Problems integrating solis inverter (via solis cloud)

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Hi all,
First time poster and wondering if someone can help me with this. I’m using Intelligent Octopus Go with a Zappi, but if the schedule suddenly starts outside of the usual overnight charge hours, it has been draining my house battery. I was advised to get home assistant and now have this set up with a Raspberry Pi, with the Zappi integrated no problem. Trying to integrate the solis modbus is proving tricky and although I have the IP address of the datalogger (as on my solis cloud app), when I try to input it, I get this message. Unknown error occurred.

Solis integration problem image
Solis integration problem image1623×704 106 KB

Has anyone come across this before, please (and hopefully resolved it)?
Perhaps the port number is wrong, the field was pre-populated with 502.
Any advice gratefully received.

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You may have a datalogger that does not expose a local address. There are only specific models that have this legacy feature.

What model of datalogger do you have?

I have one that is incompatible, and was toying with a hardware based solution, but I’ve literally just finished a SolisCloud API based pyscript based solution that converts dispatch windows into charging periods. Take a look here:

It is obviously provided without warranty :wink: . I’m not a coding expert so have heavily relied on AI to generate the code against my logic.