Hi. A year ago, I had a Stiebel Eltron WPE-I 07 H 400 brine-to-water heat pump with underfloor heating installed in my house. Additionally, I received the ISG from Stiebel Eltron with firmware v12.2.3. I can also read data via Modbus on my test installation of HA (I prefer not to use my active HA instance for testing).
Now to my problem: I would like to adjust the temperatures via HA in the web interface and later also through a thermostat. Unfortunately, I couldn’t find the relevant information in the documentation for the Modbus registers (https://www.stiebel-eltron.ch/content/dam/ste/ch/de/downloads/kundenservice/smart-home/Modbus/Modbus%20Bedienungsanleitung.pdf from page 38 onwards).
At the moment, I can read the current water temperatures for my domestic hot water as well as the outdoor temperature (Hot water register 5999, outdoor temperature register 6099. The ISG starts counting at 1).
Heres my current modbus config:
- name: Stiebel_Eltron_Heizung
type: tcp
host: 192.168.50.39
port: 502
delay: 0
message_wait_milliseconds: 30
timeout: 5
sensors:
- name: 'Boiler Temp Oben'
slave: 1
address: 6018
input_type: input
unit_of_measurement: °C
device_class: temperature
scale: 0.01
precision: 1
- name: 'Boiler Temp unten'
slave: 1
address: 6019
input_type: input
unit_of_measurement: °C
device_class: temperature
scale: 0.01
precision: 1
- name: 'Aussentemperatur'
slave: 1
address: 6099
input_type: input
unit_of_measurement: °C
device_class: temperature
scale: 0.01
precision: 1
- name: 'Warmwassertempertatur gemittelt'
slave: 1
address: 6100
input_type: input
unit_of_measurement: °C
device_class: temperature
scale: 0.01
precision: 1
- name: 'Sollwert bei 17C° Aussentemperatur'
slave: 1
address: 7028
input_type: holding
unit_of_measurement: °C
device_class: temperature
scale: 0.01
precision: 1
- name: 'Sollwert bei 10C° Aussentemperatur'
slave: 1
address: 7029
input_type: holding
unit_of_measurement: °C
device_class: temperature
scale: 0.01
precision: 1
- name: 'Sollwert bei 5C° Aussentemperatur'
slave: 1
address: 7030
input_type: holding
unit_of_measurement: °C
device_class: temperature
scale: 0.01
precision: 1
- name: 'Sollwert bei 0C° Aussentemperatur'
slave: 1
address: 7031
input_type: holding
unit_of_measurement: °C
device_class: temperature
scale: 0.01
precision: 1
- name: 'Sollwert bei -5C° Aussentemperatur'
slave: 1
address: 7032
input_type: holding
unit_of_measurement: °C
device_class: temperature
scale: 0.01
precision: 1
- name: 'Sollwert bei -15C° Aussentemperatur'
slave: 1
address: 7033
input_type: holding
unit_of_measurement: °C
device_class: temperature
scale: 0.01
precision: 1
- name: 'Sollwert bei -25C° Aussentemperatur'
slave: 1
address: 7034
input_type: holding
unit_of_measurement: °C
device_class: temperature
scale: 0.01
precision: 1
- name: 'Kühlbetrieb Einschalttemperatur'
slave: 1
address: 7095
input_type: holding
unit_of_measurement: °C
device_class: temperature
scale: 0.01
precision: 1
- name: 'Kühlbetrieb Ausschalttemperatur'
slave: 1
address: 7096
input_type: holding
unit_of_measurement: °C
device_class: temperature
scale: 0.01
precision: 1
What else should I do so that I can send the temperature value of a room (a room sensor is available) to the system? I will be getting a cooling circuit installed later on, so I would like to be able to switch between heating and cooling / adjust the values accordingly. I hope you can help me.
Best regards,
Patrick
