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A water treatment plant engineer uses Modbus Poll to read flow meter data over a 500-meter RS485 cable. The error appears randomly every 30 seconds.
The master device waits for more data, hits a timeout, and throws the error. This is not a CRC (Cyclic Redundancy Check) error; it is a . modbus poll bytes missing error fixed
The error rarely means the slave is "bad." It usually means the master (your PC or USB-to-RS485 converter) is not waiting long enough or the physical layer is corrupting the last byte. A water treatment plant engineer uses Modbus Poll
A water treatment plant engineer uses Modbus Poll to read flow meter data over a 500-meter RS485 cable. The error appears randomly every 30 seconds.
The master device waits for more data, hits a timeout, and throws the error. This is not a CRC (Cyclic Redundancy Check) error; it is a .
The error rarely means the slave is "bad." It usually means the master (your PC or USB-to-RS485 converter) is not waiting long enough or the physical layer is corrupting the last byte.