# KNX\_Read\_Data

## `KNX_Read_Data` (FB)

FUNCTION\_BLOCK KNX\_Read\_Data EXTENDS SlaveBasic

#### Overview

The KNX\_Read\_Data function block is used to receive KNX data without specific DPT conversion. It is especially useful for progressive controls, such as in lighting control.

#### Inputs

| Inputs             | Initial value | Description                |
| ------------------ | ------------- | -------------------------- |
| `byAdrGroup`       | *0*           | Group address (0-255)      |
| `byAdrMiddleGroup` | *0*           | Middle group address (0-7) |
| `byAdrMainGroup`   | *0*           | Main group address (0-31)  |

#### Outputs

* `abyDaten` (ARRAY\[0..38] OF BYTE): Received raw data

#### Usage

1. **Configure group address**:
   * Set `byAdrMainGroup` (0-31)
   * Set `byAdrMiddleGroup` (0-7)
   * Set `byAdrGroup` (0-255)
2. **Data reception**:
   * The block automatically receives data when it is sent to the configured group address.
   * The received data are stored in the `abyDaten` array.
3. **Data processing**:
   * The received data in the `abyDaten` array can be further processed as needed.
   * Since no DPT conversion takes place, you must interpret the data yourself.

InOut:

| Scope       | Name                      | Type                   | Initial | Comment                                                                                            | Inherited from |
| ----------- | ------------------------- | ---------------------- | ------- | -------------------------------------------------------------------------------------------------- | -------------- |
| Input       | `itfKnxConnector`         | `IKnxConnector`        |         | <p>IMasterConnector interface input to register/unregister<br>the FB to the List on the Master</p> | SlaveBasic     |
| Input       | `xEnable`                 | `BOOL`                 | TRUE    |                                                                                                    | SlaveBasic     |
| Output      | `sPhysicallAddressDevice` | `STRING(15)`           |         |                                                                                                    | SlaveBasic     |
| Output      | `sGroupAddress`           | `STRING(15)`           |         |                                                                                                    | SlaveBasic     |
| Input Const | `byAdrGroup`              | `BYTE`                 | 0       | Group address                                                                                      |                |
| Input Const | `byAdrMiddleGroup`        | `BYTE`                 | 0       | Middle-Group-Address                                                                               |                |
| Input Const | `byAdrMainGroup`          | `BYTE`                 | 0       | Main-Group-Adress                                                                                  |                |
| Output      | `abyDaten`                | ARRAY \[0..38] OF BYTE |         |                                                                                                    |                |


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