[Bug]: Can't connect to inverter / Reading from the inverter failed.

[privjimmie]

Describe the issue

Hi,

When trying to add the integration (connect via network), I get "Reading from the inverter failed."

The dongle is connected to my network via wired powerline (https://www.tp-link.com/se/home-networking/powerline/tl-pa4010p-kit/)

I identified the IP and port through Zenmap
Discovered open port 502/tcp on 192.168.0.136
502/tcp open tcpwrapped
MAC Address: 5C:64:7A:5C:8E:E3 (Huawei Technologies)

However, I noticed that I weren't able to ping it from HA terminal (but I can from my host)
https://community.home-assistant.io/t/cant-ping-network-device-from-ha-is-pingable-from-host/487780

So, I also tried setting up a modbus proxy on my host
https://github.com/tiagocoutinho/modbus-proxy

I attached two sets of debug logs below. First connecting directly to it 192.168.0.136:502 and the second via the proxy 192.168.0.199:5020

Bescribe your Huawei Solar Setup

Inverter Type: SUN2000-6KTL-M1
Inverter Firmware version: V100R001C00SPC146
SDongle present: yes
Power meter present: three phase
Battery: LUNA2000 5kWh
Battery Firmware version: V100R002C00SPC114

How do you connect to the inverter?

Via the SDongle, wired connection

Upload your Diagnostics File

Don't have this since I can't add the integration due to connectivity issues

Upload your relevant debug logs

######## LOG, ATTEMP 1 DIRECTLY AGAINST DONGLE #########

2022-11-18 08:56:04.931 WARNING (SyncWorker_0) [homeassistant.loader] We found a custom integration huawei_solar which has not been tested by Home Assistant. This component might cause stability problems, be sure to disable it if you experience issues with Home Assistant
2022-11-18 08:56:04.932 WARNING (SyncWorker_0) [homeassistant.loader] We found a custom integration hacs which has not been tested by Home Assistant. This component might cause stability problems, be sure to disable it if you experience issues with Home Assistant
2022-11-18 08:56:04.933 WARNING (SyncWorker_0) [homeassistant.loader] We found a custom integration nordpool which has not been tested by Home Assistant. This component might cause stability problems, be sure to disable it if you experience issues with Home Assistant
2022-11-18 08:56:04.933 WARNING (SyncWorker_0) [homeassistant.loader] We found a custom integration nodered which has not been tested by Home Assistant. This component might cause stability problems, be sure to disable it if you experience issues with Home Assistant
2022-11-18 08:57:44.336 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting to 192.168.0.136:502.
2022-11-18 08:57:44.336 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:57:44.339 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client connected to modbus server
2022-11-18 08:57:44.339 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol made connection.
2022-11-18 08:57:44.339 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Connected to 192.168.0.136:502.
2022-11-18 08:57:44.369 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client disconnected from modbus server: None
2022-11-18 08:57:44.369 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol lost connection.
2022-11-18 08:57:44.369 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 100 ms before next connection attempt.
2022-11-18 08:57:44.470 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:57:44.473 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client connected to modbus server
2022-11-18 08:57:44.473 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol made connection.
2022-11-18 08:57:44.473 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Connected to 192.168.0.136:502.
2022-11-18 08:57:44.508 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client disconnected from modbus server: None
2022-11-18 08:57:44.508 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol lost connection.
2022-11-18 08:57:44.509 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 100 ms before next connection attempt.
2022-11-18 08:57:44.610 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:57:44.612 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client connected to modbus server
2022-11-18 08:57:44.613 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol made connection.
2022-11-18 08:57:44.613 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Connected to 192.168.0.136:502.
2022-11-18 08:57:44.648 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client disconnected from modbus server: None
2022-11-18 08:57:44.649 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol lost connection.
2022-11-18 08:57:44.649 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 100 ms before next connection attempt.
