# HVAC Libraries - [HVAC Library](https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads/hvac-library.md): Download and changelog page for the HVAC Library - [HVAC Visualization Library](https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads/hvac-visu-library.md): Download and changelog page for the HVAC visualization - [HVAC Modbus Library](https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads/hvac-modbus-library.md): Download and changelog page for the HVAC Modbus Library - [HVAC KNX Library](https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads/hvac-knx-library.md): Download and changelog page for the HVAC KNX Library - [HVAC BACnet2 Library](https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads/hvac-bacnet-library.md): Download and changelog page for the HVAC BACnet2 Library - [HVAC ModbusIO Library](https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads/hvac-modbus-i-o-library.md): Download and changelog page for the HVAC ModbusIO Library - [HVAC ModbusIO2 Library](https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads/hvac-modbus-i-o2-library.md): Download and changelog page for the HVAC ModbusIO2 Library - [HVAC Alarm Library](https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads/hvacfam-alarm-email-library.md): Download and changelog page for the HVACFAM Alarm Email Library - [POWERIOHW Hardware Library](https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads/poweriohw-hardware-library.md): Download and changelog page for the POWERIOHW Hardware Library - [POWERIOJSON JSON Library](https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads/poweriojson-library.md): Download and changelog page for the POWERIOJSON JSON Library - [HVAC CSV Library](https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads/hvaccsv-simple-log-library.md): Download and changelog page for the HVACCSV Simple Log Library - [MySQL Library](https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads/mysql-library.md): Download and changelog page for the MySQL Library --- # 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-downloads.md?ask= ``` 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.