Mitsubishi Electric

Mitsubishi Electric Q26UDHCPU MELSEC Q Series Universal CPU Module

SKU Q26UDHCPU

In stock
  • 12-month warranty
  • Free returns within 30 days
  • Manufacturer: Mitsubishi Electric

  • Product No.: Q26UDHCPU

  • Country of origin:United States

  • Product Type: PLC CPU Modules

  • Payment: T/T, Western Union

  • Weight: 1200g

  • Dimensions: 98 mm x 27.4 mm x 89.3 mm

  • Shipping port: Xiamen

  • Warranty: 12 months

Description

Designed for high-speed, multi-disciplinary industrial control, the Mitsubishi Electric Q26UDHCPU represents the high-tier processing tier of the MELSEC Q Series programmable logic controller platform. This module executes basic logical operations at an ultra-fast instruction speed of 9.5 ns, allowing control engineers to run highly complex control loops without cycle time degradation. It features a generous 260 K steps program capacity alongside extensive device memory allocations, making it highly suitable for demanding multi-CPU configurations and data-intensive manufacturing applications.

Features

  • Ultra-High-Speed Execution: Processes basic LD instructions in 9.5 ns and MOV instructions in 19 ns for deterministic cycle execution.
  • Substantial Memory Architecture: Features 1040 KB of program memory, 1280 KB of standard RAM, and 4096 KB of standard ROM.
  • Multi-Language Programming: Supports Structured Text (ST), Ladder Diagrams (LD), Sequential Function Charts (SFC/MELSAP), and Function Blocks.
  • Advanced Device Range: Manages up to 8192 total device points and 4096 physical input/output points.
  • Multi-CPU Support: Integrates high-speed communication areas (32 KB shared memory) for synchronized parallel processing with up to four CPUs.

Applications

  • High-speed multi-axis packaging and bottling machinery.
  • Automotive assembly line body-shop controllers.
  • Large-scale municipal water treatment plant processing units.
  • Semiconductor fabrication tool coordination and material handling.

Technical Specifications

Parameter Value
Manufacturer Mitsubishi Electric
Model Code Q26UDHCPU
Control Method Stored program iteration operation
I/O Control Method Refresh method (Direct access I/O possible)
LD Instruction Execution Speed 9.5 ns
Program Capacity 260 K steps (1040 KB)
Standard RAM (Drive 3) 1280 KB
Standard ROM (Drive 4) 4096 KB
Internal Current Consumption (5 VDC) 0.39 A
Operating Ambient Temperature 0 to 55 degC
Storage Ambient Temperature -25 to 75 degC
Dimensions (H x W x D) 98 mm x 27.4 mm x 89.3 mm
Net Weight 0.20 kg
Shipping Weight (Calculated) 1.20 kg

Empirical Engineering Insights

Alternative Models & Compatibility

This universal model acts as a direct, high-capacity upgrade path from legacy Q-series processors such as the Q25HCPU. When migrating projects to this module, verify that your GX Works2 or GX Developer programming software is updated to support the extended device points and structural changes. Note that the Universal model supports newer SRAM, Flash, and ATA memory cards which may differ from older High-Performance model interfaces.

Application Pitfalls & Engineering Notes

When utilizing this processor in complex multi-CPU configurations, keep in mind that the CPU shared memory high-speed communication area is limited to 32 KB. Exceeding this limit will force the system to route communications through standard CPU shared memory, which adds latency. Ensure that the total current draw of all modules on your base unit does not exceed the maximum rated output of the chosen Q-series power supply module, especially considering the unit's native 0.39 A draw at 5 VDC.

Commissioning & Wiring Tips

When installing memory cards (e.g., SRAM cards), always perform format routines through the GX Works2 interface prior to data mapping. Do not remove or insert memory cards while the CPU is powered on to prevent data corruption. Always ensure the backup battery is fully functional and connected if you are utilizing the standard RAM (Drive 3) or latch relays to store critical recipe parameters during power-off states.

Installation Guidelines

CRITICAL WARNING

Shut down all main electrical disconnects powering the PLC rack before attempting to install or remove this CPU module. Failure to de-energize the backplane may cause structural damage to the connector pins, produce system fault codes, or lead to immediate hardware failure.

1
Align the module's lower hook onto the base unit's guide groove.
2
Push the top of the module firmly onto the base plate until the module lock clicks into position.
3
Secure the module to the base unit using the integrated mounting screw (M3 screw, torque to 0.36 to 0.48 N-m).
4
Connect the communication and programming cables to the front-panel interfaces prior to powering up.

FAQ

What is the maximum program capacity supported by this CPU module?

This module supports a program capacity of up to 260K steps, which is equivalent to approximately 1040 KB of dedicated program memory.

Does this processor support high-speed multi-CPU architectures?

Yes, it features a dedicated high-speed multi-CPU communication interface containing 32 KB of shared memory, allowing synchronized co-processing with up to four CPUs.

What software do I need to program this controller?

You can configure and program this module using GX Works2 or GX Developer. Ensure your software version is updated to support the Universal QCPU family.

What is the current consumption of this module from the backplane?

The module consumes 0.39 A of direct current at 5 VDC from the main rack power supply unit.

View all FAQs →

Quantity
Shipping & Returns

Global Express Shipping

  • Standard Delivery: 4–6 business days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our technical warranty.
Reviews
1 of 1
Only 10 item(s) left in stock
Quantity
View full details

Global Express Shipping

  • Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
  • Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
  • Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

  • 30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
  • 12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).


For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

Country of origin
United States

Technical knowledge

Commissioning OPC UA in KEPServerEX: A Field Checklist

A practical commissioning sequence for KEPServerEX OPC UA connections: define data ownership, test tags locally, configure endpoint and certificate trust, limit access, then verify failure recovery...

Set a PLC Commissioning Laptop IP Without Losing Access

Commissioning an Ethernet-connected PLC often starts with the laptop, not the controller. Learn how to record existing settings, choose a temporary address, test connectivity, and restore the plant...

Designing Automation for Combustible Dust Hazards

Combustible dust controls require more than alarms. Learn how to map dust generation, select instrumentation, design interlocks, handle failed feedback, test safe states, and maintain the full...

Hairpin Stators: Benefits, Limits, and Inspection

Hairpin windings raise slot fill and support compact traction motors, but conductor geometry, AC losses, insulation damage, weld quality, and cooling determine whether the design meets its targets.

Using Ansible for Controlled SCADA Server Changes

Use Ansible to standardize SCADA server changes without expanding OT risk. This guide covers inventories, idempotent playbooks, staged testing, credentials, logging, and practical rollback controls.

Securing Remote PLC Access Beyond the VPN

A VPN encrypts the path to an industrial network, but secure remote PLC work also needs identity controls, segmented access, change approval, logging, safe operating boundaries, and tested recovery...