Description of the device   
2.3 Terminals 
  SCALANCE M874, M876 
20  Operating Instructions, 08/2018, C79000-G8976-C331-08 
 
The device has the following terminal strips. 
 
 
Connectors and terminal markings 
 Input for the power supply
Terminal strip with five screw connectors 
 
② Functional ground   
 Digital input 
 
Terminal strip with two screw connectors 
 Digital output 
 
Terminal strip with two screw connectors