[FR]: SolaX - Add support for X3-MIC with Serial Starting MU902T

[CVKBaca]

Description

Add suport inverter type Solax X3-MIC (model: X3-9.0-T-D) SN: MU902T

Suggested Solution

Hello It is posible add suport Solax X3-MIC sn MU902T******** mayby protocol is similar to other solax gen1.
Thanks

Alternatives

No response

Additional Context

Interface: Waveshare RS485 TO POE ETH (B)

Logger: homeassistant.config_entries
Zdroj: config_entries.py:594
Prvýkrát sa vyskytol: 08:32:58 (1 výskytov)
Naposledy prihlásený: 08:32:58

Error setting up entry SolaX for solax_modbus
Traceback (most recent call last):
File "/usr/src/homeassistant/homeassistant/config_entries.py", line 594, in async_setup
result = await component.async_setup_entry(hass, self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/config/custom_components/solax_modbus/init.py", line 188, in async_setup_entry
await hub.async_init()
File "/config/custom_components/solax_modbus/init.py", line 329, in async_init
await asyncio.sleep(10)
File "/usr/local/lib/python3.12/asyncio/tasks.py", line 665, in sleep
return await future
^^^^^^^^^^^^
asyncio.exceptions.CancelledError

[CVKBaca]

With ARM firmware version 1.38 and after editing the files plugin_solax.py and plugin_solax.cpython-312.pyc, I got Modbus communication up and running.
I added the following piece of code to plugin_solax.py:

elif seriesnumber.startswith('MU902T'):
    invertertype = MIC | GEN | X3 # MIC X3
    self.inverter_model = "X3-MIC""

I added the following to the plugin_solax.cpython-312.pyc file, although I'm not sure if it was necessary. :)

The result is as follows. The only sensor that didn’t load and isn’t working yet is the RTC sensor.

[wills106]

Do you perhaps need to first sync the RTC for it to return values?

[CVKBaca]

Do you perhaps need to first sync the RTC for it to return values?

Yes, of course, I tried that, but the result is the same. However, this sensor is not essential. All other sensors are working correctly.

[Kars-de-Jong]

The RTC registers all read back as 0 on my X3-MIC as well (model: X3-8.0-T-D).
Firmware was upgraded last week, made no difference.

[Kars-de-Jong]

Now that I am simulating a meter, I found that some sensors are wrongly configured for the X3-MIC Gen1. The meter power is treated as inverter power, and the inverter power (total and separate phases) are treated as measured power.
Obviously, this also causes the grid import and grid export sensors to be wrong.
Unfortunately changing this will be a breaking change (unless some kind of migration can be done).

See PR #1154.