Here is how to troubleshoot and fix this issue once and for all. 1. Check Your Hardware Wiring (The Most Common Culprit)
If you are using a cheap USB-to-RS485 converter, the chipset (often counterfeit Prolific or CH340) may struggle with high-speed data. modbus poll bytes missing error fixed
A single mismatch here will cause the Master to misinterpret the incoming data stream as "missing" or "corrupt." Here is how to troubleshoot and fix this
Industrial environments are noisy. If your Modbus cable is running parallel to high-voltage power lines or VFD (Variable Frequency Drive) cables, the "missing bytes" are likely being "killed" by interference. modbus poll bytes missing error fixed