Home Manager 1.0 support

[solbadguy2010]

Is your feature request related to a problem? Please describe:

Describe the solution you'd like: I would like to "disable" the need for a Home Manager 2.0. For me it would be enough to only use direct modbus communication with the inverter to see my live data in homekit.

Describe alternatives you've considered: I used the https://github.com/codyc1515/homebridge-sma-inverter plugin until now, but i would love to use an modern and updatetd one

Additional context: Inverter:

• Model: SMA Sunny Tripower 8000 TL-20

[solbadguy2010]

I currently receive this error when i try to start your Plugin:

[13/03/2023, 10:31:57] [homebridge-sma-home-manager] Launched child bridge with PID 16943 [13/03/2023, 10:31:57] Registering platform 'homebridge-sma-home-manager.SMAHomeManager' [13/03/2023, 10:31:57] [homebridge-sma-home-manager] Loaded homebridge-sma-home-manager v1.0.1 child bridge successfully [13/03/2023, 10:31:58] [homebridge-sma-home-manager] Restarting child bridge... [13/03/2023, 10:31:58] Got SIGTERM, shutting down child bridge process...

/usr/local/lib/node_modules/homebridge-sma-home-manager/index.js:330 serialNumber = data.buffer.readUInt32BE(); ^ TypeError: Cannot read properties of undefined (reading 'buffer') at SMAHomeManager. (/usr/local/lib/node_modules/homebridge-sma-home-manager/index.js:330:25) at ModbusRTU.writeFC4 (/usr/local/lib/node_modules/homebridge-sma-home-manager/node_modules/modbus-serial/index.js:544:19) at ModbusRTU.writeFC3 (/usr/local/lib/node_modules/homebridge-sma-home-manager/node_modules/modbus-serial/index.js:530:10) at ModbusRTU.converted [as readHoldingRegisters] (/usr/local/lib/node_modules/homebridge-sma-home-manager/node_modules/modbus-serial/apis/promise.js:36:27) at SMAHomeManager._readInverterMetadata (/usr/local/lib/node_modules/homebridge-sma-home-manager/index.js:329:11) at SMAHomeManager. (/usr/local/lib/node_modules/homebridge-sma-home-manager/index.js:206:8) at listOnTimeout (node:internal/timers:564:17) at processTimers (node:internal/timers:507:7) [13/03/2023, 10:31:58] [homebridge-sma-home-manager] Child bridge process ended [13/03/2023, 10:31:58] [homebridge-sma-home-manager] Process Ended. Code: 1, Signal: null [13/03/2023, 10:32:04] [homebridge-sma-home-manager] Stopping child bridge (will not restart)... [13/03/2023, 10:32:14] [homebridge-sma-home-manager] Bridge already shutting down or stopped.

[wimleers]

• I will not add support for an “inverter only” mode. See https://github.com/wimleers/homebridge-sma-home-manager/issues/2#issuecomment-1452285495 — plus I don’t want to maintain even more than what this already does!
• Do you actually have a Home Manager 1.0?

Why not just continue to use that old plugin? It’s probably good enough?

[solbadguy2010]

I want to have a plugin that is in active development. Yes, i have a Home Manager 1.0. Maybe its possible to get this one compatible with your plugin?

[wimleers]

Yes, quite possibly!

If you could collect all relevant technical documentation, that would definitely speed up the process of getting an answer to that! 😊

[solbadguy2010]

What do you need? Please also look in Twitter Chat :-)

[wimleers]

What's Twitter Chat? 😅

I need the same kind of technical documentation for the SMA Home Manager 1.0 as exists for SMA Home Manager 2.0 and SMA Energy Meter: https://developer.sma.de/fileadmin/content/global/Partner/Documents/SMA_Labs/EMETER-Protokoll-TI-en-10.pdf — which is linked from the README.md of this project.

