Available. The Mitsubishi A1SJ71UC24-R4 is a computer link module designed for the MELSEC-A series programmable logic controllers (PLCs). It facilitates reliable RS-422/RS-485 serial communication between the PLC CPU and external devices, supporting both dedicated and non-procedural bidirectional protocols. This module is ideal for integrating devices such as HMIs, barcode scanners, printers, and sensors into industrial automation systems. Key features include a backplane/rack mounting design with a 2-piece terminal block, transmission speeds ranging from 300 to 19,200 bps, and a maximum transmission distance of 500 meters. The module's compact dimensions (130 mm x 34.5 mm x 93.6 mm) and lightweight design (0.25 kg) ensure easy installation and minimal space usage. For comprehensive technical details and installation guidelines, refer to the official Mitsubishi Electric documentation.