Mitsubishi Electric RJ71C24-R4 MELSEC iQ-R Serial Communication Module

SKU RJ71C24-R4

Disponibile

12-month warranty
Free returns within 30 days

Manufacturer: Mitsubishi Electric
Product No.: RJ71C24-R4
Origin United States
Product Type: Communication Modules
Payment: T/T, Western Union
Weight: 0.13 kg
Dimensions: 27.8 mm x 106 mm x 110 mm
Shipping port: Xiamen
Warranty: 12 months

Product Description

Description

Designed for seamless integration within the MELSEC iQ-R Series programmable controller platform, the RJ71C24-R4 serial communication module provides dual-channel RS-422/RS-485 serial interfaces. This module enables direct data transmission between the PLC system and peripheral devices such as human-machine interfaces (HMIs), frequency inverters, temperature controllers, and barcode readers. By supporting standard protocols including MC protocol, Modbus/RTU, and non-procedural communications, the RJ71C24-R4 facilitates highly reliable serial networking in industrial environments without requiring complex transmission programs.

Features

Dual-channel configuration featuring two dedicated RS-422/RS-485 serial ports.
Direct installation onto the MELSEC iQ-R series main base unit.
Supports MC protocol, Modbus/RTU master/slave, and bidirectional non-procedural communication.
Simplifies programming through pre-defined protocol support and dedicated PLC instructions.
Provides robust diagnostics and monitoring capabilities through GX Works3 engineering software.

Applications

Factory automation and control systems.
SCADA and HMI monitoring network integration.
Distributed peripheral device control (Inverters, Sensors, and Actuators).
Legacy serial-to-PLC communication bridging.

Technical Specifications

Manufacturer	Mitsubishi Electric
Part Number / Model	RJ71C24-R4
Series	MELSEC iQ-R
Module Type	Serial Communication Module
Communication Interface	2 channels x RS-422/RS-485
Dimensions (W x H x D)	27.8 mm x 106 mm x 110 mm
Weight	0.13 kg

Connections and Interfaces

Channel	Interface Type	Supported Protocols
Channel 1	RS-422/RS-485 (2-wire or 4-wire connection)	MC Protocol, Modbus/RTU, Non-procedural
Channel 2	RS-422/RS-485 (2-wire or 4-wire connection)	MC Protocol, Modbus/RTU, Non-procedural

Installation Guidelines

Ensure the system base unit power supply is switched completely off before mounting or removing the module.
Secure the module firmly onto the MELSEC iQ-R base unit using the module fixing hook and secure locking mechanism.
Utilize shielded twisted-pair cables for all RS-422 and RS-485 connections to minimize electromagnetic interference (EMI).
Connect terminating resistors (typically 110 or 330 ohms) across SDA/RDA or RXD+/RXD- terminals depending on the network configuration.

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.

FAQ

What is the primary function of the RJ71C24-R4 module?

The RJ71C24-R4 is a serial communication module designed for the MELSEC iQ-R PLC series, providing two RS-422/RS-485 ports to interface with serial peripherals and external systems.

Does this module support Modbus communication?

Yes, the RJ71C24-R4 supports Modbus/RTU protocols, allowing integration with Modbus master and slave networks.

What are the physical dimensions of the RJ71C24-R4?

The module has a width of 27.8 mm, a height of 106 mm, a depth of 110 mm, and weighs approximately 0.13 kg.

Can I install or remove this module while the PLC rack is powered?

No, always shut off all external power supplies before mounting, removing, or wiring any MELSEC iQ-R series module to prevent hardware damage.

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