The system's modularity is also reflected in its support of numerous fieldbus systems. Depending on the application, it is possible to choose between fieldbus couplers for different protocols. This enables the system to easily accommodate individual customer requirements without major modifications. These factors minimize handling errors and ensure the long-term protection of system investments.

Since 1996, Wago manufactures the closest couplers. This is a widespread solution when using the main controllers of different manufacturers that work with remote WAGO stations. Using this solution, the programmer continues to work in a familiar environment, he does not need to learn a new program, remote stations are much cheaper than controllers, they are connected to the protocol, so the number of wires is reduced, depending on the protocol used, the station can be set far enough away the main controller, there is no interference in the existing I/O system, since the remote station works separately, most of the existing protocols are supported, the configurable files are free available on the WAGO page. This architecture allows optimal distribution of signal collection and management, without dragging all the wires into the main panel, decentralized management can be implemented.

Visually deleted terminals are no different from controls, so the functionality can be deduced from the code: 750 is the start of the I / O code Benra WAGO, the number under the dash indicates its functionality. The number "8" means that it is a controller (PLC), the number "3" is a remote connector, for example 750-352 is a remote station, and 750-8207 is a controller.