Mitsubishi Electric QJ71E71-B2 PLC Communication Module

The Mitsubishi Electric QJ71E71-B2 PLC communication module delivers high-speed Ethernet networking for MELSEC-Q PLCs, enabling Ethernet-based data exchange and remote access within control cabinets and PLC racks. As an Ethernet communication interface, it provides dual 10/100 Mbps RJ-45 ports and supports TCP/IP, UDP, and Mitsubishi MC-Protocol over Ethernet for PLC-to-PLC, PLC-to-HMI, and PLC-to-SCADA communication. Mounted in a PLC rack slot and powered via the backplane, it offers Link, activity, and status LEDs, with remote I/O access, data exchange, and diagnostics support in an industrial temperature range. Compatible with Mitsubishi MELSEC-Q series platforms and designed for factory and process automation, it is commonly used for network expansion and integration with higher-level systems; common replacements include QJ71E71-100, QJ71E71-R2, and Omron CS1W-ETN21.