Free Shipping Across the USA — Worldwide Delivery Available!
PALM Parts Solution
AccountQuote
In Stock Fast Shipping Available
Mitsubishi QJ71C24N-R2 2-Channel Serial Communication Module for MELSEC-Q PLCs

*Image shown is a representation only. Actual product may vary.

Mitsubishi QJ71C24N-R2

by Mitsubishi Electric

Read verified buyer reviews ↓

OverviewThe Mitsubishi QJ71C24N-R2 is a high-performance, dual-channel serial communication module designed for seamless integration with MELSEC-Q Series Programmable Logic Controllers. This robust unit excels at providing superior connectivity, supporting a comprehensive array of industrial communication methods, including RS-232C, RS-422, and RS-485. Engineered to optimize industrial automation, the QJ71C24N-R2 ensures effortless data exchange with various serial devices found across industrial settings. From barcode readers and Human-Machine Interfaces (HMIs) to temperature controllers and remote I/O units, this module guarantees dependable data transmission, contributing to the efficiency and responsiveness of your control systems. Its advanced features and proven reliability make it a crucial component for contemporary industrial automation applications.Key Features Dual-Channel Versatility: Features two independent channels, permitting simultaneous communication with multiple devices or providing redundant communication paths. Broad Protocol Support: Compatible with RS-232C, RS-422, and RS-485 protocols, offering substantial flexibility for connecting diverse serial equipment. High-Speed Communication: Achieves data transfer rates up to 230.4 kbps, ensuring rapid and efficient transmission. Configurable Transmission Format: Supports customizable settings for start bit, data bit, parity, and stop bit, adapting to specific device requirements. Ample Buffer Memory: Incorporates a substantial 13,440 bytes of buffer memory per module, which helps prevent data loss and ensures uninterrupted communication flow. Enhanced Isolation: Includes optical isolation between communication and internal circuits, providing protection against electrical noise and maintaining system stability. Multi-Drop Capability: Supports multi-drop connections, allowing several devices to connect to a single communication channel, simplifying wiring and system architecture. Technical Specifications Model: QJ71C24N-R2 Series: MELSEC-Q Power Supply: Draws power directly from the PLC backplane, simplifying wiring and installation. Dimensions: Standard Q Series module size ensures compatibility and easy integration into existing MELSEC-Q racks. Mounting: Designed for straightforward mounting in a standard base unit slot within a standard MELSEC-Q PLC system. Operating Temperature: Engineered for reliable operation within a broad temperature range of 0°C to 55°C, making it suitable for various industrial environments. Weight: Approximately 0.2 kg (0.44 lbs), contributing to a lightweight and efficient system setup. Certifications: Complies with CE, UL, and cUL standards, ensuring international acceptance and adherence to safety and quality regulations. Applications Barcode Scanner Integration: Facilitates reliable connectivity with barcode scanners for inventory management, production tracking, and quality control. Temperature Controller Communication: Enables seamless data exchange with temperature controllers for precise process monitoring and control in various industries. Serial-Based HMI Panels: Connects to serial Human-Machine Interface (HMI) panels, providing operators with intuitive access to system data and controls. Remote Device Interfacing: Ideal for interfacing with a wide range of remote devices, extending the reach and functionality of your control system. Legacy Equipment Communication: Provides essential connectivity for integrating older serial-based equipment into modern MELSEC-Q PLC systems, extending the lifespan of existing investments. Why ChooseThe Mitsubishi QJ71C24N-R2 stands out as an exceptional choice for demanding industrial communication applications. It offers an impressive combination of versatility, reliability, and ease of integration. Its multi-protocol capability ensures it can interface with almost any serial device, providing a flexible and future-proof solution.Order NowContact Palm Parts Solution today to inquire about the Mitsubishi QJ71C24N-R2 and upgrade your industrial communication capabilities.FAQWhat types of communication protocols does the QJ71C24N-R2 support?The QJ71C24N-R2 supports RS-232C, RS-422, and RS-485 protocols, offering broad compatibility with various industrial devices.How many communication channels does this module have?This module features two independent communication channels, allowing for simultaneous data exchange with multiple devices.Can the QJ71C24N-R2 integrate with older serial equipment?Yes, the QJ71C24N-R2 is an excellent solution for integrating legacy serial-based equipment into modern MELSEC-Q PLC systems.

