VRM not displaying BMS Cell Data

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miya asked Dec 27, '20

VRM not displaying BMS Cell Data

Hi All

I have 3 Victron Lithium batteries, BMS, Cerbo, BMV712 - all connected and working perfectly.

Set up VRM and every, again, working perfectly, I am getting all the data coming through.

However, there are 2 widgets, showing no data - they relate the BMS.

See attached picture - any thoughts what the BMS is not sharing this with VRM ?

Thanks

Tim

cerbo gx VRM Lithium Battery BMS

screenshot-2020-12-27-at-151209.png (122.6 KiB)

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Matthias Lange - DE answered · Dec 27, 2020 at 04:06 PM

What BMS do you have? No Victron BMS provide that data.

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miya commented · Dec 27, 2020 at 04:50 PM

Hi Matthias

It is the Victron VE Bus BMS - https://www.victronenergy.com/battery-management-systems/ve-bus-bms.

Do you know if the BMS should show in the Device List on the VRM ?

Thanks

Tim

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bathnm miya commented · Dec 28, 2020 at 03:03 PM

No it does not. You can also only get the cell details from BlueTooth / VictronConnect.

The three wire interface between the batteries and BMS only carries a charge disconnect and load disconnect signal.

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miya bathnm commented · Dec 28, 2020 at 03:05 PM

Many thanks Bathnm

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Modifications Space

Node Red Space

Answer 1 · 2020-12-27T16:24:48Z

Ingo answered · Dec 27, 2020 at 04:24 PM

I think it's BMS dependent. The VRM portal facility is there but if your BMS doesn't publish it then it will stay empty. Here is Freedomwon that does publish the data - no idea why it's intermittent on the one but still, it's there.

1609086261801.png (23.1 KiB)

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