Need Help - ESPHome Modbus - Ventilation

ESPHome
1

Hello Everyone.

I really need some help.
I have created a modbus communicator with a Wemos D1 mini (ESP8266) and it works fine with my Modbus Meter From Schneider Electric, BUT when i connect it to my Modbus Gateway for my Swegon Ventialtion system i can’t get a response. I have tried to connect the modbus gateway to modbus poll and here i can communicate with the unit without any trouble.

so what do i do wrong ?

First of all here is the connection settings for the Modbus Poll:

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and here is my UART connection:

uart:
  id: mod_bus
  tx_pin: D3
  rx_pin: D2
  baud_rate: 9600
  stop_bits: 1
  data_bits: 8
  parity: none

modbus:
  flow_control_pin: 0
  id: modbus1

modbus_controller:
  - id: test
    ## the Modbus device addr
    address: 0x1
    modbus_id: modbus1
    setup_priority: -10

Here is the datasheet for the modbus adresses:

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and here is my created controllers:

sensor:
  - platform: modbus_controller
    modbus_controller_id: test
    name: "Temperature"
    id: temperature
    register_type: read
    address: 0332
    # register_count: 1
    unit_of_measurement: "C"
    value_type: U_WORD

select:
  - platform: modbus_controller
    name: "Operation Mode"
    address: 4099
    value_type: U_WORD
    # register_count: 1
    optionsmap:
      "Zero": 0
      "One": 1
      "Two": 2

Can anyone please help me, im stuck!

/Mike

2

i found the solution:

but still cant get values from the reading register, but can control it now.

uart:
  id: mod_bus
  tx_pin: D3
  rx_pin: D2
  baud_rate: 38400
  stop_bits: 1
  data_bits: 8
  parity: none

modbus:
  flow_control_pin: D0
  id: modbus1

modbus_controller:
  - id: test
    ## the Modbus device addr
    address: 0x1
    modbus_id: modbus1
    setup_priority: -10
    update_interval: 5sec

select:
  - platform: modbus_controller
    name: "Operation Mode"
    address: 4099
    value_type: U_WORD
    register_count: 2
    optionsmap:
      "Ude": 0
      "Hjemme": 1
      "Boost": 2

  - platform: modbus_controller
    name: "Fan Speed"
    address: 8001
    value_type: U_WORD
    # register_count: 2
    optionsmap:
      "Meget lavt": 1
      "Lavt": 2
      "Normal": 3
      "Høj": 4
      "Meget højt": 5

sensor:
  - platform: modbus_controller
    name: "Unit State"
    id: unit_state
    register_type: holding
    address: 7999
    value_type: U_WORD
    register_count: 2

  # - platform: modbus_controller
  #   name: "Filter Guard"
  #   id: filter_guard
  #   register_type: read
  #   address: 0351
  #   value_type: S_WORD
  #   # register_count: 2