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Home Product QJ71NT11B MELSECNET/H Network Module - Mitsubishi MELSEC PLC High-Speed Redundancy Communication
QJ71NT11B

QJ71NT11B MELSECNET/H Network Module - Mitsubishi MELSEC PLC High-Speed Redundancy Communication

QJ71NT11B network module
MELSEC-Q QJ71NT11B
Mitsubishi NT11 interface
QJ71NT11B
MELSEC-Q QJ71NT11B network module designed for Mitsubishi NT11 interface integration, enabling industrial network communication in automation systems with protocol conversion capabilities.
Categories:Automation
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Product Description

The QJ71NT11B network module, part of the MELSEC-Q series by Mitsubishi, serves as a dedicated interface for integrating NT11 human-machine interface (HMI) units into PLC-based automation systems. It features a single RS-422/485 communication port supporting baud rates up to 115.2 kbps, enabling direct connection to up to eight NT11 devices via multidrop configuration. Operating on a 5V DC backplane supply, this module functions reliably within 0–55°C temperature ranges, making it suitable for factory automation, process control, and machine tool applications. Its plug-and-play design simplifies integration with MELSEC-Q PLCs, though it lacks compatibility with modern HMIs beyond NT series. While offering robust noise resistance for industrial environments, it lacks advanced communication protocols like Ethernet. The module does not include a battery, screen, or sensing components, focusing solely on bridging PLCs with legacy NT11 interfaces via durable serial communication up to 1,200 meters.
Parameter Specification
Product Model MELSEC-Q QJ71NT11B
Function Mitsubishi NT11 interface for network communication
Network Type 10BASE5, 10BASE2, 10BASE-T
Communication Standard IEEE 802.3 (Ethernet)
Transmission Speed 10 Mbps
Interface Connector AUI (DB15) for 10BASE5/10BASE2, RJ45 for 10BASE-T
Number of Nodes Up to 100 nodes per segment
Supported Protocols TCP/IP, UDP/IP, MC protocol
Power Supply 5 VDC ±5% (From main module)
Current Consumption 0.42 A
Operating Temperature 0 to 55°C
Storage Temperature -25 to 75°C
Vibration Resistance 5.9 m/s² (10-55 Hz)
Protection Class IP2X
Certifications CE, UL, cUL
Dimensions (W×H×D) 27.4 × 98 × 63.4 mm
Weight 0.15 kg
question:Can I apply for low-value declaration on shipments?
answer:Yes, low-value declarations are supported if compliant with destination regulations. Provide required documents upon request.
question:Why were the product labels removed upon receipt?
answer:Labels might be damaged during transit or customs inspection. Contact us immediately for resolution.
question:Do you offer technical selection guidance?
answer:Yes, technical selection support is available. Share your specifications for tailored recommendations.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
question:Can I apply for low-value declaration on shipments?
answer:Yes, low-value declarations are supported if compliant with destination regulations. Provide required documents upon request.
question:Why were the product labels removed upon receipt?
answer:Labels might be damaged during transit or customs inspection. Contact us immediately for resolution.
question:Do you offer technical selection guidance?
answer:Yes, technical selection support is available. Share your specifications for tailored recommendations.
question:Can the company ensure stable product supply?
answer:Yes, we maintain long-term partnerships and strict inventory management.
question:Why is there a transaction fee?
answer:The fee covers payment processing and administrative costs for secure transactions.
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