MQTT sensor - syntax(?) issue - help need for sending values to wallbox

Configuration
1

Hello to All,

I (old man started with Home Assistant and learning slowly) try to implement MQTT sensors for monitoring (and control) my OpenWB Pro wallbox.

While reading through this community I figured out a lot of useful ways of implementation. But now I am stuck with following topic:

I would like to SET (means send) a value to the wallbox. Reading FROM the wallbox is working well, I can get all values I need. But writing a value is still like a riddle for me. Please see below mentioned code sniped from my CONFIGURATION.YAML:

> mqtt:
>   sensor:
>     # ------- mqtt onpenWB Collection ------- 
>     # Get SoC from Renault Zoe
>     - state_topic: "openWB/vehicle/1/get/soc"
>       name: "OpenWB SoC read"
>       value_template: "{{ value | float(0) | round(0) }}"
>       device_class: battery
>     # Get Chargemode
>     - state_topic: "openWB/vehicle/template/charge_template/1"
>       name: "OpenWB Chargemode read"
>       value_template: "{{ value_json.chargemode.selected | replace('pv_charging', 'PV-Laden') | replace('instant_charging', 'Sofortladen') | replace('stop', 'Stop') }}"
>     # Set Chargemode
>     - command_topic: "openWB/set/vehicle/template/charge_template/1"
>       name: "OpenWB Chargemode write"
>       value_template: "{{ value_json.chargemode.selected }}"
>       payload: "4"

The first two topics are working fine (just pull values from the wallbox). But the last topic (set a topic in the wallbox with a defined value) is giving me Errors while re-loading the YAML-file. So, it seems like a syntax error - but I do not have a clue.

Can some friendly soul give me please a hint or advice what to do?

Thanks in advance
HAMausepaul

2

Update:

Currently I am getting a (not in the way I wanted) topic set in my wallbox. See code below:

mqtt:
  sensor:
    # ------- mqtt onpenWB Collection ------- 
    # Get SoC from Renault Zoe
    - state_topic: "openWB/vehicle/1/get/soc"
      name: "OpenWB SoC read"
      value_template: "{{ value | float(0) | round(0) }}"
      device_class: battery
    # Get Chargemode
    - state_topic: "openWB/vehicle/template/charge_template/1"
      name: "OpenWB Chargemode read"
      value_template: "{{ value_json.chargemode.selected | replace('pv_charging', 'PV-Laden') | replace('instant_charging', 'Sofortladen') | replace('stop', 'Stop') }}"
  switch:
    # Set Chargemode
    - command_topic: "openWB/set/vehicle/template/charge_template/1"
      state_topic: "openWB/vehicle/template/charge_template/1"
      name: "OpenWB Chargemode write"
      value_template: "{{ value_json.chargemode.selected | 'pv_charging' }}"
      payload_on: "pv_charging"

But the problem is that I am not “hitting” the right target value. Instead I am “creating” new topiv/value in my wallbox.

Does anybody has a clue about the right way of doing it?

For reference here is a screenshot of the topic I am talking about in MQTT Explorer:

image
image1276×809 52.3 KB

Thanks for your help
HAMausepaul

3

Update 2 (for those who are insterested):

I created a mqtt.yaml file with following code - and it works. So I can use this as a start for implementing more needed functionality:

sensor:

# ------- mqtt onpenWB Collection ------- 

  # Get SoC from Renault Zoe
  - name: "OpenWB SoC read"
    state_topic: "openWB/vehicle/1/get/soc"
    value_template: "{{ value | float(0) | round(0) }}"
    device_class: battery
  # Get Chargemode
  - name: "OpenWB Chargemode read"
    state_topic: "openWB/vehicle/template/charge_template/3"
    value_template: "{{ value_json.chargemode.selected | replace('pv_charging', 'PV-Laden') | replace('instant_charging', 'Sofortladen') | replace('stop', 'Stop') }}"

switch:

  # Set Chargemode STOP
  - name: "OpenWB Chargemode write stop"
    command_topic: "openWB/set/vehicle/template/charge_template/3/chargemode/selected"
    payload_on: "stop"
    payload_off: "stop"
  # Set Chargemode PV-LADEN
  - name: "OpenWB Chargemode write pv_charging"
    command_topic: "openWB/set/vehicle/template/charge_template/3/chargemode/selected"
    payload_on: "pv_charging"
    payload_off: "pv_charging"
  # Set Chargemode SOFORTLADEN
  - name: "OpenWB Chargemode write instant_charging"
    command_topic: "openWB/set/vehicle/template/charge_template/3/chargemode/selected"
    payload_on: "instant_charging"
    payload_off: "instant_charging"

In case of any questions I am happy to help.

Cheers
HAMausepaul