[wimleers]

Note that adding support for an inverter-only mode is not only a pain because of https://github.com/wimleers/homebridge-sma-home-manager/issues/7#issuecomment-1468301107, but also because the current plugin logic actually relies less on reading data from the inverter than https://github.com/codyc1515/homebridge-sma-inverter did, because much of the necessary data arrives every second already anyway from the Home Manager's Speedwire multicasting!

In other words: this would add significant complexity. And it'd increase the communication rate with the inverter via Modbus, which has a limited communication frequency and is rather sensitive/error-prone to concurrent requests.

For that reason, I just retitled this to Home Manager 1.0 support.

[solbadguy2010]

Twitter PM? I wrote you a messagt there :-)

Home Manager 1.0 has no build in Power Meter functionality.

[solbadguy2010]

By the way, do you know this URL? https://www.sunnyportal.com/homemanager You need to login to your Sunny Portal first. Maybe a way to create an online version of the plugin...

[wimleers]

Twitter PM? I wrote you a messagt there :-)

Ah! I never check that 😅

Home Manager 1.0 has no build in Power Meter functionality.

Ah 😬 I just was able to confirm that on the official docs at https://my.sma-service.com/s/article/Controlling-Active-Power-Limitation-With-Sunny-Home-Manager-1-0?language=en_US 👍

That means it cannot possibly work … but perhaps you have an SMA Energy Meter?

By the way, do you know this URL? https://www.sunnyportal.com/homemanager You need to login to your Sunny Portal first. Maybe a way to create an online version of the plugin...

I did not! That currently returns this for me:

{
  "__type": "LiveDataUI",
  "Timestamp": {
    "__type": "DateTime",
    "DateTime": "2023-03-15T15:26:26",
    "Kind": "Unspecified"
  },
  "TimestampUtc": {
    "__type": "DateTime",
    "DateTime": "2023-03-15T14:26:26",
    "Kind": "Utc"
  },
  "PV": 1372,
  "FeedIn": 698,
  "GridConsumption": 0,
  "DirectConsumption": null,
  "SelfConsumption": 674,
  "SelfSupply": 674,
  "TotalConsumption": 674,
  "DirectConsumptionQuote": null,
  "SelfConsumptionQuote": 49,
  "AutarkyQuote": 100,
  "BatteryIn": null,
  "BatteryOut": null,
  "BatteryChargeStatus": null,
  "OperationHealth": null,
  "BatteryStateOfHealth": null,
  "ModuleTemperature": null,
  "EnvironmentTemperature": null,
  "WindSpeed": null,
  "Insolation": null,
  "BatteryMode": null,
  "InfoMessages": [

  ],
  "WarningMessages": [

  ],
  "ErrorMessages": [

  ],
  "Info": {

  }
}

… which is both inaccurate and incomplete 🙈

On top of that, this would introduce:

• a cloud dependency … (very bad! I want this plugin to work even without internet access, just like every officially HomeKit-certified device)
• … on a non-official API (very bad! that means it can stop working at any point)

[solbadguy2010]

I have no SMA Energy Meter but a third party one. My sunny portal knows how much power the house uses in total.

sorry, that the api is not helping. My idea was maybe create a second (online only) plugin :-)

[wimleers]

How does that third party one communicate with Sunny Portal?

[solbadguy2010]

Via Bus wires i think

[wimleers]

Woah! Yeah. That looks ancient compared to the Home Manager 2.0 😅 How old is this setup?

Note that this plugin should work just fine with the SMA Energy Meter too. The cost of that is ~1/3rd lower than that of an SMA Home Manager 2.0. If you really want to use this plugin, I suggest you update to that.

I do not have access to a Home Manager 1.0, so even if I had the time, I would never be able to add support for this.

[solbadguy2010]

It was build 2013 :-D

My dad has an Home Manager 1.0 + SMA Energy Meter setup. I can test this and give you a feedback.

Please have a last look on Twitter PM ;-)

[wimleers]

That sounds awesome! Looking forward to hearing from you, please create a new issue!