Access to "Solar Sell" in Deye inverter

[Ralle]

Hello,

I have the 12 kw Deye Hybrid inverter with SolarMan datalogger. I want to be able to set the "Solar Sell" value from HA automations. I already installed the Nordpool add-on so I can watch for energy prices and then I want to toggle "Solar Sell" accordingly.

I have searched the issues and found people talking about Modbus and the datalogger and I am not sure what I actually need to accomplish this. Many things feel a little bit implied from the conversations I've seen. I cannot understand it at least.

I have this project installed in HACS and can see values from my inverter. Works perfect. What's next?

[RPJacobs]

Hello,

To achieve what you want, you can add a shell command to your YAML configuration and create a switch to toggle the "Solar Sell" mode. Here's how you can do it:

First, add these shell commands to your YAML file:

shell_command:
  sell_on: 'python /config/python_scripts/test.py on'
  sell_off: 'python /config/python_scripts/test.py off'

Then, add a switch configuration:

switch:
  - platform: template
    switches:
      sell:
        unique_id: "switch.sell"
        turn_on:
          service: shell_command.sell_on
        turn_off:
          service: shell_command.sell_off

Next, use the following Python script in the /config/python_scripts/test.py file:

from pysolarmanv5 import PySolarmanV5
import sys

mode = 2
if len(sys.argv) > 1 and sys.argv[1] == 'on':
    mode = 0

modbus = PySolarmanV5('x.x.x.x', sernum, port=8899, mb_slave_id=1, verbose=0)

modbus.write_multiple_holding_registers(register_addr=142, values=[mode])

Replace x.x.x.x with the IP address of your inverter and sernum with the serial number.

more information on the modbus interface check https://github.com/RPJacobs/Kiwatt

Hope this helps!

[Ralle]

Thank you so much for this thorough description.

Can you elaborate on what “my yaml file” is? When setting up this project you have the option to do manual configuration. I didn’t do this. Is it a requirement? Otherwise I don’t have a yaml file do I?

[RPJacobs]

https://www.home-assistant.io/docs/configuration/

[Ralle]

Hey @RPJacobs thank you so much for getting me started on this.

Alright. So I got the test.py running. But this is what I get:

python test.py on System Work Mode = Selling Frist (yes it has a typo in SolarMan web app)

python.test.py off System Work Mode = Zero Export to CT Solar Sell = Enable

Unless I miss my guess. I am using the wrong register here. OR I don't understand the settings of my inverter.

EDIT: Apparently register 145 means solar sell and values 0 and 1 disable and enable it.

Thanks for all your help :)

[RPJacobs]

Well done.