> 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 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 Alarming Library](https://support.powerio.com/hub/downloads/en/codesys-hvac-downloads/hvac-alarming-library.md): Download and changelog page for the HVAC Alarming Library. Each version lists the release date, changes, SBOM, signing, and library hash. - [HVAC Alarm Mail 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 by asking a question. Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters: ``` 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 what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `automate deployments from our CI pipeline` lets GitBook tailor the answer to that use case. 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.