Mitsubishi Electric QJ71E71-100 MELSEC-Q Series Ethernet Module

Description

Facilitating seamless industrial network communications, the QJ71E71-100 serves as a high-performance Ethernet interface module for the Mitsubishi Electric MELSEC-Q Series PLC platform. This module enables direct, reliable connections between Q-Series programmable controllers and host systems, supervisory personal computers, or other Ethernet-enabled automation devices. Operating at speeds up to 100 Mbps, it supports simultaneous open connections and robust, secure data transmission across complex manufacturing cells and plant-wide industrial networks. By offloading processing overhead from the main CPU, it ensures optimized system-level performance.

Features

• Dual-rate transmission support accommodating 10BASE-T and 100BASE-TX interfaces.
• Supports up to 16 simultaneously open connections for parallel host and peer-to-peer communications.
• Compact single-slot footprint designed for seamless integration within standard MELSEC-Q backplanes.
• Direct configuration and parametric setup utilizing standard GX Works2 or GX Developer programming software.
• Front-panel diagnostic LEDs providing immediate physical feedback on link, run, and communication error status.

Applications

• Industrial supervisory control and data acquisition (SCADA) network integration.
• High-speed peer-to-peer inter-PLC data exchange.
• Centralized database connectivity and remote machine telemetry monitoring.
• Manufacturing execution systems (MES) and enterprise resource planning (ERP) system integration.

Technical Specifications

Installation Guidelines

• Always isolate the main power supply to the MELSEC-Q base unit before mounting or removing the communication module to prevent module damage or electric shock.
• Ensure the module is securely seated in the base unit slot and the module fixing screw is tightened to the recommended torque specification.
• Utilize shielded twisted pair (STP) cabling rated Category 5 or higher for 100BASE-TX configurations to maximize noise immunity.
• Route communication cables physically isolated from high-voltage power lines and motor drive wiring to minimize electromagnetic interference (EMI).