Need sensors Battery Power

[vind11]

There is no "Battery Power" register in the inverter SRNE. I am trying to get it by next way:

• name: "Battery Power"
  class: "power"
  state_class: "measurement"
  uom: "W"
  rule: 2
  digits: 3
  scale: 0.1
  registers: [0x0101, 0x0102]
  sensors:
  - registers: [0x0101]
  multiply:
  registers: [0x0102]
  icon: "mdi:solar-power-variant"

. but since 1 of the parameters can be negative - the result does not work. Is there any way to solve this?

[davidrapan]

Hi @vind11, what do you mean by doesn't work? Be more specific please.

[davidrapan]

Which register is voltage and which is current?

[vind11]

101 voltage
102 current

[davidrapan]

Try to set rule: 1

Make sure you did not add any properties twice as you did in your previous code example. 😉

[vind11]

Try to set rule: 1

not working !

[goldserve]

Any update on this? I'm trying to calculate values as well so I could learn a thing or two.

[vind11]

Unfortunately, there is none yet. You can make a template, but I would like a more elegant solution. I'm just not a programmer.

[davidrapan]

      - name: Battery Power
        class: "power"
        state_class: "measurement"
        uom: "W"
        rule: 1
        scale: 0.1
        digits: 2
        registers: [0x0101, 0x0102]
        sensors:
          - registers: [0x0101]
          - operator: multiply
            signed:
            registers: [0x0102]

[vind11]

it's working
thank you !

[vind11]

SRNE_ASF.zip
this is working configuration file for SRNE inverters. You can add to you project

[davidrapan]

Do you also have modbus documentation?

[vind11]

https://github.com/Gizzo/ESPHome_HF2430U60/blob/main/Modbus_References/SRNE.Solar.Charge.Inverter.MODBUS.Protocol1.96.pdf