> 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-macro.md).

# Project template - Macro

### Documentation

<a href="/spaces/6G4WDUYxjH3a0to8hJov/pages/6606a6133245a188c862dee2422dd868569c4dde" 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-Macroproject-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**

* Template optimized and adapted for CODESYS version ≥ 3.5.21.2

</details>

***

### Older versions

<details>

<summary>2.1.1.6 - CODESYS 3.5.17.2 - <a href="https://dl.powerio.com/downloads/HVAC-Macroproject-powerIO-(CDS3.5.17.2_A)-2.1.1.1.projectarchive">Download</a></summary>

**New features and changes**

* Lib HVAC to 3.2.1.14
* Lib HVACV to 3.2.0.18
* Lib HVACModbus to 1.1.0.38
* Lib HVACModbusIO2 to 1.0.2.6
* master Clock send and receive: missing variable ActivClocksVisu added
* FB CPU\_Station: pulse added when communication is OK again
* GLT\_Programm: send pulse added after a station is reconnected for sending the NVL\_GLT
* Clocks send: variable Weekclock\_1CHx\_Mode added
* Clocks send: variable ActivClocksVisu added
* Program and task Alarmmessage deleted. No longer needed due to newer version of alarm email sending
* Crossflow heat exchanger: minimum pressure and linkage with xOpTCon for xFrost added
* Heat wheel: minimum pressure and linkage with xOpTCon for xFrost added
* FanExtensionA: ControlPI replaced with ControlPIext
* for master station GLT
  * Main: Clocks send page added
  * Send list NVL\_GLT added
* for all FBs with day/night operation, additional operating mode Off added, with note 'no frost monitoring'
* Heating circuit designation/assignment added in the zones
* RLT03: messages added to alarm list FanSUPx.xAlarmMSS and FanETAx.xAlarmMSS
* TypA\_HZK: Pump: xForceOption changed to false
* TypA\_HZK\_MOD: Pump: xForceOption changed to false
* TypC\_RLT: ControlPI\_Dehum added for dehumidification
* FreieNachtkuehlung and FNK\_mit\_Zonen: TOF added after xClockchannel. If two clocks are used and at 23:59 rMaxOsTemp is not reset immediately.
* Rename AT average dropdown
* Outside Temperature: Man added for average temperatures
* TypB\_RLT: Edit\_TempCoolOut: values adjusted
* FanExtensionA: Hysteresis for writing YMin and YMax added
* TypB\_RLT and TypC\_RLT: minimum offset between setpoint temperature heating mode and cooling mode added
* KaeltemaschineT: FB Burner replaced by FB DeviceSimple2 and DeviceSimpleA
* FB ClockSlave32 renewed in all FBs and clocks assigned
* PI controller edit buttons added in the macros

</details>

<details>

<summary>2.1.1.1 - CODESYS 3.5.17.2 - <a href="https://dl.powerio.com/downloads/HVAC-Macroproject-powerIO-(CDS3.5.17.2_A)-2.1.1.1.projectarchive">Download</a></summary>

**New features and changes**

* Text 'Station XY' replaced with 'Station new' (sStationsname)
* Text list 'TL\_eTAU\_Durchschnitt' renewed
* \- TypA\_HZK - TypA\_Frame\_Einstellungen\_HZK: combobox renewed - input xValveAlarm added (also in alarm list - heat meter removed
* \- TypB\_HZK: TypB\_Frame\_Einstellungen\_HZK: combobox renewed

</details>

<details>

<summary>2.1.0.0 - CODESYS 3.5.14.0 - <a href="https://dl.powerio.com/downloads/HVAC-Macroproject-powerIO-(CDS3.5.14.0)-2.1.0.0.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>


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