HomeAssistant Modbus configuration for Pichler LG350 Ventilation Units (possible for LG450 too)

lg350.yml

modbus:
  - name: pichlerlg350
    type: tcp
    host: 192.168.44.232
    port: 502
    delay: 2
    message_wait_milliseconds: 30
    binary_sensors:
      - name: "lg350_bypassklappe" # 0.0
        unique_id: "lg350_bypassklappe"
        slave: 20
        address: 20
        input_type: input
        device_class: opening
    switches:
      - name: "lg350_betriebsmodus_sommer"
        slave: 20
        address: 1
        write_type: holding
        command_on: 1 # Sommer
        command_off: 2 # Winter
        verify:
          delay: 1
      - name: "lg350_bypassklappe_force_open"
        slave: 20
        address: 49
        write_type: holding
        # data_type: uint16
        command_on: 2 # Ein/Offen
        command_off: 0 # Normal.  "1" waere Aus/Geschlossen
        verify:
          delay: 1
    sensors:
      - name: "lg350_temp_aussenluft" # 0.0
        unique_id: "lg350_temp_aussenluft"
        unit_of_measurement: "°C"
        slave: 20
        address: 30
        input_type: input
        data_type: int16
        offset: -100
        precision: 1
        scale: 0.1
      - name: "lg350_temp_fortluft" # 3.0
        unique_id: "lg350_temp_fortluft"
        unit_of_measurement: "°C"
        slave: 20
        address: 31 # 30
        input_type: input
        data_type: int16
        offset: -100
        precision: 1
        scale: 0.1
      - name: "lg350_temp_abluft" # 0.2
        unique_id: "lg350_temp_abluft"
        unit_of_measurement: "°C"
        slave: 20
        address: 32 # 31
        input_type: input
        data_type: int16
        offset: -100
        precision: 1
        scale: 0.1
      - name: "lg350_temp_zuluft" # xxx
        unique_id: "lg350_temp_zuluft"
        unit_of_measurement: "°C"
        slave: 20
        address: 33 # 32
        input_type: input
        data_type: int16
        offset: -100
        precision: 1
        scale: 0.1
      - name: "lg350_temp_aussenluft_vhr"
        unique_id: "lg350_temp_aussenluft_vhr"
        unit_of_measurement: "°C"
        slave: 20
        address: 34
        input_type: input
        data_type: int16
        offset: -100
        precision: 1
        scale: 0.1
      - name: "lg350_zuluftdrehzahl"
        unique_id: "lg350_zuluftdrehzahl"
        unit_of_measurement: "rpm"
        slave: 20
        address: 39
        input_type: input
        data_type: int16
      - name: "lg350_abluftdrehzahl"
        unique_id: "lg350_abluftdrehzahl"
        unit_of_measurement: "rpm"
        slave: 20
        address: 40
        input_type: input
        data_type: int16
      - name: "lg350_zuluftstrom"
        unique_id: "lg350_zuluftstrom"
        unit_of_measurement: "m3/h"
        slave: 20
        address: 46
        input_type: input
        data_type: int16
      - name: "lg350_abluftstrom"
        unique_id: "lg350_abluftstrom"
        unit_of_measurement: "m3/h"
        slave: 20
        address: 47
        input_type: input
        data_type: int16
      - name: "lg350_reststandzeit_filter"
        unique_id: "lg350_reststandzeit_filter"
        unit_of_measurement: "h"
        slave: 20
        address: 50
        input_type: input
        data_type: uint16
      - name: "lg350_betriebsmodus_sw"
        unique_id: "lg350_betriebsmodus_sw"
        slave: 20
        address: 1
        input_type: holding
        data_type: uint16
      - name: "lg350_lufstrom_stufe1"
        unique_id: "lg350_luftstrom_stufe1"
        unit_of_measurement: "m3/h"
        slave: 20
        address: 9
        input_type: holding
        data_type: int16
      - name: "lg350_lufstrom_stufe2"
        unique_id: "lg350_luftstrom_stufe2"
        unit_of_measurement: "m3/h"
        slave: 20
        address: 10
        input_type: holding
        data_type: int16
      - name: "lg350_lufstrom_stufe3"
        unique_id: "lg350_luftstrom_stufe3"
        unit_of_measurement: "m3/h"
        slave: 20
        address: 11
        input_type: holding
        data_type: int16
      - name: "lg350_luftstufe"
        unique_id: "lg350_luftstufe"
        slave: 20
        address: 2
        input_type: holding
        data_type: int16
      - name: "lg350_bypassklappe_set"
        unique_id: "lg350_bypassklappe_set"
        slave: 20
        address: 49
        input_type: holding
        data_type: int16
      - name: "lg350_abluftdifferenz_stufe1"
        unique_id: "lg350_abluftdifferenz_stufe1"
        unit_of_measurement: "m3/h"
        slave: 20
        address: 83
        input_type: holding
        data_type: int16
        offset: -500
      - name: "lg350_abluftdifferenz_stufe2"
        unique_id: "lg350_abluftdifferenz_stufe2"
        unit_of_measurement: "m3/h"
        slave: 20
        address: 84
        input_type: holding
        data_type: int16
        offset: -500
      - name: "lg350_abluftdifferenz_stufe3"
        unique_id: "lg350_abluftdifferenz_stufe3"
        unit_of_measurement: "m3/h"
        slave: 20
        address: 85
        input_type: holding
        data_type: int16
        offset: -500

