
Transmitter TTY (-)
Housing/0 V/0V
ext
Receiver TTY (+)
24 V ground (20 mA (-) current sources)
20 mA (+) current source
Private line
20 mA (+) current source
Private line
Private line
Connector Assi
g
nments