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andresarmento / modbus-arduino

A library that allows your Arduino to communicate via Modbus protocol, acting as a slave (master in development). Supports serial (RS-232, RS-485) and IP via Ethernet (Modbus IP).
BSD 3-Clause "New" or "Revised" License
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Coils go to 0 at start regardless of what the set value is #58

Open Ferryistaken opened 3 years ago

Ferryistaken commented 3 years ago

I have this block of code in my setup(), which should theoretically set all coils to 1, but when I turn on the arduino the coils go to 0, and only go to the correct value when I send a modbus command to the arduino (even a read). Is there something that I am not understanding or is this a bug?

    const bool defaultCoilValue = 1;
    for (int i = startCoilAddress; i <= numberOfCoils; i++) {
        mb.addCoil(i, defaultCoilValue);
        mb.addIsts(i, defaultCoilValue);
    }