Mitsubishi Electric QJ71EIP71 MELSEC Q Series EtherNet/IP Interface Module

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Manufacturer: Mitsubishi Electric
Product No.: QJ71EIP71
Country of origin:United States
Product Type: PLC Communication Modules
Payment: T/T, Western Union
Weight: 2000g
Shipping port: Xiamen
Warranty: 12 months

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Description

Designed for seamless industrial network integration, this communication interface connects MELSEC Q Series programmable controllers directly to EtherNet/IP networks. The Mitsubishi Electric QJ71EIP71 enables robust cyclic tag-based data exchanges, allowing high-speed PLC-to-PLC communication across complex manufacturing systems. Note that this specific module is engineered strictly for tag-based communication between programmable controllers and does not support standard assembly instance communication profiles.

Features

Dedicated EtherNet/IP tag communication interface optimized for peer-to-peer CPU exchanges.
Direct backplane integration with the MELSEC Q Series base units.
Built-in diagnostic LEDs for real-time monitoring of network status, errors, and link activity.
Reliable hardware design suited for high-noise, continuous-duty industrial environments.

Applications

Inter-PLC data synchronization across automated manufacturing cells.
Bridging Mitsubishi Electric control environments with wider plant-level EtherNet/IP networks.
Process monitoring and distributed control architectures requiring deterministic cyclic messaging.

Technical Specifications

Parameter	Value
Manufacturer	Mitsubishi Electric
Model Number	QJ71EIP71
Product Type	EtherNet/IP Interface Module
Base Series	MELSEC Q Series
Interface Port	1x RJ45 Port
Transmission Speed	100 Mbps / 10 Mbps (Auto-negotiation)
Communication Protocol	EtherNet/IP (Tag Communication only; Instance-based communication not supported)
Internal Current Consumption	0.45 A at 5V DC (supplied from rack backplane)
Country of Origin	Japan
Shipping Weight (Calculated)	2.0 kg

Empirical Engineering Insights

Alternative Models & Compatibility

If your application requires communication with external sensor manifolds, remote I/O blocks, or third-party drives that only support Instance-based messaging (Class 1 Assembly instances), you cannot use the QJ71EIP71. Consider implementing a CC-Link IE Field Network module or using a dedicated third-party EtherNet/IP gateway module designed for slave-device instance integration.

Application Pitfalls & Engineering Notes

The QJ71EIP71 is strictly optimized for controller-to-controller data synchronization via Tag Communication. Always verify the memory capacity of the hosting Q-Series CPU, as extensive tag configurations can consume notable processing cycles and network buffer allocations during synchronous high-frequency polling.

Commissioning & Wiring Tips

Always use Category 5e (or higher) Shielded Twisted Pair (STP) cabling in plant floor environments. High-voltage transient noise from nearby variable frequency drives can degrade packet delivery. Ensure the ground terminal (FG) on the main Q Series base unit is securely connected to a low-impedance earth ground to maintain noise immunity through the RJ45 shield connection.

Installation Guidelines

CRITICAL WARNING: Completely de-energize the PLC base unit and all associated field power connections before inserting or removing the communication module. Failure to isolate the power supply can cause irreversible damage to the module internal circuitry, CPU backplane, and risk physical injury from unexpected system operations.

Ensure the MELSEC Q Series rack power is completely switched off and locked out.

Align the lower hook of the QJ71EIP71 module with the mounting hole of the base unit slot.

Push the module firmly into the base unit connector until it seats flush, then tighten the top mounting screw to the specified torque rating (0.36 to 0.48 N-m).

Connect the industrial STP Ethernet cable into the RJ45 port until the lock tab clicks securely into place.

Key Features:

#MELSEC Q Series #PLC Communication Modules

Does the QJ71EIP71 support communication with third-party EtherNet/IP field I/O devices?

Generally, no. This module is designed strictly for tag-based communication between programmable controllers and does not support standard assembly instance connection profiles commonly required by third-party field I/O blocks or variable speed drives.

What is the internal current consumption of this module?

The module consumes approximately 0.45 A at 5V DC from the internal power supply of the MELSEC Q series base unit backplane.

What cable standard should be used with the RJ45 port?

It is highly recommended to use Category 5e (or higher) Shielded Twisted Pair (STP) cabling to minimize high-frequency electromagnetic interference in industrial environments.

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 .

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Mitsubishi Electric QJ71EIP71 MELSEC Q Series EtherNet/IP Interface Module