Mitsubishi QJ71E71-B2 PLC Communication Module QJ71E71B2

Description:

The Mitsubishi QJ71E71‑B2 PLC communication module is used in industrial automation systems to provide high‑speed Ethernet communication and networking capabilities for MELSEC PLCs. It is commonly installed in control cabinets and PLC racks to enable Ethernet‑based data exchange, remote access, and integration with supervisory systems such as HMIs and SCADA. Maintenance teams and system integrators use this module for network expansion, remote I/O interfacing, and replacement of legacy communication interfaces.

Applications:

The Mitsubishi QJ71E71‑B2 module is widely used in factory and process automation environments requiring robust Ethernet connectivity and communication performance. It is commonly found in production lines, material handling systems, packaging machinery, building automation, and distributed control systems where real‑time data transfer, diagnostics, and interoperability with higher‑level systems are essential for efficient automated operation.

Technical Specifications:

• Model: QJ71E71‑B2
• Module type: Ethernet communication interface
• Supported protocols: TCP/IP, UDP, and Mitsubishi MC‑Protocol over Ethernet
• Ethernet ports: Dual 10/100 Mbps RJ‑45 connectors
• Network functions: PLC‑to‑PLC, PLC‑to‑HMI, PLC‑to‑SCADA communication
• Indicators: Link, activity, and status LEDs
• Mounting: PLC rack slot mount
• Compatibility: Mitsubishi MELSEC‑Q series PLC platforms
• Communication features: Remote I/O access, data exchange, diagnostics support
• Power: Supplied via PLC backplane
• Designed for: Industrial Ethernet networking and system integration
• Operating temperature: Industrial range

Common Replacements:

• Mitsubishi QJ71E71‑100
• Mitsubishi QJ71E71‑R2
• Omron CS1W‑ETN21