Mitsubishi Q13UDEHCPU Universal PLC CPU Module

The Mitsubishi Q13UDEHCPU is a high-performance universal model CPU module for the MELSEC Q series programmable logic controllers. This CPU is part of the Q-UDEH series, which features built-in Ethernet and USB ports, high-speed processing, and large program memory. With a program capacity of 130K steps and basic instruction execution time of 0.0095 µs per LD instruction, the Q13UDEHCPU is designed for complex, high-speed automation applications requiring extensive data processing and network connectivity. The module supports multi-CPU configurations (up to 4 CPUs) and can control up to 4096 I/O points. The built-in Ethernet port supports CC-Link IE controller network, MELSOFT connection, and socket communication. The USB port provides convenient programming access without the need for dedicated communication cards.

Technical Specifications

The Q13UDEHCPU has a program memory capacity of 130K steps (standard RAM). Device memory: 1.5 MB. Extended data register capacity: 64K words (expandable). Basic instruction speed: 0.0095 µs (LD). Application instruction speed: 0.0195 µs (MOV). I/O points: maximum 4096 points (with expansion). Number of I/O modules: up to 4096 points. Built-in communication ports: Ethernet (100BASE-TX/10BASE-T) and USB (2.0, mini-B). Supported Ethernet protocols: MELSOFT connection (for programming), CC-Link IE controller network (master/slave), socket communication (TCP/UDP), and SLMP (Seamless Message Protocol). The CPU supports multi-CPU systems with up to 4 CPUs sharing I/O modules. Power consumption from base unit: 5 V DC, 0.82 A. Dimensions: 98 mm (H) × 27.8 mm (W) × 115 mm (D). Weight: 0.3 kg. Operating temperature: 0°C to 55°C. Storage: -20°C to 75°C. Humidity: 10-90% non-condensing.

Key Features

• 130K steps program memory for large, complex applications

• 0.0095 µs basic instruction speed for fast scanning

• Built-in Ethernet port (100BASE-TX) for CC-Link IE controller network and MELSOFT

• Built-in USB port for high-speed programming and diagnostics

• Multi-CPU support (up to 4 CPUs) for parallel processing

• Standard memory card slot for SD/SDHC cards (up to 8 GB)

• Real-time clock with battery backup (lithium battery)

• Universal model supports both legacy MELSEC and structured programming

• Direct connection to GOT HMI via Ethernet

• Built-in SLMP server for seamless communication with other devices

Memory and Performance

The Q13UDEHCPU's 130K step program capacity is sufficient for large-scale control applications such as assembly lines, process automation, and coordinated motion systems. The CPU can store up to 1.5 MB of device memory (including file registers). The high-speed processing allows the CPU to handle high-speed counting, pulse outputs, and interrupt routines with minimal delay. The CPU includes a standard SD card slot that can be used for program backup, data logging, and firmware updates. The real-time clock maintains date and time for event logging and scheduled tasks. The CPU's diagnostic functions include a watchdog timer, self-diagnostics (checksum, memory test), and error history storage. The CPU also supports online program editing, allowing modifications to the ladder logic while the PLC is running.

Built-in Ethernet Communication

The built-in Ethernet port provides versatile connectivity without requiring an additional Ethernet module. It supports the following protocols: MELSOFT connection for programming and monitoring from GX Works2 or GX Works3; CC-Link IE controller network for high-speed, large-capacity data exchange between multiple Q series CPUs (up to 120 nodes); socket communication (TCP/UDP) for connecting to third-party devices using custom protocols; and SLMP (Seamless Message Protocol) for accessing the CPU from any Ethernet device (including computers and HMIs). The Ethernet port also supports remote password protection for security. The port can be used for time synchronization via SNTP and for email transmission (with optional software).

Programming and Software

The Q13UDEHCPU is programmed using Mitsubishi GX Works2 (version 1.54 or later) or GX Works3 (version 1.005 or later). Supported languages include Ladder Diagram (LD), Structured Text (ST), Sequential Function Chart (SFC), and Function Block Diagram (FBD). The CPU supports both simple project and structured project (IEC 61131-3) formats. The software includes a built-in simulator for offline debugging, and the USB connection allows high-speed program download and upload. The CPU also supports the use of function blocks (FB) and library files for reusability. The GX Works2 software provides a comprehensive debugging environment with real-time monitoring, watch windows, and logic analysis.

Applications

The Q13UDEHCPU is suitable for medium to large industrial automation systems such as automotive assembly lines, semiconductor manufacturing equipment, packaging machinery, material handling systems, printing presses, and process control skids. The high-speed processing and large memory capacity make it ideal for applications requiring complex math operations, data logging, or integration with multiple devices via Ethernet. The built-in CC-Link IE controller network allows the CPU to act as a master in a distributed control system, coordinating multiple PLCs and remote I/O stations.

Installation and Maintenance

The Q13UDEHCPU installs into any slot of a Q series base unit (e.g., Q35B, Q38B, Q312B). The CPU is designed to be used in a multi-CPU system; set the CPU number using the rotary switches. Connect Ethernet cables to the RJ45 port, and the USB cable to the mini-B port. The CPU includes a battery (type Q6BAT) that retains program and data during power-off; replace the battery when the "BAT" LED lights. The SD card slot is accessible from the front; ensure the card is formatted before use. The CPU's LEDs indicate RUN, ERR, USER, BAT, and communication status. For firmware updates, use a PC with USB or Ethernet connection and the appropriate update utility.

Conclusion

The Mitsubishi Q13UDEHCPU universal PLC CPU module delivers high-speed processing, large program memory, and built-in Ethernet for modern automation requirements. Its 130K step capacity, 0.0095 μs instruction speed, and multi-CPU support make it a powerful choice for demanding control applications in the MELSEC Q series family.