Inovance H1U-XP/H2U-XP/H3U PLC and IT 5000/IT 6000 HMI Common Faults Service Manual

About this manual

The Inovance service manual addresses common faults for its small PLC series (H1U‑XP, H2U‑XP, H3U) and HMI series (IT 5000, IT 6000). It is intended for market service personnel to efficiently diagnose and resolve field issues.

It is organized into a PLC fault section covering running abnormalities, AutoShop backend problems, indicator‑light behavior, I/O, serial, CAN and Ethernet communication, and expansion modules, followed by an HMI fault section with similar topics, plus Q&A and an appendix of error codes. This manual is written in Chinese.

What's inside

• PLC Faults
• Running Abnormalities
• AutoShop Backend Issues
• Indicator Lights
• Communication (Serial, CAN, Ethernet)
• Expansion Modules
• HMI Faults
• Error Code Appendices

Frequently asked questions

What does a flashing or steady ERR light indicate?

The ERR light flashing or staying on signals a fault condition; refer to the error‑code list (e.g., D8063) for details.

How can I identify a CAN communication failure?

The manual lists "CAN 网络无法通信" as a symptom of CAN communication failure and provides related error codes such as D8063.

Why does the PLC not run after downloading an application instruction?

Possible causes include unreasonable instruction parameters or component range errors; check error codes D8060‑D8069 and use AutoShop fault monitoring to diagnose.