Hi Waleed,
Yes Modbus TCP. Thanks got it. Works like that:
climates:
- name: "Start Brauchwasser"
address: 9
input_type: input
count: 1
data_type: int16
max_temp: 50
min_temp: 40
offset: 0
precision: 1
scale: 0.1
target_temp_register: 60
temp_step: 1
temperature_unit: C