# Project template - Start empty

### Documentation

<a href="/spaces/6G4WDUYxjH3a0to8hJov/pages/b3004f62016969bb436b14be5f14d1c7118505fc" class="button secondary" data-icon="books">To the documentation</a>

### Current version

<details>

<summary>2.2.0.1 - CODESYS 3.5.21.2 - <a href="https://dl.powerio.com/downloads/Startprojekt-LEER-powerIO-(CDS3.5.21.2_A)-2.2.0.1.projectarchive" class="button primary" data-icon="arrow-down-to-line">Download</a></summary>

Release date 19.01.2026

**New features and changes**

* Various changes and adjustments
* Template optimized and adapted for CODESYS version ≥ 3.5.21.2

</details>

***

### Older versions

<details>

<summary>2.1.0.5 - CODESYS 3.5.17.2 - <a href="https://dl.powerio.com/downloads/Startprojekt%20LEER%20powerIO(CDS%203.5.17.2_A)%202.1.0.5.projectarchive">Download</a></summary>

**New features and changes**

* Various changes and adjustments - as well as latest libraries

</details>

<details>

<summary>2.0.1.0 - CODESYS 3.5.17.2 - <a href="https://dl.powerio.com/downloads/HVAC-Startprojekt-LEER-powerIO-(CDS3.5.17.2_A)-2.0.1.0.projectarchive">Download</a></summary>

**New features and changes**

* Updated to CODESYS version 3.5.17.2
* Modbus IO Visu page was added under the menu item "SERVICE".

</details>

<details>

<summary>2.0.0.2 - CODESYS 3.5.14.0 - <a href="https://dl.powerio.com/downloads/HVAC-Startprojekt-LEER-powerIO-(CDS3.5.14.0)-2.0.0.2.projectarchive">Download</a></summary>

**New features and changes**

* Base project for CODESYS 3.5.14.0

</details>


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# 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/en/codesys-hvac-templates/template-start.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.