The CQM1-CIF02 is a serial communication interface module manufactured by Omron, which allows for communication between a personal computer and a CQM1 PLC. Here is some information related to the CQM1-CIF02 module: Pinout: The CQM1-CIF02 module has a 9-pin D-sub connector on one end for connection to a PC and a mini-DIN connector on the … Continue reading CQM1-CIF02