problem installing SolarEdge ModbusTCP plugin

[BartSr]

Hi
Still struggeling with modbus tcp plugin
For test I used another pi on which I only installed domoticz

I followed all wiki instructions but I get next errors

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2025-12-23 16:15:12.605 Error: pv: (SolarEdge_ModbusTCP) failed to load 'plugin.py', Python Path used was '/home/pi/domoticz/plugins/domoticz-solaredge-modbustcp-plugin/:/usr/lib/python313.zip:/usr/lib/python3.13:/usr/lib/python3.13/lib-dynload:/usr/local/lib/python3.13/dist-packages:/usr/lib/python3/dist-packages:/usr/lib/python3.13/dist-packages'.
2025-12-23 16:15:12.795 Error: pv: Traceback (most recent call last):
2025-12-23 16:15:12.795 Error: pv: File "/home/pi/domoticz/plugins/domoticz-solaredge-modbustcp-plugin/plugin.py", line 54, in <module>
2025-12-23 16:15:12.795 Error: pv: import solaredge_modbus
2025-12-23 16:15:12.796 Error: pv: ModuleNotFoundError: No module named 'solaredge_modbus'

Did I overlook something?

[waltervl]

You seem to not correctly load the extra python module
solaredge_modbus
Check the wiki for some hints https://wiki.domoticz.com/Using_Python_ ... leshooting

[madpatrick]

Check the instruction in the readme

https://github.com/addiejanssen/domotic ... tcp-plugin

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sudo pip3 install -r requirements.txt

[BartSr]

I did with this error as result

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2025-12-23 19:58:34.939 Error: pv hardware (2) thread seems to have ended unexpectedly
2025-12-23 19:58:47.453 Error: pv: (SolarEdge_ModbusTCP) failed to load 'plugin.py', Python Path used was '/home/pi/domoticz/plugins/domoticz-solaredge-modbustcp-plugin/:/usr/lib/python311.zip:/usr/lib/python3.11:/usr/lib/python3.11/lib-dynload:/usr/local/lib/python3.11/dist-packages:/usr/lib/python3/dist-packages:/usr/lib/python3.11/dist-packages'.
2025-12-23 19:58:47.557 Error: pv: Traceback (most recent call last):
2025-12-23 19:58:47.557 Error: pv: File "/home/pi/domoticz/plugins/domoticz-solaredge-modbustcp-plugin/plugin.py", line 54, in <module>
2025-12-23 19:58:47.557 Error: pv: import solaredge_modbus
2025-12-23 19:58:47.557 Error: pv: ModuleNotFoundError: No module named 'solaredge_modbus'

[madpatrick]

Check if solaredge_modbus is installed.
This is missing

[waltervl]

Are you running Domoticz in a Docker container? As that changes the way you need to install plugins: https://wiki.domoticz.com/Docker#Python_Plugins

[BartSr]

Walter, before I tried with dz in docker.
Now I prepaired a raspberry solely for this plugin. No docker.
I get stuck on the 'solaredge_modbus' part

[waltervl]

Do you get errors or warning messages when you want to install the solaredge module with the command from the plugin folder

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sudo pip3 install -r requirements.txt

Edit: And I see that the plugin author just changed the requirements.txt file https://github.com/addiejanssen/domotic ... ec4342449e

So you have to do a git pull and try again.

[BartSr]

after doing the sudo pip3 xxx (again) I get next warning which I faced before

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 error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
    python3-xyz, where xyz is the package you are trying to
    install.

    If you wish to install a non-Debian-packaged Python package,
    create a virtual environment using python3 -m venv path/to/venv.
    Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
    sure you have python3-full installed.

    For more information visit http://rptl.io/venv

note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.
hint: See PEP 668 for the detailed specification. 

domoticz log keeps saying:

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2025-12-24 13:39:52.809 Error: pv: (SolarEdge_ModbusTCP) failed to load 'plugin.py', Python Path used was '/home/pi/domoticz/plugins/domoticz-solaredge-modbustcp-plugin/:/usr/lib/python311.zip:/usr/lib/python3.11:/usr/lib/python3.11/lib-dynload:/usr/local/lib/python3.11/dist-packages:/usr/lib/python3/dist-packages:/usr/lib/python3.11/dist-packages'.
2025-12-24 13:39:52.942 Error: pv: Traceback (most recent call last):
2025-12-24 13:39:52.942 Error: pv: File "/home/pi/domoticz/plugins/domoticz-solaredge-modbustcp-plugin/plugin.py", line 54, in <module>
2025-12-24 13:39:52.942 Error: pv: import solaredge_modbus
2025-12-24 13:39:52.942 Error: pv: ModuleNotFoundError: No module named 'solaredge_modbus' 

do I need to create a special environment? I did not read any in fregards to this plugin

[jannl]

Yes, you need to solve that warning, otherwise Domoticz cannot find the python libraries.

Easiest propably is to use docker. Do not forget to install de solaredge_modbus inside the container.

