> 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-downloads.md). # 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 HVACV visualization - [HVAC Modbus Library](https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads/hvac-modbus-library.md): Download and changelog page for the HVACModbus Library - [HVAC KNX Library](https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads/hvac-knx-library.md): Download and changelog page for the HVACKNX Library - [HVAC BACnet2 Library](https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads/hvac-bacnet-library.md): Download and changelog page for the HVACBACnet2 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 HVACModbusIO 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 HVACModbusIO2 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 This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## 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, and the optional `goal` query parameter: ``` GET https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. 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.