QJ71E71-B5 MELSEC-Q Series Ethernet Module - Mitsubishi Electric PLC Communication Interface

QJ71E71-B5 module

Mitsubishi PLC Ethernet module

MELSEC Q series communication

QJ71E71-B5

The QJ71E71-B5 module is a Mitsubishi PLC Ethernet module designed for MELSEC Q series communication, enabling seamless Ethernet connectivity, data exchange, and industrial automation integration within Mitsubishi control systems.

Specification

SEODescription

The QJ71E71-B5 module is a Mitsubishi PLC Ethernet module designed for MELSEC Q series communication, enabling seamless integration of industrial automation systems. This module supports 10BASE-T/100BASE-TX Ethernet interfaces, operating at 10/100 Mbps, and connects directly to the MELSEC Q series base unit via a dedicated slot, allowing integration with up to 64 network modules per system. It operates on a 5VDC power supply with a tolerance of ±5% and functions reliably within a temperature range of 0–55°C. Widely used in manufacturing, automotive, and process control industries, the module excels in real-time data exchange, supporting protocols like MC protocol, TCP/IP, and UDP for device networking. Its key advantages include high-speed communication, compatibility with legacy systems, and robust error detection. However, its configuration requires specialized software (e.g., GX Works), and its performance may degrade in environments with extreme electromagnetic interference. The QJ71E71-B5 is ideal for applications demanding reliable Ethernet connectivity within the MELSEC Q series ecosystem.

SEOSpecification

Parameter	Specification
Module Type	Mitsubishi PLC Ethernet module
Series	MELSEC Q series communication module
Model	QJ71E71-B5
Protocol Support	TCP/IP, UDP/IP, MC protocol
Port Type	10BASE-T/100BASE-TX (RJ45)
Transfer Rate	10/100 Mbps auto-negotiation
Communication Mode	Ethernet communication with external devices
Compatibility	MELSEC-Q series PLC base units
Power Supply	5VDC ±5% (from PLC base unit)
Power Consumption	5W max
Operating Temperature	0°C to 55°C
Storage Temperature	-25°C to 65°C
Humidity	10-90% RH (non-condensing)
Mounting	DIN rail or direct mounting
Certifications	CE, UL, FCC
Weight	0.2 kg

SEOQandA

question:Why is a service fee charged?
answer:Our service fee covers transaction processing, bank charges, and operational costs to ensure secure and efficient handling.
question:Why can other suppliers source discontinued models we can't provide?
answer:Other suppliers might have leftover stock or different sourcing channels, but discontinued models often lack quality assurance and authenticity verification.
question:What payment methods do you accept?
answer:We accept TT, PayPal, and other mainstream payment methods for secure and convenient transactions.

SEOQandA_Product

question:How to resolve communication errors in QJ71E71-B5?
answer:Verify parameter settings (IP, subnet, port) using configuration tools and ensure network compatibility.
question:QJ71E71-B5 fails to establish connection.
answer:Check physical cabling, network connectivity, firewall settings, and confirm target device accessibility.
question:Data mismatch during QJ71E71-B5 communication.
answer:Validate data format (ASCII/hex), byte order alignment, and use monitoring tools to trace data packets.
question:QJ71E71-B5 module not responding.
answer:Confirm power supply, check status LEDs, restart the module, and validate PLC program execution.
question:Firmware update failed on QJ71E71-B5.
answer:Use correct firmware version, ensure stable power during update, and avoid interrupting the process.