Question for MQTT auto discovery format

[DeltaTango69]

Hello, where do the values for min, max or step actually come from? Directly from the heating system? Because I can't find any information about this in the csv:

[mixer]r;w |   | TempDesired | Raumsolltemperatur |   |   |   | 3200 |   |   | temp |   |   | Raumsolltemperatur |   |  
-- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | -- | --

 {
          "device_class": null,
          "disabled_by": null,
          "disabled": false,
          "entity_category": null,
          "entity_id": "number.ebusd_mc_tempdesired",
          "icon": null,
          "original_device_class": "temperature",
          "original_icon": null,
          "state": {
            "entity_id": "number.ebusd_mc_tempdesired",
            "state": "unknown",
            "attributes": {
              "min": -2047.94,
              "max": 2047.94,
              "step": 0.06,
              "mode": "auto",
              "unit_of_measurement": "\u00b0C",
              "device_class": "temperature",
              "friendly_name": "Verschiebung Heizkurve"
            },
            "last_changed": "2025-03-07T17:21:26.289109+00:00",
            "last_reported": "2025-03-07T17:21:26.289109+00:00",
            "last_updated": "2025-03-07T17:21:26.289109+00:00"
          },
          "unit_of_measurement": "\u00b0C"
        },