Dimplex HeatPump LS 8 AS + NWPM Integration using MODBUS TCP

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1

Hi There,

another project to share :slight_smile:

obrázok

I have managed to use NWPM module (https://dimplex.atlassian.net/wiki/spaces/DW/pages/2862383109/NWPM#Beschreibung-und-Download-PlugIn) with WPM 2006 Plus controller to control my Dimplex LS 8 AS Heat Pump throught MODBUS protocol.

You have to configure your NWPM plugin module to use ModBus TCP:

  1. login to pcoWEB → preferences → network → firmware → opens new dialog window
  2. switch to ModBus TCP tab at new opened window and enable: ModBus TCP Status → Enable, ModBus TCP Port → 502 (I have used 1.5.x Map mode)
  3. Submit

Create modbus.yaml:

- name: dimplex
  type: tcp
  host: 192.168.1.xx ##Your NWPM module IP address here
  port: 502
  delay: 5
  timeout: 5
  sensors: ## Ordered by modbus address
    - name: Dimplex Mode
      slave: 1
      address: 5007
      scan_interval: 5
      input_type: input
    - name: Dimplex Smart Grid
      slave: 1
      address: 5167
      scan_interval: 5
      input_type: input
    - name: Dimplex Parallel Displacement
      slave: 1
      address: 5002
      scan_interval: 5
      input_type: input

modify configuration.yaml to include modbus.yaml and create Heating mode selection list:

modbus: !include modbus.yaml

input_select:
  heatpump_mode:
    name: Heatpump Mode
    options:
      - "Summer"
      - "Auto"
      - "Holiday"
      - "Party"
      - "Heat gen 2"
    icon: mdi:home-thermometer

Modify your automations.yaml to simplify Dimplex Modbus registry settings for heating modes:

- id: '1713981187327'
  alias: set_heatpump_mode
  description: Nastav mod TC Dimplex
  trigger:
  - platform: state
    entity_id:
    - input_select.heatpump_mode
  condition: []
  action:
  - service: modbus.write_register
    data:
      address: 5007
      hub: dimplex
      slave: 1
      value: '{{ state_attr(trigger.entity_id,''options'').index(states(trigger.entity_id))
        }}'

- id: '1714546261857'
  alias: act_heatpump_mode
  description: refresh heatpump mode input_select
  trigger:
  - platform: state
    entity_id:
    - sensor.dimplex_mode
  condition: []
  action:
  - service: input_select.select_option
    data:
      entity_id: input_select.heatpump_mode
      option: '{{ state_attr(''input_select.heatpump_mode'',''options'') [states(trigger.entity_id) | int] }}'
  mode: single

To reach other setings / registers, just follow this dimplex wiki guide:
https://dimplex.atlassian.net/wiki/spaces/DW/pages/3021504513/Modbus+TCP+Anbindung

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2

Does anybody know how to use Dimplex Smart Grid settings to integrate with FVE production and avoid consuption of electricity when not producing green power? :slight_smile:
Any hint would be appreciated, thanks.

3

hi @jmnemonicj ,

followed all your instructions. but I am missing how I can add the pump to a dashboard or do something else.
do I miss something here?

4

@jmnemonicj I try to do this via EPEX plugin. when prices are negative I think green power is overwhelming.

5

What do you mean to add pump to dashboard?

You have to add the items you’ve already created, forex. the following as stated at my example before:

input_select.heatpump_mode

or one of the modbus items you created:

Dimplex Smart Grid

Dimplex Parallel Displacement

like these ones:

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and my actual modbus.yaml:


name: dimplex
  type: tcp
  host: 192.168.1.xx # type your nwpm module local ip address
  port: 502
  delay: 0
  timeout: 5
  sensors: ## Ordered by modbus address
    - name: Dimplex Mode
#      slave: 1
      address: 5007
      scan_interval: 10
      input_type: input
    - name: Dimplex Smart Grid
#      slave: 1
      address: 5167
      scan_interval: 10
      input_type: input
    - name: Dimplex Parallel Displacement
#      slave: 1
      address: 5002
      scan_interval: 10
      input_type: input
    - name: Dimplex Hot Water target Temp
#      slave: 1
      address: 5022
      scan_interval: 10
      input_type: input
    - name: Dimplex Max temperature
#      slave: 1
      address: 5088
      scan_interval: 10
      input_type: input
    - name: Dimplex temperature hot water
#      slave: 1
      address: 30
      scan_interval: 10
      input_type: input
      unit_of_measurement: C
      unique_id: Dimplex_hot_water_temp
      scale: .1
      precision: 1
    - name: Dimplex temperature hot water target
#      slave: 1
      address: 40
      scan_interval: 10
      input_type: input
      unit_of_measurement: C
      unique_id: Dimplex_hot_water_target_temp
      scale: .1
      precision: 1
6

I meant how to control the pump to start the heating “right now”.
I haven’t found Modbus register to modify for the purpose.

1 Like
8

Does this instruction work for WPM 2004 Plus controller too??

9

It should, if you have modbus connection ready (forex. NWMP card + configuration as stated before). You just may need to update modbus addresses in modbus.ymal script, if diiffers from wpm2006 (check your WPM2004 guide).