🇺🇸 Ships from our Florida warehouse
1-Year PALM Parts Warranty
CONDITION
$254.99
12 in stock

USA — Free FedEx Priority & UPS Ground · Worldwide shipping available

For more quantity please contact Customer Service

Experts Available 24/7 · 365
+1 (689) 263-1985
sales@palmpartssolution.com

Fast Shipping

Dispatched quickly on in-stock items via UPS, FedEx & DHL worldwide.

Availability

Thousands of parts in stock — ready for immediate dispatch from Florida.

Payment Flexibility

AMEX, Visa, MasterCard, PayPal, Discover and wire transfer accepted.

PRODUCT DETAILS

Mitsubishi QJ71C24N-R2

Overview

This is a genuine Mitsubishi Electric component from the MELSEC PLCs family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.

Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.

Key Features

  • Genuine Mitsubishi Electric catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Mitsubishi Electric automation ecosystem
  • Engineered to integrate inside MELSEC PLCs installations

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Mitsubishi Electric equipment. Where applicable, confirm:

  • Input/output voltage and current rating
  • Communication protocol and network role
  • Mounting form factor and footprint
  • Operating temperature, humidity, and IP rating
  • Required certifications (UL, CE, ATEX, marine, etc.)

Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.

Replacement Information

Three ways to source this part through PalmPartsSolution:

  1. Exact replacement — same Mitsubishi Electric catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. Engineered migration — current-generation Mitsubishi Electric platform with documented conversion notes for the MELSEC PLCs family

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

  • Model: QJ71C24N-R2
  • Series: MELSEC-Q
  • Power Supply: Draws power directly from the PLC backplane, simplifying wiring and installation.
  • Dimensions: Standard Q Series module size ensures compatibility and easy integration into existing MELSEC-Q racks.
  • Mounting: Designed for straightforward mounting in a standard base unit slot within a standard MELSEC-Q PLC system.
  • Operating Temperature: Engineered for reliable operation within a broad temperature range of 0°C to 55°C, making it suitable for various industrial environments.
  • Weight: Approximately 0.2 kg (0.44 lbs), contributing to a lightweight and efficient system setup.
  • Certifications: Complies with CE, UL, and cUL standards, ensuring international acceptance and adherence to safety and quality regulations.

Applications

  • Barcode Scanner Integration: Facilitates reliable connectivity with barcode scanners for inventory management, production tracking, and quality control.
  • Temperature Controller Communication: Enables seamless data exchange with temperature controllers for precise process monitoring and control in various industries.
  • Serial-Based HMI Panels: Connects to serial Human-Machine Interface (HMI) panels, providing operators with intuitive access to system data and controls.
  • Remote Device Interfacing: Ideal for interfacing with a wide range of remote devices, extending the reach and functionality of your control system.
  • Legacy Equipment Communication: Provides essential connectivity for integrating older serial-based equipment into modern MELSEC-Q PLC systems, extending the lifespan of existing investments.

Why Choose the QJ71C24N-R2?

The Mitsubishi QJ71C24N-R2 stands out as an exceptional choice for demanding industrial communication applications. It offers an impressive combination of versatility, reliability, and ease of integration. Its multi-protocol capability ensures it can interface with almost any serial device, providing a flexible and future-proof solution.

Availability & Shipping

  • In stock: QJ71C24N-R2 ready for immediate dispatch from our Florida warehouse.
  • Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
  • Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
  • Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
  • Buy with confidence: Every QJ71C24N-R2 ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Mitsubishi Electric

The QJ71C24N-R2 supports RS-232C, RS-422, and RS-485 protocols, offering broad compatibility with various industrial devices.

Machine down? We ship parts the same day.

New, surplus, and refurbished Mitsubishi Electric inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.

CUSTOMER REVIEWS

What Verified Buyers Say

No reviews yet for this product. Be the first verified buyer to share your experience — we email a review invitation after every purchase.

Independent Supplier Notice

PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.

Product Condition & Firmware

All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.

Are you an Electrical Distributor?Learn more about our distributor program

PALM Parts Solution sells used surplus products. PALM Parts Solution is not an authorized distributor, affiliate, or representative for the brands we carry. Products sold by PALM Parts Solution come with PALM Parts Solution's 1-Year Warranty and do not come with the original manufacturer's warranty. Designated trademarks, brand names and brands appearing herein are the property of their respective owners. This website is not sanctioned or approved by any manufacturer or tradename listed.

Read full disclaimer →