Mitsubishi A42XY Combined Digital I/O Module for MELSEC-F Series

The Mitsubishi A42XY (A42XY) is a combined digital input and output module designed for use with Mitsubishi Electric MELSEC-F (FX) series programmable logic controllers. Engineered to streamline automation systems, this compact expansion unit provides an integrated input and output solution, equivalent in specification to the FX1S-20MT-ESS/UL model. It serves to interface external control devices, sensors, and actuators with the central processing unit, facilitating reliable signal acquisition and switching. This unit features a total of 20 I/O points, divided into 12 digital inputs operating at 24 VDC and 8 digital outputs operating at 24 VDC with positive logic (source configuration). The integrated configuration enables efficient handling of field instrumentation without requiring separate input and output modules, saving space inside control cabinets. Operating within industrial setups, the Mitsubishi A42XY provides dependable signal processing for machine tooling, packaging equipment, material handling lines, and discrete manufacturing processes requiring compact, responsive logic control.