Multiplus 2 via Venus and Modbus Pylontech charge state

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happytommi asked May 26, '21

Multiplus 2 via Venus and Modbus Pylontech charge state

Hi!

What register is for getting the charge state of the battery via modbus. I tried 30 but the value is always 0 ...

Modbus TCP

2 |3000

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happytommi answered · May 27, 2021 at 01:12 PM

Solution: It is Modbus register 266 on unit ID 225

1

2 |3000

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wkirby ♦♦ commented · May 27, 2021 at 03:12 PM

That would also work. It is strange how you have no data on the system SOC (register 843).
Glad you have the solution.

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Modifications Space

Node Red Space

Answer 1 · 2021-05-26T14:38:08Z

wkirby answered · May 26, 2021 at 02:38 PM

Use register 843.

2 |3000

Attachments: Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Answer 2 · 2021-05-26T17:03:34Z

happytommi answered · May 26, 2021 at 05:03 PM

No! That didn't work. Always 0

2

2 |3000

Attachments: Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

wkirby ♦♦ commented · May 27, 2021 at 09:58 AM

That's wierd. I am using address 843 to read my Pylontech SOC.
Did you set slave address to 100?

As an example, this is the configuration in my Homeassitsant modbus file:

- name: "Battery Level"

scan_interval: 10

unit_of_measurement: "%"

slave: 100

address: 843

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happytommi wkirby ♦♦ commented · May 27, 2021 at 01:14 PM

Thank you for your information. Meanwhile I found the solution by myself :-) See my last answer...

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