Mitsubishi A1SJ71C24-R2 Communication Module A1SJ71C24R2

Description:

The Mitsubishi A1SJ71C24‑R2 communication module is used in industrial automation systems to enable serial communication between PLCs and peripheral devices such as HMIs, programming consoles, and other controllers. It is commonly installed in Mitsubishi MELSEC‑A and Q series PLC racks to provide RS‑232/RS‑422/RS‑485 interface options. Maintenance teams and system integrators use this module for system networking, remote interfacing, and replacement of failed or legacy communication modules.

Applications:

The Mitsubishi A1SJ71C24‑R2 module is widely used in factory and process automation environments requiring reliable serial communication for data exchange, programming, and device coordination. It is commonly found in machine control panels, material handling systems, packaging lines, CNC integration, and remote diagnostics setups where serial interfacing between PLCs and other devices is essential for control and data transfer.

Technical Specifications:

• Model: A1SJ71C24‑R2
• Function: PLC communication interface module
• Communication type: Serial communication
• Supported protocols: RS‑232C / RS‑422 / RS‑485 (configurable)
• Connector type: DB‑9 or terminal block (platform dependent)
• Baud rate: Up to 115.2 kbps (typical)
• Indicators: Communication status LEDs
• Mounting: PLC rack slot or panel mount
• Compatibility: Mitsubishi MELSEC‑A and Q series PLCs
• Designed for: Serial device interfacing and data exchange
• Operating environment: Industrial temperature range

Common Replacements:

• Mitsubishi A1SJ71C24‑R3 (enhanced serial comm module)
• Omron CJ1W‑SCN41 (serial communication module)
• Allen‑Bradley 1761‑SC (serial communication adapter)