QJ71GP21S-SX Mitsubishi MELSEC-Q Series CC-Link IE Field Network Ethernet Module

QJ71GP21S-SX

MELSEC CC-Link Module

PLC Communication Interface

QJ71GP21S-SX

The QJ71GP21S-SX MELSEC CC-Link Module provides high-speed PLC communication interface for industrial automation, supporting real-time data exchange and seamless integration in CC-Link networks.

Specification

SEODescription

The QJ71GP21S-SX is a MELSEC CC-Link Module designed for high-speed PLC communication interfaces, enabling seamless integration in industrial automation systems. This module supports up to 64 directly connected CC-Link slave devices, featuring 32 input/output points for real-time data exchange. It operates on a 24V DC power supply (20.4–28.8V range) and functions reliably within 0–55°C temperatures. Equipped with an RS-485 interface, it achieves communication speeds up to 10 Mbps over distances of 100m (at 10 Mbps) or 1200m (at 156 kbps). Widely used in manufacturing, robotics, and process control, its strengths include robust noise resistance, plug-and-play compatibility with MELSEC PLCs, and diagnostic tools for network troubleshooting. However, it requires dedicated configuration software (GX Works2) for setup, and its rigid topology limits flexibility in complex networks.

SEOSpecification

Parameter	Specification
Model	QJ71GP21S-SX
Module Type	MELSEC CC-Link Communication Module
Communication Protocol	CC-Link IE Field Network
Transmission Rate	10 Mbps (1 Gbps via fiber optic)
Interface	RJ45 (Copper) / SX Fiber Optic Connector
Power Supply	5 VDC ±5% (via PLC base unit)
Operating Temperature	0°C to 55°C
Certification	CE, UL, RoHS
PLC Compatibility	MELSEC-Q Series
Max Stations	120 stations per network
Data Exchange	Cyclic/transient transmission
Isolation	Photoelectric isolation (2500 VAC)

SEOQandA

question:Does the company provide technical selection services?
answer:Yes, we offer technical selection guidance to ensure optimal product compatibility.
question:What happens if a refurbished product malfunctions?
answer:We provide immediate replacement or refund for confirmed refurbished product defects.
question:What payment methods are accepted?
answer:We support TT, PayPal, and other secure payment methods for global transactions.

SEOQandA_Product

question:QJ71GP21S-SX fails to establish network connection.
answer:Verify cable integrity, confirm proper termination resistors, and check IP/node settings in parameters.
question:Inconsistent data transmission with QJ71GP21S-SX.
answer:Use shielded CC-Link IE cables, ensure correct baud rate, and check for electrical noise interference.
question:ERR LED illuminated on QJ71GP21S-SX module.
answer:Review error codes via diagnostics, verify hardware configuration, and reset or replace faulty modules.
question:QJ71GP21S-SX shows communication timeouts.
answer:Validate network topology, check switch/router settings, and ensure consistent communication cycle times.
question:Module recognition failure in GX Works2.
answer:Update GX Works2 to latest version, confirm module installation, and check backplane compatibility.