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Product Description
The Mitsubishi FX3U-64MTDSS is a compact and powerful 24V DC powered base unit from the FX Series, featuring RS-422 communication for reliable data transfer and supporting up to 384 I/O points with expansion. It includes 32 DC inputs, 32 transistor outputs, 64K step program memory, and screw-clamp terminals for secure connections, all within a 1.00 kg DIN rail mountable design.
Is Your Device Showing These Signs?
The Mitsubishi FX3U-64MT/DSS PLC commonly experiences issues such as program corruption requiring firmware re-installation, I/O module failures leading to communication errors and system downtime, power supply malfunctions causing erratic behavior and data loss, and physical damage to the terminal block resulting in wiring faults and signal interruption. Addressing these issues involves troubleshooting the PLC's ladder logic, replacing faulty I/O modules, verifying and potentially replacing the power supply, and repairing or replacing damaged terminal blocks to restore proper functionality and prevent further system instability. Regular maintenance and backups are crucial for preventing these problems.
Technical specifications
The Mitsubishi FX3U-64MTDSS is a compact 24V DC base unit with RS-422, supporting up to 384 I/O, featuring 32 DC inputs, 32 transistor outputs, 64K step memory, screw-clamp terminals, and DIN rail mounting.
Our Repair Process for the
FX3U-64MTDSS
Our repair process for the Mitsubishi FX3U-64MT/DSS PLC begins with a comprehensive diagnostic evaluation to pinpoint the root cause of the malfunction, which includes a thorough examination of the PLC's ladder logic, I/O modules, power supply, and terminal blocks. Upon identifying the issue, we proceed with the necessary corrective actions, such as firmware re-installation to rectify program corruption, replacement of defective I/O modules to resolve communication errors, power supply verification and replacement if needed to eliminate erratic behavior and data loss, and meticulous repair or replacement of damaged terminal blocks to restore proper wiring and signal integrity. Every repair concludes with rigorous testing to guarantee the PLC operates within specified parameters and to prevent future system instability, ensuring a return to optimal performance.
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