Victron Venus GX 2.81!

IOT (The internet of things) GX Devices
1

I updated my Home Assistant and started getting strange error “Pymodbus: victron: Exception Response(131, 3, IllegalAddress)”

Anyhow, after troubleshooting and blaming Home Assistant, I started looking into an “IlligalAdress” part of the error.
Well, truth be told, my Venus GX has been setup to automatically download latest version and then I came up to the fact that it has upgraded it self from 2.73 to 2.81. Nice :slight_smile:

Well, in the new version, register for PV Current has been removed and that is what has caused the error shown above.

So

      - name: "PV Current"
        data_type: int16
        unit_of_measurement: "A"
        slave: 245
        address: 777
        scale: 0.1
        device_class: current

is no longer valid as it doen’t exist anymore.

I have confirmed this by checking the newest Modbus register excel sheet from victron
CCGX-Modbus-TCP-register-list-2.80.xlsx (47.3 KB)

Hope it helps someone who encounters the same problem :slight_smile:

2

Yes, you would not believe it. I have been working on this bug for two days already. It’s been reported already. It is a result of this.

It breaks the range. There is now a gap between 776 and 778. That is the bigger issue. The current must now be calculated from the power and voltage (registers 776 and 789).

3

Yes, I saw now…

Well I=P/V, so all of this is much of a muchness in my opinion…calculated or obtained from a sensor (if MPPT has a sensor or also calculates), its the same thing :face_with_diagonal_mouth:

Or am I missing the “amazing” benefits of removing this address from the modbus register?

4

No, register should not have been removed. It makes it impossible to fetch the whole range. At the very least it should have a zero in the register (to fix range fetching), but the idea is to do one better.