QD81MEM-4GBC 4GB Memory Module, Mitsubishi Electric Melsec-Q CPU Expansion Card

QD81MEM-4GBC

Mitsubishi QD81MEM-4GBC

4GB PLC Memory Module

QD81MEM-4GBC

Mitsubishi QD81MEM-4GBC is a 4GB PLC Memory Module designed for industrial automation systems, offering reliable data storage and enhanced processing capacity for Mitsubishi Q series PLCs.

Specification

SEODescription

The Mitsubishi QD81MEM-4GBC is a high-capacity 4GB PLC Memory Module designed for industrial automation systems. It integrates seamlessly with Mitsubishi Q-series PLCs, supporting direct connection to up to 4 expansion modules for scalable control applications. While the module itself lacks physical I/O points, it serves as a critical storage solution for large-scale programs and data logging. It features a USB 2.0 interface for fast data transfer and firmware updates, operates within a 24 VDC ±10% voltage range, and functions reliably in temperatures from 0 to 55°C. Ideal for manufacturing, energy, and process control industries, the QD81MEM-4GBC enhances system performance with its robust data retention and compatibility. Key advantages include high storage capacity and durability, though its specialized design limits use to Mitsubishi platforms.

SEOSpecification

Parameter	Specification
Model Name	QD81MEM-4GBC
Manufacturer	Mitsubishi Electric
Module Type	4GB PLC Memory Module
Memory Capacity	4 GB
Compatibility	Mitsubishi Q Series PLCs
Interface Type	Dedicated extension interface
Operating Voltage	5 VDC ±5%
Operating Temperature	0°C to 55°C
Storage Temperature	-25°C to 75°C
Dimensions (WxHxD)	27.4 x 98 x 65 mm
Weight	Approx. 150 g
Data Retention	10 years (with battery backup)
Certification	CE, RoHS compliant

SEOQandA

question:What shipping methods do you support?
answer:We support DHL, FedEx, UPS, and other mainstream shipping methods.
question:What happens if a refurbished product malfunctions?
answer:We offer replacement or refund for refurbished products with malfunctions.
question:Why is there a handling fee?
answer:Handling fees cover processing, administration, and transaction costs.

SEOQandA_Product

question:How to resolve 'Module not detected' error in QD81MEM-4GBC?
answer:Verify power supply, check physical connections, and confirm module installation in the correct base unit slot.
question:Why does QD81MEM-4GBC show incorrect memory capacity?
answer:Reformat the memory card using GX Works2 utility to restore proper capacity recognition.
question:QD81MEM-4GBC write operation fails. What to check?
answer:Ensure memory card is unlocked, has sufficient space, and file system isn't corrupted. Replace if damaged.
question:How to fix communication timeout with QD81MEM-4GBC?
answer:Check PLC communication settings, verify cable integrity, and reduce electrical noise in the installation environment.
question:QD81MEM-4GBC not recognized by GX Works2. Solution?
answer:Update GX Works2 to latest version, confirm driver compatibility, and restart both PLC and programming software.