[Add/Update Registries] for S1256 with unnamed registries (id:12801)

[mbraem]

Add/Update Registries Request

Heatpump model: S1256

Issue #187 describes how to read/write the set point in an RMU S40 thermostat accessory. As far as I can see, this is not further explored.

I can confirm this works. My heatpump does not name this register explicitely. Its name starts with id:... and is ignored by the convert_csv tool. However, I added the following to the extensions file and can now read/write the value.

{
  "description": "Undocumented id:12801 coil to read/write temperature set point in RMU S40",
  "files": ["s1156_s1256.json"],
  "data": {
    "42506": {
     "title": "RMU S40 1: temperature set point",
     "factor": 10,
     "unit": "\u00b0C",
     "size": "s32",
     "min": 50.0,
     "max": 350.0,
     "default": 200.0,
     "name": "rmus40_1-temperature_set-42506",
     "write": true
    }
}

Most likely, there are other registries that function for additional accessories. This is probably also not limited to the S1256 model.

How can we proceed to make this generally available?