backup power and reading from the meter added

[dzarth]

Dear mkaiser, I added some values for the backup loads and some power reading from the smart meter. Source for the undocumented addresses is: https://www.photovoltaikforum.com/thread/166134-daten-lesen-vom-sungrow-wechselrichtern-modbus/?pageNo=13

It is tested OK with my SH10RT-V112

Best regards, Dirk

[ViktorReinhold]

Hello dzarth,

I tested your PR and get these values for Backup phase power:

I have also an SH10RT-V112. Are your values in the same 65 kW range?

The value for Meter active power seems valid:

[dzarth]

Hi Viktor, you are right, backup power can become negativ so I changed it to a singed int16. Can you please give it a try?

Many thanks, Dirk

[ViktorReinhold]

Hi Dirk,

now it makes sense and it matches with the values from the WiNet-S Device Monitoring page.

Thank you, Viktor

[ViktorReinhold]

Just for completeness: the 'Total Backup Power', basically the sum of all three backup power phases can be found under the register address 5725.

      - name: Total backup power
        slave: !secret sungrow_modbus_slave
        address: 5725
        input_type: input
        count: 1
        data_type: int16
        swap: word
        precision: 0
        unit_of_measurement: W
        device_class: power
        state_class: measurement
        scale: 1
        scan_interval: 10

I tested it successfully on my SH10RT-V112.

[dzarth]

Added, thanks a lot, Viktor :)

[mkaiser]

hi dzarth,

thank you for your contribution! Looks pretty good!

Will test it and merge in the next days :)

[mkaiser]

works with my SGH 10 RT :)

The power readings are a bit confusing:

I can only explain that to myself with a loss of 49W (Total DC minus DC Battery Charge minus inverter output)

It looks like the inverter does no load balancing on the three phases (which is not very suprising, because this would increase the costs and has not a large benefit for balanced meters).

I am considering renaming the "Phase x [Voltage | Current|Power]" name to "Inverter Phase x [*]" to make that more clear.

[elektrinis]

This is super cool, thank you. Will test it later. BTW my inverter also reports a loss of around 38W. Before firmware update it reported a loss of around 90W, but only when sun was above horizon. This is weird.

[elektrinis]

Just wanted to say a huge THANK YOU. Finally I can ditch some cloud-based hardware!

Possible bug? Phases A and B seem to be swapped? Checked the code and can't find a problem.