We need a PHP Extension (in C/C++) for the Modbus protocol (only the Master, not Slave).
Use this library (or better if you know): [url removed, login to view]
This library has many functions but we are interested in only 3 of them:
Like this functions you have to develop 3 functions in the extension:
4 freelancers estão ofertando em média $75 para esse trabalho
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