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  • That looks neat. I seem to recall I had some code for Espruino that did Modbus (there's not much to it - it's just Serial + ensuring you de-assert a pin when you're done transmitting if I recall).

    But personally, I never had a chance to do a PLC. It might have sold a few but I never had enough requests that it seemed it'd be worth the development effort. Probably the best bet now is find an ESP8266/ESP32 PLC device and run Espruino on that. It looks like Shelly have an ESP32 one at least


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