Industrial field controlling means based on optical communication

The utility model provides an industrial field controlling means based on optical communication, including PLC controller, central controller and a plurality of field control ware, the PLC controller with the central controller communication is connected, central controller include first light communication module the field control ware includes second light communication module and third light communication module, the second light communication module of field control ware establishs rather than the third light communication module of higher level's field control ware and connects, perhaps with first light communication module establishs and connects, the third light communication module of field control ware connects rather than the second light communication module foundation of the field control ware of subordinate, this kind of industrial field controlling means based on optical communication simple structure, and borrowed light communication technology improves control system's signal interference kill