This Inovance service manual provides troubleshooting procedures for small PLC models H1U‑XP, H2U‑XP, H3U and HMI series IT 5000/IT 6000.
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.
The ERR light flashing or staying on signals a fault condition; refer to the error‑code list (e.g., D8063) for details.
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.
Possible causes include unreasonable instruction parameters or component range errors; check error codes D8060‑D8069 and use AutoShop fault monitoring to diagnose.