Swap Words and Swap Bytes for numbers #17
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This was referenced Oct 2, 2025
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The modbus protocol supports only 16 bit values (word).
By default the byte order is Big Endian
In order to be able to support 32-bit or text, there are several different implementations in place.
In most cases, the default configuration returns correct values. However in exceptional cases, the byte order is wrong.
In this case you can swap the byte order of the modbus data before passing it to mqtt.
This will exchange the bytes within the word.
Additionally you can change the word order when dealing with 32-bit(long).
In this case, the content of the words is not changed, but the lo/high words are exchanged.
So, if you swap words and byte, you get Little Endian.
Mixtures are also possible.
fixes modbus2mqtt/server#91
fixes modbus2mqtt/server#90
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