Tutto sui PLC: la CPU
A practical engineering guide to PLC CPU operation, from deterministic scan cycles and I/O image tables to memory, communications, diagnostics, redundancy, processor sizing, and reliable system...
Engineered to handle high-demand industrial processing, the Mitsubishi Electric Q13UDHCPU is a high-performance Universal Q-Series PLC processor designed for complex automation architectures. Integrating state-of-the-art sequencing and structured programming execution, this module provides the computation speed and memory bandwidth required for high-speed synchronization in discrete manufacturing, packaging, and heavy process control. It integrates natively with the MELSEC Q Series backplane system, facilitating low-latency communication with digital, analog, and intelligent function modules.
| Parameter | Specification Values |
|---|---|
| Manufacturer | Mitsubishi Electric |
| Model Code | Q13UDHCPU |
| Series Type | MELSEC Q Series (Universal QCPU) |
| Control Execution Method | Stored program cyclic/iteration operation |
| Program Capacity | 130K steps (520 KB) |
| Standard RAM (Drive 3) | 1024 KB |
| Standard ROM (Drive 4) | 2048 KB |
| Physical I/O Points | 4096 Points (X/Y 0 to FFF) |
| Internal Current Consumption (5V DC) | 0.39 A |
| Operating Temperature Range | 0 to 55 degC (ambient) |
| Storage Temperature Range | -25 to 75 degC |
| Module Dimensions (W x H x D) | 27.4 mm x 98 mm x 89.3 mm |
| Unit Mass | 0.20 kg |
| Shipping Weight (Calculated) | 1.2 kg |
| Interface Type | Functional Assignment & Description |
|---|---|
| USB Port | Mini-B physical interface; supports high-speed program upload/download and online diagnostics via GX Works2. |
| RS-232 Port | D-Sub 9-pin interface for legacy serial communication, direct HMIs, and peripheral telemetry. |
| Memory Card Interface | Dedicated slot accepting SRAM (up to 8 MB), Flash (up to 4 MB), or ATA cards (up to 32 MB) for database storage and firmware storage. |
The Q13UDHCPU serves as a direct upgrade path for older Q02HCPU and Q06HCPU processors. However, note that while the form factor and backplane installation remain identical, transition from older High-Performance models to Universal models requires compiling the project configuration database inside GX Works2 and adjusting task schedules to prevent cycle timing variations due to the faster internal execution times.
When operating multiple CPUs on a shared backplane, the high-speed CPU bus interface consumes shared memory bandwidth. Developers must configure proper interlocking structures within the 32 KB shared memory region to prevent write access overlap, which can trigger system watchdog errors (WDT) and halt process control loops.
To safeguard against battery decay and sudden shutdown logic corruption, commission standard ROM backups. We recommend structuring automatic firmware boot programs to load directly from Drive 4 (Standard ROM) at startup. Additionally, configure memory card partitions during initial setup using the diagnostic memory allocation utility inside the IDE.
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Returns & Warranty

Engineered to handle high-demand industrial processing, the Mitsubishi Electric Q13UDHCPU is a high-performance Universal Q-Series PLC processor designed for complex automation architectures. Integrating state-of-the-art sequencing and structured programming execution, this module provides the computation speed and memory bandwidth required for high-speed synchronization in discrete manufacturing, packaging, and heavy process control. It integrates natively with the MELSEC Q Series backplane system, facilitating low-latency communication with digital, analog, and intelligent function modules.
| Parameter | Specification Values |
|---|---|
| Manufacturer | Mitsubishi Electric |
| Model Code | Q13UDHCPU |
| Series Type | MELSEC Q Series (Universal QCPU) |
| Control Execution Method | Stored program cyclic/iteration operation |
| Program Capacity | 130K steps (520 KB) |
| Standard RAM (Drive 3) | 1024 KB |
| Standard ROM (Drive 4) | 2048 KB |
| Physical I/O Points | 4096 Points (X/Y 0 to FFF) |
| Internal Current Consumption (5V DC) | 0.39 A |
| Operating Temperature Range | 0 to 55 degC (ambient) |
| Storage Temperature Range | -25 to 75 degC |
| Module Dimensions (W x H x D) | 27.4 mm x 98 mm x 89.3 mm |
| Unit Mass | 0.20 kg |
| Shipping Weight (Calculated) | 1.2 kg |
| Interface Type | Functional Assignment & Description |
|---|---|
| USB Port | Mini-B physical interface; supports high-speed program upload/download and online diagnostics via GX Works2. |
| RS-232 Port | D-Sub 9-pin interface for legacy serial communication, direct HMIs, and peripheral telemetry. |
| Memory Card Interface | Dedicated slot accepting SRAM (up to 8 MB), Flash (up to 4 MB), or ATA cards (up to 32 MB) for database storage and firmware storage. |
The Q13UDHCPU serves as a direct upgrade path for older Q02HCPU and Q06HCPU processors. However, note that while the form factor and backplane installation remain identical, transition from older High-Performance models to Universal models requires compiling the project configuration database inside GX Works2 and adjusting task schedules to prevent cycle timing variations due to the faster internal execution times.
When operating multiple CPUs on a shared backplane, the high-speed CPU bus interface consumes shared memory bandwidth. Developers must configure proper interlocking structures within the 32 KB shared memory region to prevent write access overlap, which can trigger system watchdog errors (WDT) and halt process control loops.
To safeguard against battery decay and sudden shutdown logic corruption, commission standard ROM backups. We recommend structuring automatic firmware boot programs to load directly from Drive 4 (Standard ROM) at startup. Additionally, configure memory card partitions during initial setup using the diagnostic memory allocation utility inside the IDE.
Global Express Shipping
Returns & 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 .
| Country of origin |
United States
|