Connection drops with with Modbus Proxy / Huawei Solar / EVCC

[Kugelfang666]

Hi all,

I have quite a complex setup:

Inverter 1 (with Battery + S-Dongle)
Inverter 2 (cascaded with Inverter 1)
Huawei Wallbox

Home Assistant with ModbusProxy connected to S-Dongle on Inverter 1

Huawei-Solar-Integration connected to Modbus Proxy
EVCC connected to Modbus Proxy

I see frequent connection drops in the form of spikes in the sensor values in all curves. These are going away the moment I disable EVCC. Could it be that there is some blockage or so by both integrations querying the S-Dongle?

Anyone that has some recommendations on how to optimize my setup? I’m not so sure about the right settings for connection time and connection timeout on the Modbus proxy

[tmenguy]

Sorry no clue :) ... but this is the setup I was envisioning soon to move to EVCC (or do all by automation inside HA) ... so interested in your problem.

[wlcrs]

I'm surprised you are getting 0 values. I would expect some connection drops to occur, but HA and the integration should handle it gracefully like "value missing" (and thus ignored) instead of logging a 0.

Feel free to create a bug report where you include debug logs during which these 0 values manifest themselves + the exact timestamps of these 0 values in your history (cfr. https://www.home-assistant.io/integrations/history/#exporting-data-from-the-history-panel )

[Kugelfang666]

I think the 0-drops occurs since i have a calculated value in the graph and this drops to 0 when the source sensor from the inverter goes to unavailable. Sorry if this caused some confusion

[wlcrs]

Make sure to use the availability feature in your computed sensor to prevent this from happening.