[madpatrick]

You need to setup your python and pip correctly

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sudo apt install python3
sudo apt install python3-pip -y

Check yuou distro how to install it correctly

[BartSr]

@janni
Tried docker before but to much 'new' things to consider

@ madpatrick
Python and pip are already the newest versions (says bookworm os)

The real problem seems to be the solaredge_modbus lib.

[madpatrick]

Have you tried

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pip3 install --break-system-packages  solaredge_modbus

Check your installed modules

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pip3 list

[BartSr]

sudo pip3 install -r requirements.txt still results in:

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pi@raspberrypi:~/domoticz/plugins/domoticz-solaredge-modbustcp-plugin $ sudo pip3 install -r requirements.txt
error: externally-managed-environment

× This environment is externally managed
╰─> To install Python packages system-wide, try apt install
    python3-xyz, where xyz is the package you are trying to
    install.

    If you wish to install a non-Debian-packaged Python package,
    create a virtual environment using python3 -m venv path/to/venv.
    Then use path/to/venv/bin/python and path/to/venv/bin/pip. Make
    sure you have python3-full installed.

    For more information visit http://rptl.io/venv

note: If you believe this is a mistake, please contact your Python installation or OS distribution provider. You can override this, at the risk of breaking your Python installation or OS, by passing --break-system-packages.
hint: See PEP 668 for the detailed specification.

pip3 list showed solaredge_modbus but still next error in domoticz after restart service
really weird to me (must be my lack of knowledge)

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2025-12-24 17:12:46.503 Error: pv: (SolarEdge_ModbusTCP) failed to load 'plugin.py', Python Path used was '/home/pi/domoticz/plugins/domoticz-solaredge-modbustcp-plugin/:/usr/lib/python311.zip:/usr/lib/python3.11:/usr/lib/python3.11/lib-dynload:/usr/local/lib/python3.11/dist-packages:/usr/lib/python3/dist-packages:/usr/lib/python3.11/dist-packages'.
2025-12-24 17:12:46.608 Error: pv: Traceback (most recent call last):
2025-12-24 17:12:46.608 Error: pv: File "/home/pi/domoticz/plugins/domoticz-solaredge-modbustcp-plugin/plugin.py", line 54, in <module>
2025-12-24 17:12:46.608 Error: pv: import solaredge_modbus
2025-12-24 17:12:46.608 Error: pv: ModuleNotFoundError: No module named 'solaredge_modbus'

[madpatrick]

try this.... you have an error with installation of the module
Theplugin is different as the python package which you are missing

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pip3 install --break-system-packages  solaredge_modbus

[BartSr]

Is there a dedicated map where to navigate to before trying again?

[madpatrick]

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/usr/local/lib/python3.11/dist-packages/solaredge_modbus

Depending on your python version

[BartSr]

I tried into the xxxxx / solaredge_modbus map but nothing goes in there

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Defaulting to user installation because normal site-packages is not writeable
Looking in indexes: https://pypi.org/simple, https://www.piwheels.org/simple
Requirement already satisfied: solaredge_modbus in /home/pi/.local/lib/python3.11/site-packages (0.8.0)
Requirement already satisfied: pymodbus>=3.5.0 in /home/pi/.local/lib/python3.11/site-packages (from solaredge_modbus) (3.11.4)
Requirement already satisfied: pyserial-asyncio>=0.6.0 in /home/pi/.local/lib/python3.11/site-packages (from solaredge_modbus) (0.6)
Requirement already satisfied: pyserial in /home/pi/.local/lib/python3.11/site-packages (from pyserial-asyncio>=0.6.0->solaredge_modbus) (3.5)

domoticz derror:

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2025-12-24 17:53:32.159 Error: pv: (SolarEdge_ModbusTCP) failed to load 'plugin.py', Python Path used was '/home/pi/domoticz/plugins/domoticz-solaredge-modbustcp-plugin/:/usr/lib/python311.zip:/usr/lib/python3.11:/usr/lib/python3.11/lib-dynload:/usr/local/lib/python3.11/dist-packages:/usr/lib/python3/dist-packages:/usr/lib/python3.11/dist-packages'.
2025-12-24 17:53:32.215 Error: pv: Traceback (most recent call last):
2025-12-24 17:53:32.215 Error: pv: File "/home/pi/domoticz/plugins/domoticz-solaredge-modbustcp-plugin/plugin.py", line 59, in <module>
2025-12-24 17:53:32.215 Error: pv: from pymodbus.exceptions import ConnectionException
2025-12-24 17:53:32.215 Error: pv: ModuleNotFoundError: No module named 'pymodbus'

[jannl]

@janni
Tried docker before but to much 'new' things to consider

@ madpatrick
Python and pip are already the newest versions (says bookworm os)

The real problem seems to be the solaredge_modbus lib.

Docker is not that hard. But propably not something for Christmas Eve.

[BartSr]

I am having several containers for:
Mqtt
Zigbee2mqtt
Zwave2mqtt
Domoticz
So docker is not the problem but the plugin is causing my problems as you have to put lib's inside the container which is for now also a challenge. Yes, always if you know the 'how to' it seems not difficult all.
Bare install the plugin is even very difficult for me.