Problem with setting up modbus with a light template

Configuration
, ,
1

Hello,

I am struggling to get my dimmer lights to work with my Siemens Logo. I was able to make it work with my non dimmable lights but here…

  - platform: template
    lights:
      living_room:
        friendly_name: "Living Room"
        level_template: "{{ states('sensor.sensorlivingroom') / 10 }}"
        value_template: "{{ states('sensor.sensorlivingroom') | int > 0 }}"
        turn_on:
          - service: modbus.write_register
            data:
              hub: hub1
              unit: 1
              address: 50
              value: 50
        turn_off:
          - service: modbus.write_register
            data:
              hub: hub1
              unit: 1
              address: 50
              value: 0
        set_level:
          - service: modbus.write_register
            data:
              hub: hub1
              unit: 1
              address: 50
              value: "{{ brigthness | int }}"

What are my issues:

  • I can’t see the state of my lights level and value

  • Turning off and turning on doesn’t work

If in run the service in the developer tools it works fine:

image
image1005×621 27.8 KB

value_template works fine in developer tools events.

I’ve been at it for hours so am grateful for any piece of advice.
thanks,

2

Your level template needs to convert to an int/float before doing math. You’ll also need to convert it to a value between 0-255. If your light reports state from 0-100, do some math to make it that range. I assume that’s what the /10 is supposed to be doing though…

level_template: "{{ states('sensor.sensorlivingroom') | int / 10 }}"

You also misspelled brightness here.

        set_level:
          - service: modbus.write_register
            data:
              hub: hub1
              unit: 1
              address: 50
              value: "{{ brigthness | int }}"
3

Thanks I didn’t know about the 0 - 255.

level_template: "{{ states('sensor.sensordiningroomlight') | int * 255 / 1000 }}"

I changed it to reflect the full range 0 - 255 and also corrected my english but this doesn’t solve the problem,

4

Is the only difference between your dimmable and non dimmable the level_template and set_level?

Your set_level will also have to convert the value back from 0-255 to whatever scale your things needs.

I’m not sure what your things need, in your example, you sent a value of 500 and said that worked, but in your yaml, you’re sending a value of 50.

Either way, set_level will have to do the conversion. And you have to use a data_template because you’re using a template value.

    set_level:
      - service: modbus.write_register
        data_template:
          hub: hub1
          unit: 1
          address: 50
          # Converts 0-255 to 0-100. 
          value: "{{ (brightness | float / 255.0) * 100 | round(0) }}"
5

yes those are the only difference and the fact that I don’t have to do any math from the state as it’s a binary sensor :

value_template: "{{ states('binary_sensor.BinarySensorAttic') }}"

My PLC can receive any value and anything above 100 it will round it down. But the range yes is from to 100 and i receive a value from 0 - 1000 back

What troubles me most is that the value_template doesn’t work as it seems straightforward in my code.

Now i do see that I get the following error:

2020-03-21 22:53:46 ERROR (MainThread) [homeassistant.core] Error doing job: Task exception was never retrieved
Traceback (most recent call last):
  File "/srv/homeassistant/lib/python3.7/site-packages/homeassistant/helpers/entity.py", line 576, in async_request_call
    await coro
  File "/srv/homeassistant/lib/python3.7/site-packages/homeassistant/components/template/light.py", line 254, in async_turn_on
    {"brightness": kwargs[ATTR_BRIGHTNESS]}, context=self._context
  File "/srv/homeassistant/lib/python3.7/site-packages/homeassistant/helpers/script.py", line 189, in async_run
    await self._handle_action(action, variables, context)
  File "/srv/homeassistant/lib/python3.7/site-packages/homeassistant/helpers/script.py", line 272, in _handle_action
    await self._actions[_determine_action(action)](action, variables, context)
  File "/srv/homeassistant/lib/python3.7/site-packages/homeassistant/helpers/script.py", line 354, in _async_call_service
    context=context,
  File "/srv/homeassistant/lib/python3.7/site-packages/homeassistant/helpers/service.py", line 96, in async_call_from_config
    domain, service_name, service_data, blocking=blocking, context=context
  File "/srv/homeassistant/lib/python3.7/site-packages/homeassistant/core.py", line 1204, in async_call
    processed_data = handler.schema(service_data)
  File "/srv/homeassistant/lib/python3.7/site-packages/voluptuous/schema_builder.py", line 272, in __call__
    return self._compiled([], data)
  File "/srv/homeassistant/lib/python3.7/site-packages/voluptuous/schema_builder.py", line 594, in validate_dict
    return base_validate(path, iteritems(data), out)
  File "/srv/homeassistant/lib/python3.7/site-packages/voluptuous/schema_builder.py", line 432, in validate_mapping
    raise er.MultipleInvalid(errors)
voluptuous.error.MultipleInvalid: expected int @ data['value'][0]
6

Whoops, need parenthesis. In my version, I’m rounding 100.0 to 100…then the entire thing is a giant float.

value: "{{ ((brightness | float / 255.0) * 100) | int }}"

7

I am still getting the same message. This only happens when i change the value of course.

In the meanwhile been testing a whole lot of different things but nothing seem to change the outcome :frowning:

8

Just checking, you made it a data_template vs data?

9

Thanks Jim this is probably the best question! I was able to make it work by adding data_template for the brightness. With my switches I don’t need data_templates.

Here is my working code!

  - platform: template
    lights:
      living_room:
        friendly_name: "Living Room"
        level_template: "{{ (states('sensor.sensorlivingroom') | int * 255 / 1000) | round(0) }}"
        value_template: "{{ states('sensor.sensorlivingroom') | int > 0 }}"
        turn_on:
          - service: modbus.write_register
            data:
              hub: hub1
              unit: 1
              address: 50
              value: 50
        turn_off:
          - service: modbus.write_register
            data:
              hub: hub1
              unit: 1
              address: 50
              value: 0
        set_level:
          - service: modbus.write_register
            data:
              hub: hub1
              unit: 1
              address: 50
            data_template:
              value: "{{ ((brightness | float / 255) * 100)  | int }}"