2022-11-18 08:57:44.750 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:57:44.753 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client connected to modbus server
2022-11-18 08:57:44.753 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol made connection.
2022-11-18 08:57:44.753 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Connected to 192.168.0.136:502.
2022-11-18 08:57:44.788 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client disconnected from modbus server: None
2022-11-18 08:57:44.788 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol lost connection.
2022-11-18 08:57:44.790 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 100 ms before next connection attempt.
2022-11-18 08:57:44.891 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:57:44.894 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client connected to modbus server
2022-11-18 08:57:44.894 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol made connection.
2022-11-18 08:57:44.894 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Connected to 192.168.0.136:502.
2022-11-18 08:57:44.929 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client disconnected from modbus server: None
2022-11-18 08:57:44.929 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol lost connection.
2022-11-18 08:57:44.929 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 100 ms before next connection attempt.
2022-11-18 08:57:45.031 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:57:45.034 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client connected to modbus server
2022-11-18 08:57:45.034 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol made connection.
2022-11-18 08:57:45.035 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Connected to 192.168.0.136:502.
2022-11-18 08:57:45.068 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client disconnected from modbus server: None
2022-11-18 08:57:45.069 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol lost connection.
2022-11-18 08:57:45.070 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 100 ms before next connection attempt.
2022-11-18 08:57:45.174 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:57:45.177 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client connected to modbus server
2022-11-18 08:57:45.177 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol made connection.
2022-11-18 08:57:45.178 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Connected to 192.168.0.136:502.
2022-11-18 08:57:45.221 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client disconnected from modbus server: None
2022-11-18 08:57:45.221 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol lost connection.
2022-11-18 08:57:45.222 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 100 ms before next connection attempt.
2022-11-18 08:57:45.323 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:57:45.337 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client connected to modbus server
2022-11-18 08:57:45.337 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol made connection.
2022-11-18 08:57:45.338 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Connected to 192.168.0.136:502.
2022-11-18 08:57:45.341 DEBUG (MainThread) [huawei_solar.huawei_solar] Reading register 43006
2022-11-18 08:57:45.341 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] send: 0x0 0x1 0x0 0x0 0x0 0x6 0x0 0x3 0xa7 0xfe 0x0 0x1
2022-11-18 08:57:45.342 DEBUG (MainThread) [pymodbus.transaction] Adding transaction 1
2022-11-18 08:57:45.368 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client disconnected from modbus server: None
2022-11-18 08:57:45.369 DEBUG (MainThread) [pymodbus.transaction] Getting transaction 1
2022-11-18 08:57:45.369 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol lost connection.
2022-11-18 08:57:45.370 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 100 ms before next connection attempt.
2022-11-18 08:57:45.370 ERROR (MainThread) [huawei_solar.huawei_solar] Could not read register value, has another device interrupted the connection?
2022-11-18 08:57:45.382 ERROR (MainThread) [huawei_solar.huawei_solar] Aborting client creation due to error.
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 356, in _do_read
    response = await self._client.protocol.read_holding_registers(
  File "/usr/local/lib/python3.10/site-packages/pymodbus/client/asynchronous/async_io/__init__.py", line 35, in execute
    resp = await asyncio.wait_for(req, timeout=self._timeout)
  File "/usr/local/lib/python3.10/asyncio/tasks.py", line 445, in wait_for
    return fut.result()
pymodbus.exceptions.ConnectionException: Modbus Error: [Connection] Connection lost during request

