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Integracja z kotłem Valliant VC 186 oraz sterownikiem pogodowym VC400 korzysta z protokołu eBUS. Jako adapter eBUS wykorzystywana jest płytka w wersji 2.2 zbudowana na podstawie strony eBus Adapter 3. Od czasu jego zlutowania (2020) pojawiło się kilka nowszych wersji adaptera, ale nie zamierzam zmieniać, bo działa bardzo skutecznie. Komunikacja z HA jest za pomocą serwera MQTT.

Schemat blokowy

Wygląd płytki adaptera eBus z UART

Oprogramowanie

Korzystam z ebusd uruchomionego na Linuxie (Debian) jako serwis.

Instalacja

Instalacja pakietu ebusd wg instrukcji: link.

Konfiguracja

Konfiguracja w pliku /etc/default/ebusd

#tryb standardowy
#EBUSD_OPTS="--scanconfig -l/var/log/ebusd.log --device=/dev/ttyUSB0 --mqtthost=192.168.0.2 --mqttport=1883 --mqttjson --mqttuser=user_mqtt --mqttpass=pass_mqtt --mqttint=/etc/ebusd/mqtt-hassio.cfg"

#tryb instalatora wi
EBUSD_OPTS="--scanconfig -l/var/log/ebusd.log --device=/dev/ttyUSB0 --mqtthost=192.168.0.2 --mqttport=1883 --mqttjson --mqttuser=user_mqtt --mqttpass=pass_mqtt --mqttint=/etc/ebusd/mqtt-hassio.cfg --accesslevel=install"

Oczywiście wartości mqtthost, mqttport, mqttuser, mqttpass należy ustawić na poprawne.

Aby zmieniać niektóre wartości (krzywa grzewcza, stany liczników gazu) ebusd musi działać w trybie instalatora. Weryfikację, czy dany parametr jest modyfikowalny można sprawdzić w projekcie GIT https://github.com/john30/ebusd-configuration wyszukując odpowieni plik dla instalacji.

Weryfikacja działania ebusd

ebusctl info

dla mojej instalacji komenda zwraca

version: ebusd 24.1.24.1
update check: OK
device: /dev/ttyUSB0, serial
access: install
signal: acquired
symbol rate: 22
max symbol rate: 1441
min arbitration micros: 0
max arbitration micros: 3168
min symbol latency: 0
max symbol latency: 15
scan: finished
reconnects: 0
masters: 3
messages: 432
conditional: 7
poll: 110
update: 16
address 03: master #11
address 08: slave #11, scanned "MF=Vaillant;ID=BAI00;SW=0516;HW=7401", loaded "vaillant/bai.308523.inc" ([id_hw=7401]), "vaillant/08.bai.csv"
address 10: master #2
address 15: slave #2, scanned "MF=Vaillant;ID=40000;SW=0139;HW=7301", loaded "vaillant/15.400.csv"
address 31: master #8, ebusd
address 36: slave #8, ebusd

Problemy

Ponieważ rozwiązanie działało już przez kilka lat nastąpiło przepełnienie liczników (ebusd/bai/PrEnergyXXX) odpowiedzialnych za zliczanie zużycia gazu.

Poniżej komendy do zresetowania odpowiednich liczników:

#odczyt
ebusctl read -V -c bai PrEnergyCountHwc1

#zapis
ebusctl write -c bai PrEnergySumHc1 0
ebusctl write -c bai PrEnergySumHwc1 0
ebusctl write -c bai PrEnergyCountHc1 0
ebusctl write -c bai PrEnergyCountHwc1 0

Jeżeli przy zapisie są błędy „ERR: element not found” powyższe komendy należy wykonać w trybie instalatora (parametr „–accesslevel=install”).

Home Assistant

Karta ogrzewania w HA

Rozwiązanie bazuje na cyklicznym odczycie danych przez MQTT. Aby oczytać jakąś wartość należy najpierw wysłać wiadomość odpowiedni topic MQTT. Do testowania najlepiej użyć klienta umożliwiającego podłączenie się bezpośrednio do serwera MQTT, np. MQTT Explorer