sensor:
  - platform: template
    sensors:
      lg350_luftstufe_render:
        friendly_name: "Luftstufe"
        value_template: >-
          {% set lg350_luftstufe_mapper =  {
          0: 'Standby',
          1: 'Stufe 1',
          2: 'Stufe 2',
          3: 'Stufe 3',
          4: 'Grundlüftung'} %}
          {% set state =  states('sensor.lg350_luftstufe')|int %}
          {{ lg350_luftstufe_mapper[state] if state in lg350_luftstufe_mapper else 'Unknown' }}
      lg350_bypassklappe_set_render:
        friendly_name: "Bypass Klappe Stellung"
        value_template: >-
          {% set lg350_bypassklappe_set_mapper = {
          0: 'Normal',
          1: 'Aus/Geschlossen',
          2: 'Ein/Offen'} %}
          {% set state = states('sensor.lg350_bypassklappe_set')|int %}
          {{ lg350_bypassklappe_set_mapper[state] if state in lg350_bypassklappe_set_mapper else 'Unknown' }}
      lg350_betriebsmodus_sw_render:
        friendly_name: "Betriebsmodus"
        value_template: >-
          {% set lg350_betriebsmodus_sw_mapper = {
          1: 'Sommer',
          2: 'Winter'} %}
          {% set state = states('sensor.lg350_betriebsmodus_sw')|int %}
          {{ lg350_betriebsmodus_sw_mapper[state] if state in lg350_betriebsmodus_sw_mapper else 'Unknown' }}

template:
  - sensor:
      - name: "LG350 Heizleistung"
        unique_id: "lg350_heizleistung"
        state_class: "measurement"
        unit_of_measurement: "W"
        device_class: power
        state: >
          {% set vorlauf = states('sensor.lg350_temp_zuluft') | float (0) %}
          {% set ruecklauf = states('sensor.lg350_temp_abluft') | float %}
          {% set durchfluss = states('sensor.lg350_zuluftstrom') | float %}
          {{ ((vorlauf - ruecklauf) * durchfluss * 0.33  ) | round(1, default=0) }}

Thank you! As mentioned in the forum, I've received some (incomplete) documentation from Pichler for the LG 150 and updated my config here: https://gist.github.com/sventiffe/788b25ff50a8b3cc2c3a33cac5576616

I've defined an input number and action like suggested:

alias: 'lg150: luftmenge stufe 1 änderung'
description: ''
triggers:
  - entity_id:
      - input_number.lg150_base_luftmenge
    from: null
    to: null
    trigger: state
conditions: []
actions:
  - data_template:
      hub: pichler_lg150
      address: 9
      slave: 20
      value: '{{ states(''input_number.lg150_base_luftmenge'') | int / 10 }}'
    action: modbus.write_register
mode: single

In contrast, apparently, to the bigger devices, the LG150 operates with 1/10th of the actual settings. I've also defined helper methods to render the air volume nicely, multiplying the modbus data by 10

Hello guys,
excuse me if it is a dumb question, First time doing something with Modbus RTU-> TCP and not too long in HA

Has anyone an idea why i can´t set any settings at the ventilation unit?
I have the same device Elfin EE11A as [mihu-ov].

Can´t seem to find the right setting for this

`

Elfin seems to communicate with the HA instance

HA:

Sensor readings work

Thanks