This module is designed for use with any CPU unit belonging to Omron’s highly successful CJ1 series of programmable logic controllers. It uses a separate communication processor to guarantee reliable, high-level performance independent of the PLC program or its CPU speed. As it is transparent to Omron’s own FINS communication protocol, the PROFINET IO controller also provides a communication channel so that legacy devices or existing software tools can be used to exchange data with the PLC CPU through the PROFINET controller.