H3 Hybrid Inverter MODBUS Protocol

[v1lad]

Hi All ! can anyone explain the physical meaning of the raw data ?

Meter powerR 31026
Meter powerS 31027
Meter powerT 31028
Load powerR 31029
Load powerS 31030
Load powerT 31031

I think I understand how Meter shows this. Positive figures are Feed-In, negative figures are grid consumption, but I can not understand what is Load. or in other words, I understand what load is, but I don't understand the values that are shown.

The picture shows the actual numbers I get.

Regards,
Vlad.

[Bobinho]

If I understand things correctly:
Load is power consumed by the house, should always be positive and is not measured but calculated as sum of those two:
- Meter is measured at grid - home installation joint; negative -> export to the grid
- Inverter Power is power of inverter's "On Grid" inlet; positive -> inverter is a source of power, negative -> inverter consumes power (that can happen during battery charging periods or when batteries are flat and sun is gone)

Screenshotted Meter values look quite normal. If there is no surplus from solar (minus battery charging), in Self-Use mode inverter tries to keep a sum of phases Meter Power around 0 but it always fluctuate.
Prefectly rounded values for screenshotted Load may suggest possible misinterpretation of units (if You do conscious rounding, it is not a case ). Also 10kW seems to be quite a lot for average household if You do not have electrical heating.

Is it NathanMarlor integration or Your own?
Have You compared it with cloud recordings?

[v1lad]

Seems you are right and I have mistake in decoding of Load figures.
I will double check again.
I have very simple integration based on ESP8266. See here
https://github.com/mypi-home/HA-ESPHome ... ter-Modbus