![Interface module / [i/o]](https://www.computer-aided-works.de/wp-content/uploads/2021/04/schnittstellenmodul_computer_aided_works.svg "Interface module / [i/o] 1")
Additional connections for PLC control signals
The module [i/o] is a functional extension of the module [operator]. It provides additional connections for PLC control signals in case more sensors are needed than the factory control system alone can handle.
