Siemens SIMATIC S7 Equipment Manual page 51

Connection
sensors 2 and 4
13
25
14
1
External supply
voltage
1
4
SM 338 Equipment Manual
(4) J31069-D401-U1-A0-7618
Plug connector X2
Sub D plug connector, 25-way socket
Pin
1 -15 V voltage supply (with fuse/floating)
2 Reference potential, voltage supply
3 +15 V voltage supply (with fuse/floating)
4 -
5 Sensor 2: STOP input (RS 422)
6 Sensor 2: START output (RS 422)
7 -
8 Sensor 4: STOP input (RS 422)
9 Sensor 4: START output (RS 422)
10 -
11 -
12 Reference potential, voltage supply
13 +24 V auxiliary voltage (with fuse/floating)
14 -15 V voltage supply (with fuse/floating)
15 Reference potential, voltage supply
16 +15 V voltage supply (with fuse/floating)
17 -
18 Sensor 2: STOP input (RS 422)
19 Sensor 2: START output (RS 422)
20 -
21 Sensor 4: STOP input (RS 422)
22 Sensor 4: START output (RS 422)
23 -
24 Reference potential, voltage supply
25 +24 V auxiliary voltage (with fuse/floating)
Quadruple screw terminal
Pin
1 P24 (input voltage = jumpered with pin 3)
2 M24 (external ground = jumpered with pin 4)
3 P24 (input voltage = jumpered with pin 1)
4 M24 (external ground = jumpered with pin 2)
Function
Function
Appendix
A-5