> For the complete documentation index, see [llms.txt](https://support.powerio.com/hub/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.powerio.com/hub/downloads/en/codesys-hvac-templates/template-start.md).

# Project template - Blank start

### 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 the 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
* The Modbus IO Visu page was added under 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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