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Product Description
The Mitsubishi Q173CPUN, a MELSEC-Q series CPU module, delivers advanced motion control with a 14,000-step program capacity and 4096 I/O points, operating on 5V DC with 1.25A current consumption. Configurable for backplane or rack mounting, it achieves 0.88ms cycle speeds and integrates via Ethernet, RS-232, and USB. Programmable in Ladder Diagram, Structured Text, or Relay Symbol languages, it supports remote I/O and manages up to 32 axes with the Q Motion system, ideal for complex motion applications.
Is Your Device Showing These Signs?
The Mitsubishi Q173CPUN commonly experiences issues related to program corruption requiring memory resets and PLC reprogramming. Communication errors arise due to faulty Ethernet port configurations or corrupted buffer memory, demanding firmware updates and parameter verification. Backplane connectivity problems manifest as module recognition failures; inspect the backplane connector and replace damaged components. Power supply fluctuations cause CPU faults; ensure stable voltage and replace the power supply unit if necessary. Software compatibility issues with older GX Developer versions necessitate upgrades to GX Works2 or GX Works3 for proper PLC programming and monitoring.
Technical specifications
The Mitsubishi Q173CPUN is a MELSEC-Q series CPU module for advanced motion control, featuring a 14,000-step program capacity, 4096 I/O points, and 0.88ms cycle speeds. It supports Ethernet, RS-232, and USB, is programmable in multiple languages, and manages up to 32 axes with the Q Motion system.
Our Repair Process for the
Q173CPUN
Our repair process for the Mitsubishi Q173CPUN begins with addressing program corruption through memory resets and PLC reprogramming. Communication errors are resolved via firmware updates and meticulous parameter verification, focusing on Ethernet port configurations and buffer memory integrity. Backplane connectivity problems require a thorough inspection of the backplane connector, with damaged components replaced immediately. CPU faults stemming from power supply fluctuations are corrected by ensuring voltage stability and replacing the power supply unit when needed. Software compatibility issues are mitigated by upgrading to GX Works2 or GX Works3 for proper PLC programming and monitoring.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.


Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.
Buying Options
To receive a quote within 2 hours, please provide us with the details of your requirements. Our team will promptly review your request and send you a custom offer.

Ships from Rochester, NY