Siemens ASM 456 Operating Instructions Manual page 28

Connection
4.3 Wiring connection block M12, 7/8"
Connecting up M12, 7/8" connector
1. Press the connector (M12 or 7/8") into the relevant round socket on the connection block.
Make sure the connectors and sockets are properly interlocked (tongue and groove).
2. Use the knurled locking ring to secure the connector.
Figure 4-7
28
Connecting M12, 7/8" connectors
Operating Instructions, 07/2015, J31069-D0162-U001-A6-7618
ASM 456 interface module