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 157, in create
    await huawei_solar._initialize()
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 120, in _initialize
    self.time_zone = (await self.get(rn.TIME_ZONE)).value
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 254, in get
    return (await self.get_multiple([name], slave))[0]
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 296, in get_multiple
    response = await self._read_registers(
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 389, in _read_registers
    result = await _do_read()
  File "/usr/local/lib/python3.10/site-packages/backoff/_async.py", line 151, in retry
    ret = await target(*args, **kwargs)
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 385, in _do_read
    raise ReadException(message) from err
huawei_solar.exceptions.ReadException: Could not read register value, has another device interrupted the connection?
2022-11-18 08:57:45.383 ERROR (MainThread) [custom_components.huawei_solar.config_flow] Could not read register value, has another device interrupted the connection?
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 356, in _do_read
    response = await self._client.protocol.read_holding_registers(
  File "/usr/local/lib/python3.10/site-packages/pymodbus/client/asynchronous/async_io/__init__.py", line 35, in execute
    resp = await asyncio.wait_for(req, timeout=self._timeout)
  File "/usr/local/lib/python3.10/asyncio/tasks.py", line 445, in wait_for
    return fut.result()
pymodbus.exceptions.ConnectionException: Modbus Error: [Connection] Connection lost during request

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/config/custom_components/huawei_solar/config_flow.py", line 384, in async_step_setup_network
    info = await validate_network_setup(user_input)
  File "/config/custom_components/huawei_solar/config_flow.py", line 114, in validate_network_setup
    bridge = await HuaweiSolarBridge.create(
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/bridge.py", line 77, in create
    client = await AsyncHuaweiSolar.create(host, port, slave_id, loop=loop)
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 167, in create
    raise err
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 157, in create
    await huawei_solar._initialize()
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 120, in _initialize
    self.time_zone = (await self.get(rn.TIME_ZONE)).value
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 254, in get
    return (await self.get_multiple([name], slave))[0]
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 296, in get_multiple
    response = await self._read_registers(
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 389, in _read_registers
    result = await _do_read()
  File "/usr/local/lib/python3.10/site-packages/backoff/_async.py", line 151, in retry
    ret = await target(*args, **kwargs)
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 385, in _do_read
    raise ReadException(message) from err
huawei_solar.exceptions.ReadException: Could not read register value, has another device interrupted the connection?
2022-11-18 08:57:45.472 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:57:45.474 WARNING (MainThread) [pymodbus.client.asynchronous.async_io] Failed to connect: Multiple exceptions: [Errno 111] Connect call failed ('::1', 502, 0, 0), [Errno 111] Connect call failed ('127.0.0.1', 502)
2022-11-18 08:57:45.475 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 200 ms before next connection attempt.
2022-11-18 08:57:45.676 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:57:45.680 WARNING (MainThread) [pymodbus.client.asynchronous.async_io] Failed to connect: Multiple exceptions: [Errno 111] Connect call failed ('::1', 502, 0, 0), [Errno 111] Connect call failed ('127.0.0.1', 502)
2022-11-18 08:57:45.681 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 400 ms before next connection attempt.
2022-11-18 08:57:46.083 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:57:46.087 WARNING (MainThread) [pymodbus.client.asynchronous.async_io] Failed to connect: Multiple exceptions: [Errno 111] Connect call failed ('::1', 502, 0, 0), [Errno 111] Connect call failed ('127.0.0.1', 502)
2022-11-18 08:57:46.088 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 800 ms before next connection attempt.
2022-11-18 08:57:46.892 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:57:46.896 WARNING (MainThread) [pymodbus.client.asynchronous.async_io] Failed to connect: Multiple exceptions: [Errno 111] Connect call failed ('::1', 502, 0, 0), [Errno 111] Connect call failed ('127.0.0.1', 502)
2022-11-18 08:57:46.898 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 1600 ms before next connection attempt.
2022-11-18 08:57:48.500 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:57:48.503 WARNING (MainThread) [pymodbus.client.asynchronous.async_io] Failed to connect: Multiple exceptions: [Errno 111] Connect call failed ('::1', 502, 0, 0), [Errno 111] Connect call failed ('127.0.0.1', 502)
2022-11-18 08:57:48.504 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 3200 ms before next connection attempt.
2022-11-18 08:57:51.706 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:57:51.707 WARNING (MainThread) [pymodbus.client.asynchronous.async_io] Failed to connect: Multiple exceptions: [Errno 111] Connect call failed ('::1', 502, 0, 0), [Errno 111] Connect call failed ('127.0.0.1', 502)
2022-11-18 08:57:51.707 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 6400 ms before next connection attempt.




######## LOG, ATTEMP 2 VIA PROXY #########
######## https://github.com/tiagocoutinho/modbus-proxy


2022-11-18 08:59:15.746 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting to 192.168.0.199:5020.
2022-11-18 08:59:15.746 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:59:15.749 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client connected to modbus server
2022-11-18 08:59:15.749 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol made connection.
2022-11-18 08:59:15.749 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Connected to 192.168.0.199:5020.
2022-11-18 08:59:16.752 DEBUG (MainThread) [huawei_solar.huawei_solar] Reading register 43006
2022-11-18 08:59:16.752 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] send: 0x0 0x1 0x0 0x0 0x0 0x6 0x0 0x3 0xa7 0xfe 0x0 0x1
2022-11-18 08:59:16.754 DEBUG (MainThread) [pymodbus.transaction] Adding transaction 1
2022-11-18 08:59:16.894 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Client disconnected from modbus server: None
2022-11-18 08:59:16.894 DEBUG (MainThread) [pymodbus.transaction] Getting transaction 1
2022-11-18 08:59:16.894 INFO (MainThread) [pymodbus.client.asynchronous.async_io] Protocol lost connection.
2022-11-18 08:59:16.895 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 100 ms before next connection attempt.
2022-11-18 08:59:16.896 ERROR (MainThread) [huawei_solar.huawei_solar] Could not read register value, has another device interrupted the connection?
2022-11-18 08:59:16.897 ERROR (MainThread) [huawei_solar.huawei_solar] Aborting client creation due to error.
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 356, in _do_read
    response = await self._client.protocol.read_holding_registers(
  File "/usr/local/lib/python3.10/site-packages/pymodbus/client/asynchronous/async_io/__init__.py", line 35, in execute
    resp = await asyncio.wait_for(req, timeout=self._timeout)
  File "/usr/local/lib/python3.10/asyncio/tasks.py", line 445, in wait_for
    return fut.result()
pymodbus.exceptions.ConnectionException: Modbus Error: [Connection] Connection lost during request

