# Description

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So you can get started right away, we offer the library as a download. A license is not required for use. If you need further assistance, please do not hesitate to contact us.

<a href="https://app.gitbook.com/s/0iNqm20Eubny3McJVgbJ/codesys-hvac-downloads/hvac-modbus-i-o2-library" class="button primary" data-icon="up-right-from-square">To the download</a> <a href="https://shop.powerio.com/shop/category/hvac-automation-produkte-modbus-ios-7" class="button primary" data-icon="shop">To the online shop</a> <a href="https://www.powerio.com/de/kontakt" class="button secondary" data-icon="question">Get support</a>

### Overview

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<figure><img src="https://2592874069-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FQR4vCFzt6ixgsqlR3pdR%2Fuploads%2Fgit-blob-3ec4b8dc83aa781af37f4eaea48803cb445887f5%2FScreenshot%202025-11-18%20at%2013.05.46.png?alt=media" alt="" width="563"><figcaption></figcaption></figure>

<p align="center"><em>Function blocks optimized for practical use. Easy use of Modbus I/O modules with a master function block and a slave function block.</em></p>
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### Description

This product enables the integration of the HVAC I/O modules.

In addition to the I/O configuration, there is a parameter window for each module. Settings such as slave address, bus timeout, send commands or polling intervals can be made. I/O treatments such as negation, two-point function, limit value, and filter function can also be configured. For the analog input module, sensor types such as PT1000, Ni 1000, NTC 10k, etc. can be selected directly.

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### Details

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