Mitsubishi Electric Q04UDEHCPU MELSEC Q Series Universal CPU Module

Description

Engineered for high-speed industrial orchestration, the Mitsubishi Electric Q04UDEHCPU serves as a high-performance central processing unit within the MELSEC Q Series PLC platform. This Universal Q CPU module is designed for complex automation systems requiring fast scan times, integrated Ethernet communication, and structured multi-CPU coordination.

The unit operates on a stored program iteration control method using a high-efficiency refresh I/O mechanism. With support for up to 40K steps (160 KB) of program capacity and a basic instruction processing speed of 9.5 ns for basic LD instructions, this controller manages complex sequential tasks and mathematical computations with minimal latency. Users can program the unit utilizing standard sequence control languages, including Ladder Diagram, MELSAP 3 (SFC), MELSAP-L, Function Block, and Structured Text (ST).

Communication capabilities are anchored by an on-board Ethernet interface supporting 100/10 Mbps transmission speeds. This integrated port handles up to 16 simultaneous socket connections, enabling direct telemetry, MELSOFT network integration, and MC protocol data exchanges. Standard RAM and ROM drives provide scalable storage options for application code, registers, and non-volatile system backups.

Features

• Rapid Execution Speeds: Delivers execution speeds of 9.5 ns for basic LD operations and 19 ns for standard MOV instructions.
• Integrated Communications: Built-in 10/100 Mbps auto-negotiating Ethernet port for peer-to-peer networking, SCADA interfaces, and remote programming.
• Flexible Memory Allocation: Features 160 KB program memory, 256 KB Standard RAM, and 1024 KB Standard ROM, expandable via optional memory cards.
• Multi-CPU Architecture: High-speed shared multi-CPU communication area (32 KB) facilitates tight coordination with auxiliary processors on a single backplane.
• Diverse Device Capacity: Supports 4096 physical I/O points and up to 8192 total I/O device points (X/Y0 to 1FFF).

Applications

• Automotive assembly lines and conveyor control systems
• Water and wastewater processing plant telemetry
• High-speed packaging and materials handling equipment
• Semiconductor fabrication tool management
• Power plant auxiliary systems and utility automation

Technical Specifications

Installation Guidelines

• Backplane Installation: Insert the CPU module firmly into the designated CPU slot of the MELSEC Q Series base unit. Secure the unit using the integrated locking mechanism.
• Ethernet Cabling: Use Category 5 (or higher) shielded twisted-pair cables for the Ethernet connection to minimize electromagnetic noise and maintain link stability.
• Grounding: Ensure the base unit is connected to a dedicated Class D ground (grounding resistance of 100 ohms or less) using a minimum 2 mm square ground wire.
• Thermal Management: Maintain a minimum clearance of 30 mm above and below the module rack to allow natural convective heat dissipation inside the control panel.