>G'Day everyone,
>
>Looking for guide to VFP Modbus RTU development.
>
>
>Could any one can help to show an example on how to request data from Modbus RTU ? and how to calculate the CRC16 and checksum.
>
>Thanks and best regards,

on second, sys(2017) or perhaps compile some C if specific implementation is needed.
on first, no idea.