# Description

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To help you get started right away, we offer the library as a download. A license can be purchased via the CODESYS Store. If you need further support, please do not hesitate to contact us.

<a href="/spaces/ltcbXgy6Y2teLoU01eGk/pages/2de568655616943d978126800c761d884d12f130" class="button primary" data-icon="up-right-from-square">Download</a> <a href="https://store.codesys.com/de/hvac-building-process-automation-sl.html" class="button secondary" data-icon="seal">Purchase license</a> <a href="https://www.powerio.com/de/kontakt" class="button secondary" data-icon="question">Get support</a>

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### Overview

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<div align="left"><figure><img src="/files/3ec6ecb0db8fc6e35dc0233bada08022bb30cf8d" alt="" width="263"><figcaption></figcaption></figure></div>

*Use visualization elements for Modbus devices.*
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<figure><img src="/files/d8fa167d7366d1c6a6a64c8727dc3518b0d0e63e" alt=""><figcaption></figcaption></figure>

*Simple engineering by placing a master block for communication.*
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<figure><img src="/files/59c3c6671842fe24df22b210afefd12cf103b58d" alt="" width="281"><figcaption></figcaption></figure>

*Modbus client with TCP support.*
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<figure><img src="/files/47bc9b1a3eacf63384b3588c925d93ff88fcafe2" alt=""><figcaption></figcaption></figure>

*Modbus client with serial support for Modbus RTU.*
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### Description

The library is optimized for use with the CFC editor. Slave devices are connected via a master block (serial or TCP). Slave devices can be individual Modbus queries or fully finished device blocks from many manufacturers. This simplifies commissioning.

{% hint style="success" %}
**Is a device missing in the HVAC Modbus Library?**

If you need a device that is not yet included in the HVAC Modbus Library, just contact us. After a brief internal coordination, we will be happy to expand the library for you and provide you with the corresponding device as quickly as possible.
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### Details

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