Skrypty wymuszające pobieranie danych:

script:
  ebus_refresh_2m:
    alias: "Pobierz dane ebus"
    sequence:
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/400/RoomTemp/get'
          payload: ''   
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/bai/WaterPressure/get'
          payload: ''
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/bai/CirPump/get'
          payload: ''
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/400/IsInHoliday/get'
          payload: ''  
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/400/IsInParty/get'
          payload: ''
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/400/IsInSingleHwcLoadingMode/get'
          payload: ''           
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/400/ActualRoomTempDesired/get'
          payload: ''         
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/400/HwcTempDesired/get'
          payload: ''        
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/bai/PrEnergySumHwc1/get'
          payload: ''           
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/bai/PrEnergySumHc1/get'
          payload: ''           
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/bai/PrEnergyCountHwc1/get'
          payload: ''            
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/bai/PrEnergyCountHc1/get'
          payload: ''
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/bai/StorageTemp/get'
          payload: ''
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/400/OperatingMode/get'
          payload: ''
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/400/OperatingModeHwc/get'
          payload: ''
  ebus_refresh_30m:
    alias: "Pobierz dane ebus"
    sequence:
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/bai/HcHours/get'
          payload: ''
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/bai/HwcHours/get'
          payload: ''
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/bai/FlowSetPotmeter/get'
          payload: ''
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/bai/HwcSetPotmeter/get'
          payload: ''
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/400/HeatingCurve/get'
          payload: ''
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/bai/PrEnergySumHwc2/get'
          payload: ''           
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/bai/PrEnergySumHwc3/get'
          payload: ''           
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/bai/PrEnergySumHc2/get'
          payload: ''           
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/bai/PrEnergySumHc3/get'
          payload: ''
      - service: mqtt.publish
        data_template:
          topic: 'ebusd/400/ReducedNightTemp/get'
          payload: ''

i odpowiednie automatyzacje, dodatkowo automatyzacja powiadamiająca o zbyt niskim ciśnieniu w instalacji

automation:
  - alias: "Ebusd - update after start"
    trigger:
      platform: homeassistant
      event: start
    action:
    - delay: 00:01:00
    - service: script.ebus_refresh_2m 
    - service: script.ebus_refresh_30m    
      
  - id: 'update_ebusd_1'
    alias: Ebusd - update 5min
    trigger:
      platform: time_pattern
      minutes: '/2'
    condition:
    - condition: state
      entity_id: sensor.ebusd_running
      state: 'true'
    action:
      - service: script.ebus_refresh_2m
  - id: 'update_ebusd_2'
    alias: Ebusd - update 30min
    trigger:
      platform: time_pattern
      minutes: /30
    condition:
    - condition: state
      entity_id: sensor.ebusd_running
      state: 'true'
    action:
      - service: script.ebus_refresh_30m     
      
  - id: waterpressure_low_notification
    alias: "Ebusd - Waterpressure Low Notification"
    initial_state: 'on'
    
    trigger:
      platform: numeric_state
      entity_id: sensor.cisnienie_wody
      below: 0.75    
    action:
    - service: notify.gmail_notifier
      data:
        message: "Ciśnienie wody za niskie:  {{ states('sensor.cisnienie_wody') }}"
        title: "[HA] Ciśnienie wody"
    - service: persistent_notification.create
      data:
        title: "Ciśnienie wody"
        message: >
          Ciśnienie wody za niskie:  {{ states('sensor.cisnienie_wody') }}
        notification_id: "waterpressure_error"  

Poniżej ustawienia mqtt (ustawienie w pliku configuration.yaml oraz mqtt.yaml)

configuration.yaml

...
mqtt: !include mqtt.yaml
...

mqtt.yaml

sensor:
#########
# EBUSD #
#########
  - state_topic: "ebusd/global/running"
    name: "ebusd_running"
        
  - state_topic: "ebusd/global/signal"
    name: "ebusd_signal"
    
  - state_topic: "ebusd/global/uptime"
    name: "ebusd_uptime"
    
  - state_topic: "ebusd/global/version"
    name: "ebusd_version"


  - state_topic: "ebusd/bai/Status01"
    name: "ebus_FlowTemp"
    value_template: "{{ value_json['temp']['value'] }}"
    unit_of_measurement: '°C'
    device_class: temperature

  - state_topic: "ebusd/bai/Status01"
    name: "ebus_ReturnTemp"
    value_template: "{{ value_json['temp_1']['value'] | round(1)}}"
    unit_of_measurement: '°C'
    device_class: temperature

  - state_topic: "ebusd/bai/Status01"
    name: "Temperatura zewnętrzna"
    value_template: "{{ value_json['temp_2']['value'] | round(1)}}"
    unit_of_measurement: '°C'
    device_class: temperature

  - state_topic: "ebusd/bai/Status01"
    name: "Temperatura c.w."
    value_template: "{{ value_json['temp_4']['value'] }}"
    unit_of_measurement: '°C'
    device_class: temperature
    
  - state_topic: "ebusd/bai/Status01"
    name: "Płomień"
    value_template: "{{ value_json['pumpstate']['value'] }}"

##z automatyzacji
  - state_topic: "ebusd/400/RoomTemp"
    name: "Temperatura Jadalnia"
    value_template: "{{ ((value_json['temp']['value']|float)-1) | round(1)}}"
    unit_of_measurement: '°C'
    device_class: temperature
    
