Mitsubishi A1SJ71QC24N-R2 Serial Communication Module for MELSEC-A Series

The Mitsubishi A1SJ71QC24N-R2 is a dedicated serial communication interface module designed for integration into Mitsubishi MELSEC-A series programmable logic controller systems. Designed for installation on standard system baseplates and rack assemblies, this module facilitates reliable data exchange between the host controller and external serial devices. The unit is functionally equivalent to the A1SJ71QC24N1R2 and provides point-to-point communication across automated industrial environments. Featuring an integrated 9-pin male D-sub connector, the module supports standard RS-232 serial communication protocols. It is commonly deployed to establish communication channels with human-machine interfaces, supervisory control computers, barcode readers, serial printers, and peripheral measurement instruments. By offloading serial data transmission and protocol handling from the main central processing unit, the unit preserves system processing speed and helps maintain stable communication cycles across factory automation and process control lines. Its robust construction ensures dependable operational performance within demanding industrial automation enclosures.