# HVAC KNX Library

{% columns %}
{% column width="25%" %}

<figure><img src="/spaces/QR4vCFzt6ixgsqlR3pdR/files/Njd2sPM1ZpWi6Cx1r4UQ" alt="" width="100"><figcaption></figcaption></figure>
{% endcolumn %}

{% column width="75%" %}
Die HVAC KNX Library ermöglicht es, KNX IP-Daten direkt aus dem Programm über KNX IP-Interfaces via UDP abzurufen. Hierzu wird der Master Funktionsbaustein platziert und die einzelnen Gruppenadressen Funktionsbausteine mit dem Master verknüpft.
{% endcolumn %}
{% endcolumns %}

### Dokumentation

> Alle wichtigen Informationen zu dieser Bibliothek, einschließlich Lizenz und vollständiger Dokumentation, finden Sie im Dokumentationsbereich.

<a href="/spaces/QR4vCFzt6ixgsqlR3pdR/pages/pj8QZH4DLs19hwWSAbMg" class="button secondary" data-icon="books">Zur Dokumentation</a>

### Aktuelle Version

<details>

<summary>1.2.3.5 - HVACKNX - <a href="https://dl.powerio.com/downloads/powerIO-CODESYS-HVACKNX-1.2.3.5.compiled-library-v3" class="button primary" data-icon="arrow-down-to-line">Download</a></summary>

Release Date 17.01.2026

**Neue Funktionen und Änderungen**

* Allgemeine Verbesserung

***

*Technische Details und Sicherheit zum Download*

<table data-header-hidden><thead><tr><th width="292.62353515625"></th><th></th></tr></thead><tbody><tr><td><i class="fa-file-contract">:file-contract:</i> SBOM (Software Bill of Materials)</td><td><a href="https://dl.powerio.com/downloads/8c1463b5-02f2-427d-bd06-9e39d42fcbff-1.2.3.5-6756b4358d52.spdx.json">Link zur SBOM (spdx)</a></td></tr><tr><td><i class="fa-certificate">:certificate:</i> Signierung</td><td>Ja (mehr Infos)</td></tr><tr><td><i class="fa-abacus">:abacus:</i> Signierter Library Hash</td><td><code>6756b4358d52</code></td></tr></tbody></table>

</details>

***

### Ältere Versionen

<details>

<summary>1.2.3.3 - HVACKNX - <a href="https://dl.powerio.com/downloads/powerIO-CODESYS-HVACKNX-1.2.3.3.compiled-library-v3">Download</a></summary>

Release Date 21.11.2025

**Neue Funktionen und Änderungen**

* Allgemeine Verbesserung

***

*Technische Details und Sicherheit zum Download*

<table data-header-hidden><thead><tr><th width="292.62353515625"></th><th></th></tr></thead><tbody><tr><td><i class="fa-file-contract">:file-contract:</i> SBOM (Software Bill of Materials)</td><td><a href="https://dl.powerio.com/downloads/8c1463b5-02f2-427d-bd06-9e39d42fcbff-1.2.3.3-b79c15aa54a2.spdx.json">Link zur SBOM (spdx)</a></td></tr><tr><td><i class="fa-certificate">:certificate:</i> Signierung</td><td>Ja (mehr Infos)</td></tr><tr><td><i class="fa-abacus">:abacus:</i> Signierter Library Hash</td><td><code>b79c15aa54a2</code></td></tr></tbody></table>

</details>

<details>

<summary>1.2.3.2 - HVACKNX - <a href="https://dl.powerio.com/downloads/powerIO-CODESYS-3.5.17.2-HVACKNX-1.2.3.2.compiled-library">Download</a></summary>

Release Date 09.09.2025

**Fehlerbehebungen**

* DPD Fix Write-Telegram

</details>

<details>

<summary>1.2.3.0 - HVACKNX  - <a href="https://dl.powerio.com/downloads/powerIO-CODESYS-3.5.17.2-HVACKNX-1.2.3.0.compiled-library">Download</a></summary>

Release Date 08.07.2025

**Fehlerbehebungen**

* Bug Fix Initialisierung
* Anpassung Write-Telegramm
* Optimierung Reihenfolge Write

</details>

<details>

<summary>1.2.1.0 - HVACKNX - <a href="https://dl.powerio.com/downloads/powerIO-CODESYS-3.5.17.2-HVACKNX-1.2.1.0.compiled-library">Download</a></summary>

Release Date 14.03.2024

**Fehlerbehebungen**

* Performance Optimierung

</details>

<details>

<summary>1.2.0.0 - HVACKNX  - <a href="https://dl.powerio.com/downloads/powerIO-CODESYS-3.5.17.2-HVACKNX-1.2.0.0.compiled-library">Download</a></summary>

Release Date 12.07.2023

**Neue Funktionen und Änderungen**

* Neue Read Bausteine

</details>

### Demoprojekt

HVAC KNX Demo Projekt - [Download](https://dl.powerio.com/downloads/HVAC-KNX-Library-Demoproject.project)

### Details

| **Dokumentation Version**      | <code class="expression">space.vars.HVACKNX\_Library\_latest</code> |
| ------------------------------ | ------------------------------------------------------------------- |
| **Platzhalter**                | `HVACKNX`                                                           |
| **Verfügbar in CODESYS Store** | *Ja*                                                                |
| **Programmiersystem**          | *CODESYS V3.5.17.2 oder höher*                                      |
| **Laufzeitsystem**             | *CODESYS Control V4.2.0.0 oder höher*                               |
| **Lizenzierung**               | *Single License (Einzelgerätelizenz)*                               |
| **Lizenz**                     | [HVAC KNX SL](https://store.codesys.com/de/hvac-knx-sl.html)        |


---

# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://support.powerio.com/hub/downloads/codesys-hvac-downloads/hvac-knx-library.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.