Description The Mitsubishi Q03UDECPU is a high-performance CPU module for the MELSEC-Q QnU series, designed for universal PLC applications. It provides 30K steps (120 KB) of program memory and supports up to 4096 I/O points, enabling complex control tasks across industrial environments. With integrated USB and 10/100 Mbit Ethernet ports, it offers flexible programming and communication options for modern automation networks. Technical Specifications Condition New/Never Used Surplus Brand Mitsubishi Category PLCs/Machine Control Part Number Q03UDECPU Subcategory PLC Module/Rack Main Function CPU unit Series MELSEC-Q QnU series Program Memory 30K steps / 120 KB I/O Capacity 4096 points Supply Voltage 5 VDC (from Q-series PSU) Programming Languages LD, ST, FBD, SFC, Relay Symbol, MELSAP3, MELSAP-L Communication Ports USB, RJ45 Ethernet (10/100 Mbit) Communication Protocol Ethernet Execution Speed 20 ns (LD), 40 ns (MOV), 120 ns (floating-point add) Mounting Mode Backplane / Rack Operating Temperature 0°C to 55°C Storage Temperature -25°C to 75°C Storage Type SRAM card, Flash card, ATA card I/O Control Method Refresh system Program Execution Type Stored-program cyclic operation Information About Q03UDECPU The Q03UDECPU is a universal PLC CPU unit within Mitsubishi’s MELSEC-Q QnU series, engineered to deliver fast processing and extensive connectivity. The unit features a stored-program cyclic execution system with a refresh-based I/O control scheme, supporting efficient handling of high-speed automation tasks. It operates on a 5 VDC supply from a dedicated Q-series power supply and mounts directly onto the system backplane. With support for multiple IEC programming languages—including Ladder, Structured Text, Function Block Diagram, and SFC—the Q03UDECPU is well-suited for advanced control system development. Key Features: 120 KB program memory: Suitable for medium to large PLC applications. 4096-point I/O capacity: Supports extensive system expansion. Integrated Ethernet: 10/100 Mbit RJ45 port for programming and network communication. USB connectivity: Simplifies local configuration and diagnostics. Fast instruction execution: LD commands execute in 20 ns for high-speed control. Wide programming language support: LD, ST, FBD, SFC, and Mitsubishi-specific languages. Backplane/rack mounting: Easy integration into MELSEC-Q systems. Industrial temperature tolerance: Operates from 0°C to 55°C for robust field performance. The Q03UDECPU delivers the reliability and precision required for advanced PLC control across industrial automation systems.