  - state_topic: "ebusd/400/ActualRoomTempDesired"
    name: "Temperatura zadana"
    value_template: "{{ value_json['value']['value'] | round(1)}}"
    unit_of_measurement: '°C'
    device_class: temperature
    
  - state_topic: "ebusd/bai/HcHours"
    name: "Liczba godzin pracy ogrzewania"
    value_template: "{{ value_json['value']['value'] }}"
    unit_of_measurement: 'h'

  - state_topic: "ebusd/bai/HwcHours"
    name: "Liczba godzin pracy c.w.u."
    value_template: "{{ value_json['value']['value'] }}"
    unit_of_measurement: 'h'

  - state_topic: "ebusd/bai/FlowSetPotmeter"
    name: "Ustawienie ogrzewania"
    value_template: "{{ value_json['value']['value'] | round(1)}}"
    unit_of_measurement: '°C'
    device_class: temperature

  - state_topic: "ebusd/bai/HwcSetPotmeter"
    name: "Ustawienie c.w.u"
    value_template: "{{ value_json['value']['value'] | round(1)}}"
    unit_of_measurement: '°C'
    device_class: temperature
    
  - state_topic: "ebusd/bai/WaterPressure"
    name: "Ciśnienie wody"
    value_template: "{{ value_json['press']['value'] }}"
    unit_of_measurement: 'Pa'
    device_class: pressure
    
  - state_topic: "ebusd/bai/CirPump"
    name: "Pompa cyrkulacyjna"
    value_template: "{{ value_json['value']['value'] }}"
    
  - state_topic: "ebusd/400/HeatingCurve"
    name: "Krzywa grzewcza"
    value_template: "{{ value_json['value']['value'] }}"
    
  - state_topic: "ebusd/400/IsInHoliday"
    name: "Tryb wakacyjny"
    value_template: "{{ value_json['value']['value'] }}"
    
  - state_topic: "ebusd/400/IsInParty"
    name: "Tryb impreza"
    value_template: "{{ value_json['value']['value'] }}"
    
  - state_topic: "ebusd/400/IsInSingleHwcLoadingMode"
    name: "Tryb ładowania zasobnika"
    value_template: "{{ value_json['value']['value'] }}"

  - state_topic: "ebusd/bai/Status02"
    name: "ebusd_hwcmode"
    value_template: "{{ value_json['hwcmode']['value'] }}"

  - state_topic: "ebusd/bai/Status02"
    name: "ebusd_st2_1"
    value_template: "{{ value_json['temp_1']['value'] }}"

  - state_topic: "ebusd/bai/Status02"
    name: "ebusd_st2_2"
    value_template: "{{ value_json['temp_2']['value'] }}"
    unit_of_measurement: '°C'
    device_class: temperature    

  - state_topic: "ebusd/bai/Status02"
    name: "ebusd_st2_3"
    value_template: "{{ value_json['temp_3']['value'] }}"    

  - state_topic: "ebusd/bai/Status02"
    name: "ebusd_st2_4"
    value_template: "{{ value_json['temp_4']['value'] }}"    
    unit_of_measurement: '°C'
    device_class: temperature    
    
  - state_topic: "ebusd/bai/PrEnergySumHwc1"
    name: "ebusd_PrEnergySumHwc1"
    value_template: "{{ value_json['value']['value'] }}"    
    unit_of_measurement: 'W'
    device_class: power
    
  - state_topic: "ebusd/bai/PrEnergySumHwc2"
    name: "ebusd_PrEnergySumHwc2"
    value_template: "{{ value_json['value']['value'] }}"    
    unit_of_measurement: 'W'
    device_class: power

  - state_topic: "ebusd/bai/PrEnergySumHwc3"
    name: "ebusd_PrEnergySumHwc3"
    value_template: "{{ value_json['value']['value'] }}"   
    unit_of_measurement: 'W'
    device_class: power

  - state_topic: "ebusd/bai/PrEnergySumHc1"
    name: "ebusd_PrEnergySumHc1"
    value_template: "{{ value_json['value']['value'] }}"   
    unit_of_measurement: 'W'
    device_class: power

  - state_topic: "ebusd/bai/PrEnergySumHc2"
    name: "ebusd_PrEnergySumHc2"
    value_template: "{{ value_json['value']['value'] }}"   
    unit_of_measurement: 'W'
    device_class: power

  - state_topic: "ebusd/bai/PrEnergySumHc3"
    name: "ebusd_PrEnergySumHc3"
    value_template: "{{ value_json['value']['value'] }}"   
    unit_of_measurement: 'W'
    device_class: power

  - state_topic: "ebusd/bai/PrEnergyCountHwc1"
    name: "ebusd_PrEnergyCountHwc1"
    value_template: "{{ value_json['value']['value'] }}"    
    unit_of_measurement: 'W'
    device_class: power

