Jejpi23 Posted September 27, 2022 Report Share Posted September 27, 2022 Hello i have a problem my plc sends a command (pic1) on modbus but the sensor that is on the other end wants other crc (pic2) how to change crc bits ? Quote Link to comment Share on other sites More sharing options...
Gabriel Franco Posted September 28, 2022 Report Share Posted September 28, 2022 I don´t understand what you need. As I see, it is modbus protocol, and checksum (CRC) is automatically added by PLC, calculated right the way stated by the standard Quote Link to comment Share on other sites More sharing options...
ORSO2001 Posted September 28, 2022 Report Share Posted September 28, 2022 i tried to calculate tha CRC of your data 01 03 08 29 00 0A and I have had as reult 65 16...so exactly what the external sensor is expecting...from where and using what did you record the 16 65? Quote Link to comment Share on other sites More sharing options...
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