Fix inverter and measured power for older SolaX MIC inverters

[Kars-de-Jong]

Correct inverter and measurement entities for older SolaX MIC inverters

• The Measured Power entity for Gen1 and Gen2 MIC inverters is actually the Inverter Power.
• The Inverter Power entity for Gen1 and Gen2 MIC inverters is actually the Measured Power
• The Measured Power Lx entity for Gen1 X3-MIC inverters is actually the Lx Inverter Power.

Enable house load entity for MIC inverters

House load can be calculated for MIC inverters that have a meter connected.

Enable Inverter Power Lx entities for X3 Gen2

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Tested with a Gen1 X3-MIC with an emulated SDM230 meter connected.

Please note that this change breaks the history of the existing entities. Not sure if an upgrade script is possible / needed.

[Kars-de-Jong]

@wills106 Could you please have a look at this?

[mrichtarsky]

Thanks @Kars-de-Jong for the fix, I will test this locally

[mrichtarsky]

@Kars-de-Jong Looks good to me. Except for Measured Power L1, which still does not make sense to me (i.e. it stays at 0 even when charging with 11kW). But that might be a problem of the inverter.

[Kars-de-Jong]

@mrichtarsky
It looks like the entities you want ("Inverter Power Lx") are not mapped on Gen2, but when I look at the documentation you provided they should be available at the same address as Gen1.
I will update this PR to include Gen2.

[Kars-de-Jong]

@mrichtarsky Done. Could you please test?

The fact that "Measured Power L1" is 0 in your case might indicate a problem with your kWh meter. Maybe the L1 CT is not connected properly?

[wills106]

Thanks for working on this. Once mrichtarsky has confirmed the latest changes are ok I'll merge it.

[mrichtarsky]

Thanks @Kars-de-Jong!
Currently it looks like this

Inverter Power L1-3 are zero although current and voltage are not, perhaps the value must be calculated and is not available directly?

[Kars-de-Jong]

@mrichtarsky Thanks for testing again.

I see now in your original issue report that you already tried reading 0x410, 0x411 and 0x412 and that they always return 0 in your case.
That's quite odd, those addresses match with the documentation of X3-MIC Pro-G2 V2.7.
In that case I'm at a loss. You can't derive active power from the other available values, only apparent power (which is not the same).

All I can suggest is for you to try and read all input registers using pymodbus or for instance mbpoll and see if we can find values on addresses that match with the individual phase powers.