> 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-testboard.md).

# Project template - Testboard

### Documentation

<a href="/spaces/6G4WDUYxjH3a0to8hJov/pages/de75f7b08cadd07b7679a8a4e5a315d3feee74ad" 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/HVAC-Testboard-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**

* HVACModbusIO2 Library Visu adapted
* powerIO Hardware Library for OnBoard IOs added. ATTENTION Firmware H1.M100 must be >3.5 to use the onboard IOs.
* Template optimized and adapted for CODESYS version ≥ 3.5.21.2

</details>

***

### Older versions

<details>

<summary>2.0.3.0 - CODESYS 3.5.17.2 - <a href="https://dl.powerio.com/downloads/HVAC-Testboard-powerIO-(CDS3.5.17.2_A)-2.0.2.0.projectarchive">Download</a></summary>

Release Date 23.09.2023

**New features and changes**

* HVACModbusIO2 Library Visu adapted
* powerIO Hardware Library for OnBoard IOs added. ATTENTION Firmware H1.M100 must be >3.5 to use the onboard IOs.

</details>

<details>

<summary>2.0.2.0 - CODESYS 3.5.17.2 - <a href="https://dl.powerio.com/downloads/HVAC-Testboard-powerIO-(CDS3.5.17.2_A)-2.0.2.0.projectarchive">Download</a></summary>

Release Date 18.09.2023

**New features and changes**

* Libraries updated
* HVACModbusIO2 Library and Visu adapted
* ControlPI Visu button and FB\_MacroInfo Visu button added

</details>

<details>

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

**New features and changes**

* Heating circuit example added in the test board project

</details>


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