Mastodawn

Internet friends, do any of you have a Fronius Gen24 series solar inverter on the same network as a Linux computer?

EDIT: Thanks everyone, I've got a few solid samples back now! Much appreciated

If so, could I trouble you to please run the following two commands and send me back the output?

avahi-browse -rv _Fronius-SE-Inverter._tcp

avahi-browse -rv _Fronius-SE-SmartMeter._tcp

(If you've not got the "Smart Meter" addon then the second command might not do anything, not to worry if so.)

Is all in the aid of reverse engineering for interoperability. If what I'm trying to do works then it'll be open sourced. 💪

Boosts for reach appreciated!

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deepfryed Feb 27

@projectgus are you trying direct access over tcp instead of going through tcp + modbus ?

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Gus Feb 27

@deepfryed Not exactly. We have a fronius wattpilot EV charger, which polls the web API of the Fronius inverter to do solar charging and also to prevent tripping the main breaker if the grid draw is too high.

We're about to get a different solar setup installed. So I want to make a little server that presents power data from home assistant as if it was a fronius inverter, enough to keep the wattpilot happy.

Our inverter is old so it uses their simple UDP broadcast discovery system, but I thought I might have a crack at implementing mDNS instead. But all I knew was what mDNS services the wattpilot sends queries for, and that's not enough for it to show up.

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deepfryed Feb 27

@projectgus I don't have an EV, but I have a mixed battery household. Old powerwall and new sigen, I have setup home assistant to monitor grid use and balance the battery charging appropriately in the 3hr free window so total draw doesn't exceed 58A. Can't you control watt pilot from HA, invert responsibility ?

Nevertheless, interesting "middleware" to work on.

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Gus

@deepfryed Probably possible, but the controls that way seem a bit clunky compared to how it works now. Will see though, that might end up being the way.