The Q06UDVCPU is Mitsubishi Electric’s 6,000-step Universal V model CPU for the MELSEC-Q programmable controller series, offering a meaningful step-up in program capacity over the Q04UDVCPU while maintaining the same compact form factor, 1.0 ns execution speed, and dual built-in Ethernet and USB interfaces. Positioned as the mid-range entry point in the Universal V model family, the Q06UDVCPU is widely specified for multi-zone conveyor systems, automated test equipment, and process monitoring controllers where the 4,000-step capacity of smaller V models proves insufficient but the full feature set of a Universal Enhanced model is not required. In stock at Atlantech Drives. Request your quote within 24-48 hours with worldwide shipping and 12-month warranty.
What Is the Q06UDVCPU?
The Q06UDVCPU belongs to Mitsubishi Electric’s MELSEC-Q Universal V model CPU sub-family, sharing the same hardware platform and communication architecture as the Q03UDVCPU and Q04UDVCPU but providing 6,000 steps of program memory — double the capacity of the Q03UDVCPU. The module is fully compatible with all standard MELSEC-Q base units (Q3B through Q312B) and the complete ecosystem of MELSEC-Q peripheral modules including I/O, analogue, communication, and positioning modules. Programming is performed via GX Works2 or GX Works3 using ladder logic, function blocks, structured text, or SFC, with full support for Mitsubishi’s standard FB libraries for communication and motion interfaces. The Q06UDVCPU does not support redundant CPU configuration or program memory extension via SRAM memory card — applications requiring either of these features should specify the Q06UDEHCPU instead.
Key Technical Specifications
- Model: Q06UDVCPU
- Series: MELSEC-Q Universal V model
- Program Memory: 6,000 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
Series Comparison & Selection Guide
The MELSEC-Q Universal V model family spans four step capacities — 3,000 (Q03UDVCPU), 4,000 (Q04UDVCPU), 6,000 (Q06UDVCPU), and 13,000 (Q13UDVCPU) — all sharing identical hardware and communication interfaces. The Q06UDVCPU is the correct choice when the compiled program size falls between 4,500 and 6,000 steps after full function block instantiation, or when the application requires three or more communication FB instances alongside the main machine control logic. For applications requiring memory card expansion, redundant CPU support, or multi-CPU configurations, the Q06UDEHCPU (Universal Enhanced High-speed model, 60,000 steps with memory card) is the recommended alternative within the same MELSEC-Q platform. When migrating from a legacy Q06HCPU, note that the Q06UDVCPU’s built-in Ethernet port eliminates the need for a separate QJ71E71-100 Ethernet module, freeing a base slot for additional I/O or a second communication network.
Troubleshooting Guide
If the Q06UDVCPU’s ERR LED illuminates solid red after power-up, the most common causes are an incorrectly seated module (re-seat by pressing firmly until the lock clicks), a base unit power supply module delivering insufficient 5 VDC current (verify total module current draw does not exceed the Q61P or Q62P rating), or a corrupt program memory (clear the CPU memory using GX Works2’s «Clear All» function and reload the program). If the ERR LED flashes rather than stays solid, this typically indicates a watchdog timer timeout caused by a scan time overrun — check for unintended infinite loops in the ladder program or excessively long FOR-NEXT iterations. For Ethernet communication faults, verify that the IP address configured in GX Works2 network parameters does not conflict with another device on the subnet, and confirm the Ethernet cable is Category 5e or higher with a shielded RJ45 connector. If the CPU enters STOP mode unexpectedly during operation, check the special register SD0 (Latest Self-Diagnostic Error) and SD1 (Error Step) in GX Works2’s device monitor to identify the faulting instruction.
Frequently Asked Questions
Q: Can the Q06UDVCPU be used as a direct replacement for the Q06HCPU without modifying the base unit or I/O modules?
A: Yes. The Q06UDVCPU is physically and electrically compatible with all MELSEC-Q base units that previously housed a Q06HCPU. Existing I/O, analogue, and communication modules remain unchanged. The user program must be re-verified in GX Works2 after substitution, and any QJ71E71-100 Ethernet module previously used can be removed since the Q06UDVCPU has Ethernet built in — the freed slot can be repurposed for additional modules.
Q: What is the maximum scan time achievable with the Q06UDVCPU in a typical 6,000-step program?
A: For a typical 6,000-step program using standard sequence instructions (LD, OUT, MOV, CMP), the Q06UDVCPU scan time is approximately 0.5 to 1.5 ms depending on the mix of basic and floating-point instructions. Programs with heavy use of DMOV, DFLOAT, or communication FBs will have longer scan times. The actual scan time can be monitored in real time using GX Works2’s «Scan Time Monitor» function via the built-in USB or Ethernet port.
Q: Does the Q06UDVCPU support CC-Link IE Field Network?
A: The Q06UDVCPU does not have CC-Link IE Field Network built in. CC-Link IE Field communication requires a dedicated QJ71GF11-T2 CC-Link IE Field master/local module mounted in the base unit. The Q06UDVCPU fully supports this module and can manage up to 120 remote stations per QJ71GF11-T2 module installed.
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