Using IO‑Link technology, it is basically possible to connect standard sensors to IO‑Link masters. However, connecting standard sensors directly to the IO‑Link master does not exploit the full potential of IO‑Link.

The solution lies in the technology of the IO‑Link modules. Their use is a more economically attractive solution in comparison to the direct connection of a sensor.

IO‑Link input modules are a sensible addition to the ET 200 distributed IOs. The IO‑Link input module technology enhances IO‑Link via a pure point-to-point cable connection towards decentralized structures. The maximum cable length of an IO‑Link connection between an IO‑Link module and an IO‑Link master is 20 m. The use of sensor boxes with accordingly complex and error-prone wiring is no longer necessary.

Transmission of parameter and diagnostic signals

The IO‑Link input modules also offer the possibility of transmitting parameters and diagnostic signals. This enables the inputs of modules to be parameterized as NC contacts or NO contacts through IO‑Link, for example. An overload or short circuit in the sensor supply is signaled to the control system through the IO‑Link master.

M8 and M12 terminals

M8 and M12 terminals are available for connecting the sensors. Connection to the IO‑Link master is made using a standard M12 connecting cable.