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 157, in create
    await huawei_solar._initialize()
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 120, in _initialize
    self.time_zone = (await self.get(rn.TIME_ZONE)).value
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 254, in get
    return (await self.get_multiple([name], slave))[0]
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 296, in get_multiple
    response = await self._read_registers(
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 389, in _read_registers
    result = await _do_read()
  File "/usr/local/lib/python3.10/site-packages/backoff/_async.py", line 151, in retry
    ret = await target(*args, **kwargs)
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 385, in _do_read
    raise ReadException(message) from err
huawei_solar.exceptions.ReadException: Could not read register value, has another device interrupted the connection?
2022-11-18 08:59:16.897 ERROR (MainThread) [custom_components.huawei_solar.config_flow] Could not read register value, has another device interrupted the connection?
Traceback (most recent call last):
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 356, in _do_read
    response = await self._client.protocol.read_holding_registers(
  File "/usr/local/lib/python3.10/site-packages/pymodbus/client/asynchronous/async_io/__init__.py", line 35, in execute
    resp = await asyncio.wait_for(req, timeout=self._timeout)
  File "/usr/local/lib/python3.10/asyncio/tasks.py", line 445, in wait_for
    return fut.result()
pymodbus.exceptions.ConnectionException: Modbus Error: [Connection] Connection lost during request

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "/config/custom_components/huawei_solar/config_flow.py", line 384, in async_step_setup_network
    info = await validate_network_setup(user_input)
  File "/config/custom_components/huawei_solar/config_flow.py", line 114, in validate_network_setup
    bridge = await HuaweiSolarBridge.create(
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/bridge.py", line 77, in create
    client = await AsyncHuaweiSolar.create(host, port, slave_id, loop=loop)
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 167, in create
    raise err
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 157, in create
    await huawei_solar._initialize()
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 120, in _initialize
    self.time_zone = (await self.get(rn.TIME_ZONE)).value
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 254, in get
    return (await self.get_multiple([name], slave))[0]
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 296, in get_multiple
    response = await self._read_registers(
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 389, in _read_registers
    result = await _do_read()
  File "/usr/local/lib/python3.10/site-packages/backoff/_async.py", line 151, in retry
    ret = await target(*args, **kwargs)
  File "/usr/local/lib/python3.10/site-packages/huawei_solar/huawei_solar.py", line 385, in _do_read
    raise ReadException(message) from err
huawei_solar.exceptions.ReadException: Could not read register value, has another device interrupted the connection?
2022-11-18 08:59:16.997 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:59:16.999 WARNING (MainThread) [pymodbus.client.asynchronous.async_io] Failed to connect: Multiple exceptions: [Errno 111] Connect call failed ('::1', 5020, 0, 0), [Errno 111] Connect call failed ('127.0.0.1', 5020)
2022-11-18 08:59:17.000 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 200 ms before next connection attempt.
2022-11-18 08:59:17.202 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:59:17.203 WARNING (MainThread) [pymodbus.client.asynchronous.async_io] Failed to connect: Multiple exceptions: [Errno 111] Connect call failed ('::1', 5020, 0, 0), [Errno 111] Connect call failed ('127.0.0.1', 5020)
2022-11-18 08:59:17.204 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 400 ms before next connection attempt.
2022-11-18 08:59:17.605 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:59:17.606 WARNING (MainThread) [pymodbus.client.asynchronous.async_io] Failed to connect: Multiple exceptions: [Errno 111] Connect call failed ('::1', 5020, 0, 0), [Errno 111] Connect call failed ('127.0.0.1', 5020)
2022-11-18 08:59:17.607 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 800 ms before next connection attempt.
2022-11-18 08:59:18.409 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Connecting.
2022-11-18 08:59:18.411 WARNING (MainThread) [pymodbus.client.asynchronous.async_io] Failed to connect: Multiple exceptions: [Errno 111] Connect call failed ('::1', 5020, 0, 0), [Errno 111] Connect call failed ('127.0.0.1', 5020)
2022-11-18 08:59:18.411 DEBUG (MainThread) [pymodbus.client.asynchronous.async_io] Waiting 1600 ms before next connection attempt.

Please confirm the following:

• The problem is still present in the latest release of this integration.
• I did not find an existing issue describing this problem.
• I did upload the diagnostics-file that I could retrieve from the 'Devices & Services Page'
• I increased the logging configuration, restarted HA, and have copied all relevant log lines from the 'Full Logs' into the textarea.

[fling7]

I sadly had the same issue as your attemp #1 now. Have you had any success yet?

[privjimmie]

Unfortunately no luck here yet

[fling7]

Someone answerd me in the home assistant forum, have you tried out this configuration? "502,1,enable", worked for me too but i first had to remove the repository completely, install it new and then restart.

[privjimmie]

ah okey great that you got it running. That didn't help on my end though
however, I finally got it running as well. It was the firmware version of the dongle in my case.
I had V100R001C00SPC119 installed, and updated to V100R001C00SPC130, then it worked!

[peros550]

I would like to share my case because I also had problems connecting my inverter with this integration. The inverter is connected to my router's SSID using a dongle. I was trying to setup the inverter's dongle IP address to the HA. What helped a lot was to go at SUN2000 app , at Router connection settings and make sure the O&M checkbox was checked. After that, I was able to use this integration.