tarsel

Thanks Porter, I did not want to alter the original library either. I will implement this and report back. Thanks for the assistance.

Hi Porter Great work, this looks excellent, thanks for sharing it. I am currently writing a development application to test an embedded device where we use Modbus to externalise values. Due to memory / power constraints we are probably going to create a custom Modbus version where the transmission protocol is RTU, but we want to use the LRC (ASCII) to check the transmission contents. It looks like I can do this using your library by adding another type of ADU class, inheriting from MB_ADU.lvclass. I have not used classes much at all yet, so I would be grateful if you could tell me whether I am on the right track. Thanks Ray