I have now switched my dBus script for integrating a PV inverter into VenusOS to a virtual device using Node-RED.
My Shelly 1PM Gen3 returns the current power output (payload.switch0.apower) as a negative value! I need to multiply this value by -1 using JSONata:
Did I do something wrong, or is it normal for the Shelly to deliver negative power values when installed as a PV inverter?