Mitsubishi Electric

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

SKU RJ71GP21-SX

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Mitsubishi Electric

  • Product No.: RJ71GP21-SX

  • Country of origin:United States

  • Product Type: Communication Modules

  • Payment: T/T, Western Union

  • Weight: 180g

  • Shipping port: Xiamen

  • Warranty: 12 months

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

ManufacturerPart Number / ModelSeriesNetwork TypeStation TypePhysical Transmission MediumWidthHeightDepthWeight
Mitsubishi Electric
RJ71GP21-SX (Manufacturer Code: 279571)
MELSEC iQ-R Series
CC-Link IE Control Network
Control Station / Normal Station (Configurable)
Optical Fiber Cable
27.8 mm
98 mm (106 mm with connector interfaces)
110 mm
0.18 kg

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

FAQ

What is the primary function of the Mitsubishi RJ71GP21-SX module?

The RJ71GP21-SX is a CC-Link IE Control network module that enables high-speed, deterministic controller-to-controller communication across MELSEC iQ-R series PLCs.

What type of cabling does the RJ71GP21-SX require?

This module uses dual-loop optical fiber cabling, which provides complete immunity to electromagnetic interference and supports long-distance installations.

Can this module be configured as both a control and a normal station?

Yes, the RJ71GP21-SX can be software-configured to function as either the network Control Station or a standard Normal Station.

Does the RJ71GP21-SX support redundant loop architectures?

Yes, it supports an optical dual-loop network configuration, which allows communication to continue via loopback functionality if a cable break occurs.

View all FAQs →

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Shipping & Returns

Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
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Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
United States

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