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trittonac
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2021-06-01 09:58:04+00:00

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  • Posted a comment on discussion Engineering 🇬🇧 on CODESYS Forge

    Hello, I am using the demo version of codesys ARM SL and testing the modbus RTU. I encountered the error where the package on the bus is correct, but codesys returns CRC FAIL. I am using baud rate 115200, no parity, 8 data bits, 2 stop bits. The signal in the attached image is a response to reading input registers (function code 4), length 2. The address of the slave is 0x07. I calculated the CRC and it is correct, also shown in the attached image. I am aware that the slave devices' response has...

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