Unitronics I/O Expansion Modules

Unitronics OPLC's can support IO either straight on board, via local expansion units or via a CANbus network (not M90/M91). Several IO modules can be used as either local or remote IO, they all DIN rail mount and will need an expansion adaptor to connect to the OPLC. Expansion adaptors come in three different variants and you need choose only one of them for each OPLC.