Integration Solar inverter huawei 2000L

Hi,

I can’t conect with my HA to my Huawei KTL30M3.

I got always: Reading from the inverter failed.
I use the IP from my inverter in my home network
I use ID: 0 , 1 or 2
Modbus is activate and the Port 502 is open.

Can anybody help me please?