The Q03UDVCPU is Mitsubishi Electric’s entry-level Universal model CPU for the MELSEC-Q programmable controller series, providing 3,000 steps of program memory with built-in USB and Ethernet interfaces in a compact, cost-efficient module designed for small-to-medium scale discrete automation. As part of the MELSEC-Q Universal model V series, the Q03UDVCPU delivers an execution speed of 1.0 ns per LD instruction — identical to higher-capacity Universal models — ensuring that upgrading to a larger CPU in the same facility requires no relearning of programming tools or system architecture. In stock at Atlantech Drives. Request your quote within 24-48 hours with worldwide shipping and 12-month warranty.
What Is the Q03UDVCPU?
The Q03UDVCPU belongs to the Universal V model sub-family within the MELSEC-Q CPU range. The «V» designation distinguishes this sub-family from the standard «UDE» Universal Enhanced models, indicating a streamlined feature set optimised for cost-sensitive applications while retaining the same high-speed execution engine. With 3,000 program steps and support for up to 4,096 I/O points in a local configuration, the Q03UDVCPU is well suited for machine-level control, conveyor automation, packaging machinery, and building management applications where the full processing power of a Q26UDEHCPU or Q20UDEHCPU is not required. The module is programmed using GX Works2 or GX Works3 and is fully compatible with the standard MELSEC-Q base units and the complete range of MELSEC-Q peripheral modules.
Key Technical Specifications
- Model: Q03UDVCPU
- Series: MELSEC-Q Universal V model
- Program Memory: 3,000 steps
- Execution Speed: 1.0 ns per LD instruction
- I/O Points: Up to 4,096 (local)
- Built-in Interfaces: Ethernet (100BASE-TX), USB (mini-B)
- Number of Mountable Modules: Up to 64 per base
- Power Supply Voltage: 5 VDC (via base unit)
- Operating Temperature: 0°C to 55°C
- Weight: Approx. 0.17 kg
- Compatible Base Units: Q3B, Q5B, Q6B, Q12B, Q25B, Q32B, Q33B, Q35B, Q38B, Q312B
- Programming Software: GX Works2, GX Works3
Typical Industrial Applications
The Q03UDVCPU is widely deployed in applications where a compact, cost-effective PLC with modern communication capabilities is required. Typical installations include standalone packaging machines, conveyor sorting systems, injection moulding machine control, HVAC and building automation controllers, and small-scale assembly line sequencing. Its built-in Ethernet port makes it particularly suitable for Industry 4.0 gateway applications, where the PLC must report production data to an MES or SCADA system via SLMP or MC protocol without requiring an additional communication module. In the food and beverage sector, the Q03UDVCPU is commonly used in fill-and-seal machine controllers and checkweigher interfaces, where its fast scan time ensures reliable high-rate product counting and rejection logic.
Replacement & Upgrade Notes
The Q03UDVCPU is the recommended replacement for the legacy Q02UCPU and Q02HCPU in existing MELSEC-Q installations. When upgrading from a Q02HCPU, note that the Q03UDVCPU’s built-in Ethernet port renders the separately mounted QJ71E71-100 Ethernet module redundant in most applications — this slot can be repurposed for an additional I/O or communication module, increasing system flexibility without expanding the base unit. Program migration from GX Developer (used with Q02HCPU) to GX Works2 is supported via the GX Works2 import function, but engineers should verify all special relay (SM) and special register (SD) references after migration, as some assignments changed between the H-model and Universal model CPU generations. The Q03UDVCPU cannot be used in a redundant CPU configuration — for applications requiring hot-standby redundancy, the Q12UDEHCPU or Q26UDEHCPU should be selected instead.
Frequently Asked Questions
Q: What is the difference between the Q03UDVCPU and the Q03UDECPU?
A: The Q03UDVCPU is a Universal V model with 3,000 program steps and a simplified feature set targeting cost-sensitive applications. The Q03UDECPU is a Universal E model with the same step count but with additional support for multiple CPU configurations and a wider range of special function modules. For standalone machine control, the Q03UDVCPU is typically sufficient; for systems requiring inter-CPU communication or redundancy options, the Q03UDECPU or higher Universal E/UDEH models are recommended.
Q: Can the Q03UDVCPU communicate directly with a GOT2000 series HMI?
A: Yes. The Q03UDVCPU’s built-in Ethernet port supports direct connection to Mitsubishi GOT2000 series HMI terminals using the MELSEC communication protocol (MC protocol) over Ethernet. No additional communication module is required. The HMI project must be configured in GT Designer3 with the connection type set to «MELSEC-Q/L/QnA (Ethernet)».
Q: Is the Q03UDVCPU compatible with CC-Link communication modules?
A: Yes. The QJ61BT11N CC-Link Ver.2 master/local module is fully compatible with the Q03UDVCPU and can be mounted in any available slot in the base unit. The CC-Link network parameters are configured within GX Works2 using the network parameter editor.
Do you need more references from this brand? Explore our full catalog of Mitsubishi here: https://atlantechdrives.com/manufacturers/mitsubishi/
