Hi,
I have a similar configuration. Tripower 9000, Boy Storage 5.0 and Home Manager 2.0. The best way to collect data is with modbus. OpenHab is able to comunicate directly with these devices. I wanted to write a binding for that but we don’t need that. Here are my configuration files for modbus. Maybe you can use some stuff from it.
The list of modbus registers is availible from the SMA website. You have to enable modbus on the tripower and on the boy storage and activate the modbus binding.
Modbus SMA.zip.txt (6.1 KB)
(it’s a zip file, remove the .txt from filename).
Greetings
Markus