E2E statistic via modbus for Sun2000-4, 6KTL, Luna2000 battery and DDSU666-h

Hi @BetterMing , Thank you for the answer.
I mentioned that I already can read data from inverter. Btw, through your proposed way, the reseller is already connected. Contractualy, we may not use this connection.
I was asking to which device I need to connect to read all data from my setup, including battery and powersensor. Your page only mention inverter. And also, in case data is available from battery through inverter (which I actually expect), what addresses to use to read data from battery? I can't find this information.

Meanwhile I could find new link with addresses from powersensor (DDSU666-h). See link : https://github.com/basking-in-the-sun2000/solar-logger/blob/master/Huawei.py. So now, I only need addresses for battery data.
And offcourse, my inverter support battery.

For those looking for an answer:
- Inverter contains all data. Including for DDSU666-h and Battery.
- Contact Huawei support to get the latest documentation. Not any of the documentation that I could find on the internet contains all the information I was looking for. The one from support contained most of the modbus data but not even all.
- In case you want to connect to Modbus tcp. Don't follow the instruction earlier in the post. Contact Huawei support. Request for the latest WIFI / Ethernet Dongle software (V100R001C00SPC120). Once the dongle is updated, you can request data via modbus TCP via FE connection.