Rehau modbus nea smart

HI. i want to connect my nea smart system trought modbus. i see that it’s possible with knx modbus gateway. i want to connect rehau with waveshare ethernet .

this is rehau setting:

Gateway KNX Modbus slave

Address slave 240 o 241
Baud rate 38400 Bits/s
Parity none (1 stop
bit)
Sequence byte after MSB
first address “0”

this is waveshare setting

this is pool error

this is thing configuration

Can someone help me please??