global mpp scan manual (holding register 30230) - code for an automation/switch?

[tttooommmeeekkk]

Sometimes my SH10RT does not initialize one of my two pv-strings in the morning. So I would like to solve it with an one-time manual global scan via HA.
For this reason I need a switch to set the "manual scanning" of the inverter to 170 (enable). I tried some coding but without success.
Can someone please help me or does some code already exist (link)?

Here is where I found the hint to the existing register:
https://www.photovoltaikforum.com/thread/166134-daten-lesen-vom-sungrow-wechselrichtern-modbus/?postID=2849029#post2849029

[tttooommmeeekkk]

I solved it by my own and edited my local modbus_sungrow.yaml (comparing to the coding for other undocumented registers in this yaml-file). Here is my coding if someone has the same requirement.

Code section "Sensors":

      - name: Global mpp scan manual raw
        unique_id: sg_global_mpp_scan_manual_raw
        device_address: !secret sungrow_modbus_slave
        address: 30229 # reg 30230
        input_type: holding
        data_type: uint16
        precision: 0
        state_class: measurement
        scan_interval: 10

Code section "Input Select":

  set_sg_global_mpp_scan_manual:
    name: Global mpp scan manual
    options:
      - "Enabled"
      - "Disabled"
    icon: mdi:export

Code section "Automation":

  - id: "automation_sungrow_inverter_global_mpp_scan_manual_update"
    alias: "sungrow inverter global mpp scan manual update"
    description: "Updates Enable/Disable for global mpp scan manual"
    trigger:
      - platform: state
        entity_id:
          - sensor.global_mpp_scan_manual_raw
    condition:
      - condition: template
        value_template: "{{ not is_state('sensor.global_mpp_scan_manual_raw', 'unavailable') }}"
    action:
      - service: input_select.select_option
        target:
          entity_id: input_select.set_sg_global_mpp_scan_manual
        data:
          option: >
            {% if ((states('sensor.global_mpp_scan_manual_raw') | int(default=0)) == 0x00AA) %} 
              Enabled
            {% elif ((states('sensor.global_mpp_scan_manual_raw') | int(default=0)) == 0x0055) %} 
              Disabled
            {% endif %}
    mode: single

  - id: "automation_sungrow_global_mpp_scan_manual"
    alias: "sungrow inverter global mpp scan manual"
    description: "Set global mpp scan manual"
    trigger:
      - platform: state
        entity_id:
          - input_select.set_sg_global_mpp_scan_manual
    condition: []
    variables:
      export_limit_enable: 0xAA
      export_limit_disable: 0x55
    action:
      - service: modbus.write_register
        data_template:
          hub: SungrowSHx
          slave: !secret sungrow_modbus_slave
          address: 30229 # reg 30230
          value: >
            {% if is_state('input_select.set_sg_global_mpp_scan_manual', "Enabled") %} 
              {{export_limit_enable}}
            {% elif is_state('input_select.set_sg_global_mpp_scan_manual', "Disabled") %}
              {{export_limit_disable}}
            {% else %}
              {{export_limit_disable}}
            {% endif %}
    mode: single

The inverter deactivates (disables) the switch by its own (after 1 second) so it is more a pushbutton-function.
For this I wrote an additional automation within the HA-GUI (that resets the input to "disabled" after 20 seconds).

YAML-Code HA-GUI Automation:

alias: Tommi - Global MPP-Scan zurückstellen
description: >-
  Stellt den Global-MPP-Scan im HA automatisiert nach 20 Sekunden von "Enabled"
  auf "Disabled" zurück (der Inverter macht dies als Art Taster automatisiert
  nach 1 Sek).
trigger:
  - platform: state
    entity_id:
      - input_select.set_sg_global_mpp_scan_manual
    to: Enabled
    for:
      hours: 0
      minutes: 0
      seconds: 20
condition: []
action:
  - service: input_select.select_option
    data:
      option: Disabled
    target:
      entity_id: input_select.set_sg_global_mpp_scan_manual
mode: single

If someone knows a way how to solve it more simple or sees any problems with this coding... please comment!
(I am a total rookie in coding - no programmer - only a copy-paste-logic)

[mkaiser]

hey,

looks very good!

Can you make a Pullrequest, so I can merge it in the latest version?

one minor thing: Can you translate your comments to english?

BR :)
Martin

[tttooommmeeekkk]

Hey Martin,

I am not really familar with this formalities on github because I changed it on my local modbus_sungrwo.yaml file version dated 2023-11-12 (2).
I tried to create a pullrequest (with my older individual version):
#263

The reset automation is actually not part of the pullrequest because I created this via the home assistant user interface, so it is only part of mine HA automations.yaml

Nevertheless I tried a translation into English:

  alias: global mpp scan reset
  description: resets the global manual mpp scan back to "disabled" after 20 seconds in HA (the inverter inbuild function  resets the "enabled" automatically to "disabled" within 1 second). This automation only reproduces in HA what the inverter does by its own.
  trigger:
  - platform: state
    entity_id:
    - input_select.set_sg_global_mpp_scan_manual
    to: Enabled
    for:
      hours: 0
      minutes: 0
      seconds: 20
  condition: []
  action:
  - service: input_select.select_option
    data:
      option: Disabled
    target:
      entity_id: input_select.set_sg_global_mpp_scan_manual
  mode: single

Best regards
Tommi :o)

[mmierke]

I have created a new version #270 based on the actual version of the yaml to keep things rolling.