How to you get the energy (kwh) going to and from the batterie by modbus like the vrm shows?

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mrrose83 asked May 12, '22

How to you get the energy (kwh) going to and from the batterie by modbus like the vrm shows?

Hi I using an Multi with an Pylontech. How will i get the energy going to and from the batterie by modbus simular to that what the vrm shows?

Modbus TCP

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Modifications Space

Node Red Space

Answer 1 · 2022-05-12T05:27:10Z

wkirby answered · May 12, 2022 at 05:27 AM

This value is only calculated on VRM and it is not available locally, so no Modbus register is available either.

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Answer 2 · 2022-05-16T11:40:29Z

lifeingalicia answered · May 16, 2022 at 11:40 AM

unit 100 register 840 - 846

best to download full register list from here

https://www.victronenergy.com/support-and-downloads/technical-information

1652701081385.png (14.6 KiB)

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Answer 3 · 2022-05-17T08:05:24Z

jeanphi500 answered · May 17, 2022 at 08:05 AM

I looked for the same information and it was not available using the modbusTCP interface.

So instead I use MQTT. I subscribed to the energy fields available on the vebus. They are labelled vebus/275/Energy/InverterToAcIn1 and vebus/275/Energy/AcIn1ToInverter

I'm getting updates coming in but the value does not seem correct.In the whole night (discharge) the reported value only changed by 0.08kWh. While the real number should have been around 4kWh.
I'm not sure what's happening...

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