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Home Products MITSUBISHI

Mitsubishi QJ71MB91 Dedicated serial communication module for MELSEC-Q series PLC | Material Number: 167757

Mitsubishi QJ71MB91 Dedicated serial communication module for MELSEC-Q series PLC | Material Number: 167757

✔ IN STOCK ✔ New Original
  • Delivery time: Shipped in 3 days after payment
  • Condition: Brand New & Original OMRON Factory Sealed
  • Warranty: 12 Months Standard Warranty
  • Quality Guarantee: 30-Day Return and Exchange Policy

PLC Q Series Serial Modbus communication module;Master/Slave,RS232,RS422/485port

  • Brand :

    MITSUBISHI
Inquiry now

The QJ71MB91 is a Modbus/TCP interface module for MELSEC-Q series PLCs manufactured by Mitsubishi Electric.

It enables Ethernet communication between the PLC and third-party devices (such as inverters and temperature controllers) that support the Modbus protocol, supports master and slave functions, and is suitable for data exchange in industrial automation.

100% Original & Authentic In-Stock & Fast Shipping Expert Technical Support Reliable Warranty

Technical Specifications

Brand Mitsubishi Electric
Series MELSEC-Q SERIES
Type MASTER/LOCAL STATION
Network Interface MODBUS RTU/MODBUS ASCII

Conformity & Certifications

CE COMPLIANT
UL / cUL COMPLIANT
UKCA COMPLIANT
Shipping Approvals ABS, BV, DNV GL, KR, LR, NK, RINA
EAC NON-COMPLIANT

Why Source This Module From Us?

  • Genuine Guarantee: Guaranteed original Mitsubishi Electric product. We say no to counterfeits or refurbished parts.
  • Ready-to-Ship Inventory: In-stock PLC modules can be dispatched immediately to reduce industrial downtime.
  • Technical Support: Our engineers assist with PLC model verification and wiring diagrams.
  • Competitive Pricing: Strong supply chain ensures competitive prices and bulk order discounts.

Applications

  • Multi-brand Equipment Integration and Hybrid Control System: This is the most typical application scenario for the QJ71MB91. In industrial automation, equipment from different brands often coexist.
  • Distributed I/O Expansion: When the number of local I/O points is insufficient, or when I/O modules need to be placed remotely at locations far from the PLC, the QJ71MB91 can act as a bridge.
  • Process Control and Data Acquisition (SCADA): In situations requiring centralized monitoring of a large number of analog or status variables.
  • Retrofitting and Reusing Existing Equipment: In factory upgrade and renovation projects, retaining existing, older equipment is a common requirement.

 

Engineer's Tip: The QJ71MB91 is the preferred solution for connecting Q-series PLCs to non-Mitsubishi intelligent devices. Its core application areas are industrial automation projects that require low-cost, high-reliability integration of inverters, instruments, remote I/O, or other third-party devices supporting the Modbus RTU protocol.
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Mitsubishi QJ71MB91

Dedicated serial communication module for MELSEC-Q series PLCs

Mitsubishi 167757

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Master/Slave,RS232,RS422/485port

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