Modbus binary_sensor custom on/off values

[nerdoc (Christian González)]

I am using the modbus component for getting values from my heatpump. This works, but makes getting values like the heatRequest not easy to fetch: on the ModBus the value for “on” is 8, and for Off is 5 - which is weird, but it is like it is.

I did the conversion to a binary by using a custom template binary sensor:

binary_sensor:
  - platform: template
    sensors:
      heatcircuit0_heatrequest:
        value_template: >
          {% if states('sensor.heatcircuit0_heatrequest_raw') == '5' %}
            false
          {% elif states('sensor.heatcircuit0_heatrequest_raw') == '8' %}
            true
          {% else %}
            false
          {% endif %}

This is already described e.g. here:

How to get on/off based on a sensor value

Hi All, I’m trying to get a binary_sensor to report either ‘on’ or ‘off’ based on the value of another sensor. I would like to binary_sensor to report ‘off’ if the other sensor value is below 5 and ‘on’ if it is above 5. So far my attempt below has not worked… Any tips? binary_sensor: - platform: template sensors: onyko_amp_power: friendly_name: "Onyko Amp Power" value_template: "{{ 'off' if states('sensor.washing_machine_power_power_2') | float < 5 else 'on' }}" …

But it could be made easier if the modbus binary_sensors component would add config values like

binary_sensors:
  - name: my_sensor
    address: 24
    value_true: 8   # or value_on
    value_false: 5  # or value_off