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Why did wind sensor canot received the data via modbus serial port.
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if in mango,
What do this mean "nd I test serval times.and display"Exception from modbus master:CRC mismatch:given=1536,calc=8432"
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This means that you got a response but the CRC did not match so the message was discarded.
A CRC of 1536 was given but the calculated CRC was 8432. This indicated that the message might have been corrupted.
If you don't know what a CRC is then you should do some research on the Modbus spec and will probably clear that up.
Joel.
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yes,I change to wind sensor adapter from rs 422 to rs485 adapter,and display above the message."exception from modbus master:CRC mismatch:given=1536,calc=8432"
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How to setting can display normal value.
will not display"Exception from modbus master:CRC mismatch:given=1536,calc=8432"
BR
Attachment: download link
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I don't think that's a question that anyone here can answer. It could be noise on your network or something else.
Joel.