  - state_topic: "ebusd/400/OperatingModeHwc"
    name: "ebusd_OperatingModeHwc"
    value_template: "{{ value_json.value.value }}"

  - state_topic: "ebusd/400/OperatingMode"
    name: "ebusd_OperatingMode"
    value_template: "{{ value_json.value.value }}"

Konfiguracja dodatkowych obiektów w pliku mqtt.yaml

climate:
  - name: "Ogrzewanie"
    max_temp: 25
    min_temp: 15
    precision: 0.1
    temp_step: 0.5
    modes:
      - "heat"
      - "off"
    mode_state_template: >-
      {% set values = { 'auto':'auto', 'on':'heat',  'hwc':'cool', 'off':'off'} %}
      {% set state = value_json['pumpstate']['value'] %}
      {{ values[state] if state in values.keys() else 'off' }}
    mode_state_topic: "ebusd/bai/Status01"
    current_temperature_topic: "ebusd/400/RoomTemp"
    current_temperature_template: '{{value_json["temp"].value|float -1.25 }}'
    temperature_state_topic: "ebusd/400/ActualRoomTempDesired"
    temperature_state_template: '{{value_json.value.value}}'
  - name: "Ciepła woda"
    max_temp: 65
    min_temp: 40
    precision: 1
    temp_step: 1
    modes:
      - "heat"
      - "off"
    mode_state_template: >-
      {% set values = { 'hwc':'heat', 'off':'off'} %}
      {% set state = value_json['pumpstate']['value'] %}
      {{ values[state] if state in values.keys() else 'off' }}
      
    mode_state_topic:  "ebusd/bai/Status01"
    temperature_state_topic: "ebusd/400/HwcTempDesired"
    temperature_state_template: '{{value_json.value.value}}'
    temperature_command_topic: "ebusd/400/HwcTempDesired/set"
    current_temperature_topic: "ebusd/bai/StorageTemp"
    current_temperature_template: '{{value_json["temp"].value}}'

number:
  - name: mqtt_tryb_wakacyjny
    icon: mdi:caravan
    min: 0 
    max: 20
    step: 1
    mode: slider
    command_topic: ebusd/400/IsInHoliday/set
    state_topic: "ebusd/400/IsInHoliday"
    value_template: '{{value_json.value.value | int}}'
  - name: mqtt_krzywa_grzewcza
    icon: mdi:chart-bell-curve-cumulative
    min: 0.2
    max: 4
    step: 0.1
    mode: slider
    command_topic: ebusd/400/HeatingCurve/set
    state_topic: ebusd/400/HeatingCurve
    value_template: '{{value_json.value.value | float}}'

switch:
  - name: mqtt_tryb_impreza
    icon: mdi:glass-cocktail
    command_topic: "ebusd/400/IsInParty/set"
    state_topic: "ebusd/400/IsInParty"
    value_template: '{{value_json.value.value }}'
    payload_on: "on"
    payload_off: "off"
  - name: mqtt_tryb_ladowania_zasobnika
    icon: mdi:heat-pump
    command_topic: "ebusd/400/IsInSingleHwcLoadingMode/set"
    state_topic: "ebusd/400/IsInSingleHwcLoadingMode"
    value_template: '{{value_json.value.value }}'
    payload_on: "on"
    payload_off: "off"    

Zużycie gazu

Zużycie gazu można wyliczyć na podstawie liczników PrEnergySumHwc1 oraz PrEnergySumHw1. Na podstawie pomiarów należy wyliczyć stosunek zużycia gazu do sumy PrEnergySumHwc1 i PrEnergySumHw1.

Komponent do wprowadzenia poprzednich wartości odczytanych

type: entities
entities:
  - entity: input_number.gas_last_measure
  - entity: input_number.gas_prenergysumhc1
  - entity: input_number.gas_prenergysumhwc1
  - entity: input_number.wspolczynnik_gazu
  - entity: sensor.licznik_gazu
title: Zużycie gazu
show_header_toggle: false

Wyliczenie bieżącej wartości zużycia gazu (plik sensors.yaml)

      licznik_gazu:
        friendly_name: "Licznik gazu"
        unit_of_measurement: "m³"
        device_class: gas
        icon_template:
            mdi:gas-burner
        value_template: '{{ ((states.input_number.gas_last_measure.state | float) +
           ((states.sensor.ebusd_prenergysumhc1.state | int +  states.sensor.ebusd_prenergysumhwc1.state | int) -
           (states.input_number.gas_prenergysumhc1.state | int + states.input_number.gas_prenergysumhwc1.state | int)) /
           (states.input_number.wspolczynnik_gazu.state | float)
           ) |round(3) 
          }}

Linki

https://ebusd.eu

https://adapter.ebusd.eu/v2/index.en.html

https://github.com/john30/ebusd-configuration/issues/117