ABB/Fimer Modbus TCP with ETHERNET expansion board

Hi,
I’ve a TRIO-7.5-TL-OUTD Inverter with the ETHERNET expansion board. This board offers Modbus TCP. With the Modbus Scanner I can connect to Modbus, too.
Unfortunately I’ve no register mapping for this.
I already asked Fimer about the mapping. From this side I got just the info that based on sunspec. But the register mapping doesn’t look like sunspec.
Additional questions keep unanswered by Fimer.

Here are the expansion board:
FIMER_ETHERNET expansion board_Quick Installation Guide_EN_RevC (1).pdf

Here are screenshots from the registers:

May anyone help me to connect the Inverter to HA with Modbus TCP ?

Hello,

I have the same problem with the same hardware, but no solution to the problem.

Do you have an idea now?