This utility sends Modbus RTU requests over tcp to read pv1800 inverter's holding registers and writes them to stdout as a json message.
run inverter-cli --help for options.
The Dockerfile provided builds and creates an image that runs inverter-cli and broadcast the messages over the network using nc.
inverter-cli -a "${INVERTER_HOST}" -p "${INVERTER_PORT}" | nc -u -b "${BROADCAST_ADDRS}" "${BROADCAST_PORT}"