Siemens ET 200pro Operating Instructions Manual page 94

Connection
4.7 Connecting the Interface Module to the CM IM DP M12, 7/8" Connection Module
Connecting M12 and 7/8" cable connectors
1. Plug the M12 and 7/8" cable connectors into the corresponding circular socket
connectors of the CM IM M12, 7/8" connection module. Ensure that the locking
mechanism between the connector and socket is properly applied.
2. Tighten the knurled screws of the connectors (torque = 1.5 Nm).
Note
Removal of the 7/8" cable connector interrupts the supply to downstream modules.
Sealing unused sockets
Always close all unused sockets using M12 and 7/8" caps in order to achieve degree of
protection IP65, IP66 or IP67.
94
NOTICE
Removing the 7/8" cable connector
It is not permissible to remove the 7/8" cable connectors while ET 200pro is in operation!
Always switch off the 1L+ electronics/encoder supply and the 2L+ load voltage supply
before you pull or plug the 7/8" cable connector.
ET 200pro distributed I/O system
Operating Instructions, 03/2013, A5E00335544-08