QJ71FL71 FL-net Communication Module - Mitsubishi Electric MELSEC Q Series PLC Network Interface, FL71 Module

QJ71FL71 FL-net module

Mitsubishi QJ71FL71 module

QJ71FL71 communication module

QJ71FL71

The Mitsubishi QJ71FL71 FL-net communication module ensures reliable industrial network connectivity, enabling real-time data exchange and seamless integration within automation systems. This QJ71FL71 module supports FL-net protocols for efficient device coordination.

Specification

SEODescription

The Mitsubishi QJ71FL71 communication module is a versatile FL-net module designed for seamless integration within the Q series PLC systems, supporting real-time industrial network communication. This module facilitates high-speed data exchange via Ethernet (10BASE-T/100BASE-TX) with FL-net protocol compliance, enabling direct connectivity to up to 64 nodes for synchronized control across automation systems. Operating at 5VDC with a tolerance of ±5%, it functions reliably in industrial environments within a temperature range of 0–55°C. The QJ71FL71 module is widely used in manufacturing, robotics, and process control industries for its robust performance and compatibility with Mitsubishi’s PLC platforms. Key advantages include low-latency communication, scalability, and support for cyclic and transient data transmission. However, its complexity requires specialized configuration software, and its cost may be higher compared to standard Ethernet modules. The QJ71FL71 FL-net module excels in applications demanding precise synchronization and distributed control.

SEOSpecification

Parameter	Specification
Model Name	QJ71FL71 FL-net Module
Manufacturer	Mitsubishi Electric Corporation
Communication Protocol	FL-net (OPCN-2) Ver.2.0
Interface Type	RJ45 Ethernet Port
Transmission Speed	100 Mbps
Transmission Medium	CAT5e or higher-grade twisted pair
Number of Nodes	Up to 254 nodes per network
Power Supply	5 VDC ±5% (Backplane powered)
Power Consumption	0.5 W (Typical)
Operating Temperature	0°C to 55°C
Storage Temperature	-25°C to 75°C
Weight	0.2 kg
Compliance Standards	IEC 61131-2, EMC Directive
Application	Industrial Communication Module for FL-net networks

SEOQandA

question:Can the company provide technical selection services?
answer:Yes, we offer technical selection support tailored to your project requirements.
question:Do you accept payment after delivery?
answer:Yes, flexible payment terms including post-delivery payment are available upon agreement.
question:Can the company ensure stable supply?
answer:Yes, we maintain reliable supply chains and inventory for consistent product availability.

SEOQandA_Product

question:QJ71FL71 fails to connect to network. Possible causes?
answer:Check IP settings, subnet mask, and gateway. Ensure proper cabling and replace if damaged.
question:Unstable communication with QJ71FL71. How to resolve?
answer:Use shielded cables, reduce cable length, and ensure proper grounding to minimize noise interference.
question:QJ71FL71 LED indicators show abnormal status. What to check?
answer:Verify power supply, module diagnostics via GX Works2, and update firmware if necessary.
question:Incorrect data transmission via QJ71FL71. How to troubleshoot?
answer:Review parameter settings (baud rate, data format), and confirm device address mapping consistency.
question:QJ71FL71 module not recognized by PLC. Solution?
answer:Check module installation slot, base unit compatibility, and reconfigure PLC parameters for FL71 module.