Mitsubishi Electric RJ71GP21-SX MELSEC iQ-R Series CC-Link IE Control Network Module

Description

To establish high-speed, deterministic controller-to-controller communications, the RJ71GP21-SX serves as a reliable optical fiber network module within the Mitsubishi Electric MELSEC iQ-R series platform. This module functions as either a control station or a normal station in a CC-Link IE Control network, utilizing an optical dual-loop topology to ensure high noise immunity, electrical isolation, and stable data transmission over long distances.

Engineered for high-capacity cyclic data transmission and transient communication, the RJ71GP21-SX integrates directly onto the standard iQ-R backplane. The redundant loop architecture provides reliable path-backwards switching in the event of cable breakage or station failure, maintaining link status across remaining nodes without system interruption.

Features

• Configurable as either a Control Station or a Normal Station.
• Optical fiber communication medium offers total immunity to electromagnetic interference (EMI).
• Supports high-speed, large-capacity cyclic transmission alongside on-demand transient messaging.
• Redundant loop configuration prevents communication loss during single-point cable failures.
• Seamless diagnostics and parameter configuration via standard GX Works3 engineering software.

Applications

• Automotive assembly plants and high-speed assembly line synchronization.
• Large-scale distributed plant monitoring and inter-PLC coordination.
• Power generation and substation auxiliary control networks.
• Water and wastewater treatment facilities requiring long-distance link spans.

Technical Specifications

Installation Guidelines

When installing the module, ensure the PLC rack power is completely shut off before mounting the module onto the MELSEC iQ-R base unit. Carefully align the lower module fixing projection with the base unit guide hole, secure it into place, and tighten the module fixing screw to the recommended torque.

Maintain the minimum specified bending radius for the optical fiber cables to prevent signal attenuation or physical fiber damage. Always keep unused optical ports protected with the included dust caps to prevent contamination of the internal optical transceivers.

Compliance and Certifications

• CE Compliant
• UL/cUL Listed
• EAC Mark
• RoHS Compliant