modbus integration not wroking after update to 2025.3.3

[mortzel]

The problem

After updating to the newest version the modbus integration stop working.

What version of Home Assistant Core has the issue?

core-2025.3.3

What was the last working version of Home Assistant Core?

No response

What type of installation are you running?

Home Assistant Container

Integration causing the issue

modbus

Link to integration documentation on our website

No response

Diagnostics information

No response

Example YAML snippet

- name: hub1
  type: tcp
  host: XXX
  port: 502
  sensors:
    - name: "Serverschrank - Leistung"
      unique_id: 23b28fcb-7fda-4bd1-ad51-f8860b0ab69a
      address: 0x000c
      device_address: 6
      input_type: input
      scan_interval: 15
      precision: 2
      data_type: float32
      unit_of_measurement: W
      state_class: measurement
      device_class: power

Anything in the logs that might be useful for us?

Setup failed for 'modbus': Unable to import component: cannot import name 'FramerType' from 'pymodbus.framer' (/usr/local/lib/python3.13/site-packages/pymodbus/framer/__init__.py)

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/loader.py", line 1014, in async_get_component
    comp = await self.hass.async_add_import_executor_job(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        self._get_component, True
        ^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/usr/local/lib/python3.13/concurrent/futures/thread.py", line 59, in run
    result = self.fn(*self.args, **self.kwargs)
  File "/usr/src/homeassistant/homeassistant/loader.py", line 1074, in _get_component
    ComponentProtocol, importlib.import_module(self.pkg_path)
                       ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/util/loop.py", line 201, in protected_loop_func
    return func(*args, **kwargs)
  File "/usr/local/lib/python3.13/importlib/__init__.py", line 88, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 1026, in exec_module
  File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
  File "/usr/src/homeassistant/homeassistant/components/modbus/__init__.py", line 146, in <module>
    from .modbus import DATA_MODBUS_HUBS, ModbusHub, async_modbus_setup
  File "/usr/src/homeassistant/homeassistant/components/modbus/modbus.py", line 17, in <module>
    from pymodbus.framer import FramerType
ImportError: cannot import name 'FramerType' from 'pymodbus.framer' (/usr/local/lib/python3.13/site-packages/pymodbus/framer/__init__.py)

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/setup.py", line 340, in _async_setup_component
    component = await integration.async_get_component()
                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/loader.py", line 1034, in async_get_component
    self._component_future.result()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "/usr/src/homeassistant/homeassistant/loader.py", line 1026, in async_get_component
    comp = self._get_component()
  File "/usr/src/homeassistant/homeassistant/loader.py", line 1074, in _get_component
    ComponentProtocol, importlib.import_module(self.pkg_path)
                       ~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/util/loop.py", line 201, in protected_loop_func
    return func(*args, **kwargs)
  File "/usr/local/lib/python3.13/importlib/__init__.py", line 88, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1387, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1360, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1331, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 935, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 1026, in exec_module
  File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed
  File "/usr/src/homeassistant/homeassistant/components/modbus/__init__.py", line 146, in <module>
    from .modbus import DATA_MODBUS_HUBS, ModbusHub, async_modbus_setup
  File "/usr/src/homeassistant/homeassistant/components/modbus/modbus.py", line 17, in <module>
    from pymodbus.framer import FramerType
ImportError: cannot import name 'FramerType' from 'pymodbus.framer' (/usr/local/lib/python3.13/site-packages/pymodbus/framer/__init__.py)




Detected blocking call to import_module with args ('homeassistant.components.modbus',) in /usr/src/homeassistant/homeassistant/loader.py, line 1074: ComponentProtocol, importlib.import_module(self.pkg_path) inside the event loop; This is causing stability issues. Please create a bug report at https://github.com/home-assistant/core/issues?q=is%3Aopen+is%3Aissue For developers, please see https://developers.home-assistant.io/docs/asyncio_blocking_operations/#import_module Traceback (most recent call last): File "<frozen runpy>", line 198, in _run_module_as_main File "<frozen runpy>", line 88, in _run_code File "/usr/src/homeassistant/homeassistant/__main__.py", line 227, in <module> sys.exit(main()) File "/usr/src/homeassistant/homeassistant/__main__.py", line 213, in main exit_code = runner.run(runtime_conf) File "/usr/src/homeassistant/homeassistant/runner.py", line 154, in run return loop.run_until_complete(setup_and_run_hass(runtime_config)) File "/usr/local/lib/python3.13/asyncio/base_events.py", line 712, in run_until_complete self.run_forever() File "/usr/local/lib/python3.13/asyncio/base_events.py", line 683, in run_forever self._run_once() File "/usr/local/lib/python3.13/asyncio/base_events.py", line 2040, in _run_once handle._run() File "/usr/local/lib/python3.13/asyncio/events.py", line 89, in _run self._context.run(self._callback, *self._args) File "/usr/src/homeassistant/homeassistant/setup.py", line 171, in async_setup_component result = await _async_setup_component(hass, domain, config) File "/usr/src/homeassistant/homeassistant/setup.py", line 340, in _async_setup_component component = await integration.async_get_component() File "/usr/src/homeassistant/homeassistant/loader.py", line 1026, in async_get_component comp = self._get_component() File "/usr/src/homeassistant/homeassistant/loader.py", line 1074, in _get_component ComponentProtocol, importlib.import_module(self.pkg_path)

Additional information

No response

[home-assistant]

modbus documentation
modbus source

[WillCodeForCats]

Are you running any custom integrations that use modbus?

[mortzel]

Yeah "SolarEdge Modbus" which is working.

[WillCodeForCats]

You have to remove that custom integration and restart. It pins to an older, incompatible version of pymodbus that will not work with the core modbus integration in current versions of Home Assistant, or any other up to date integration.

You could try my integration solaredge-modbus-multi which is kept up to date with current versions. Or you can wait for the one you're using to update.

[mortzel]

Work's again. Thanks
I will check out your integration