> For the complete documentation index, see [llms.txt](https://docs.videc.de/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.videc.de/acron-9.3/en/anlagenkonfiguration/prozessanbindung/provider/providerid/variablengruppe.md).

# Variable group

The variable groups provide a more user-friendly structuring of the external variables. They can be broken down further into subgroups, which is particularly useful in enhancing the clarity of large-scale plant installations.

Variables can be moved within the groups by [drag & drop](/acron-9.3/en/erklaerung_zur_bedienung.md#drag-drop).

## Name <a href="#bezeichnung" id="bezeichnung"></a>

Name of the variable group

## External variable <a href="#extvar" id="extvar"></a>

External variables are the link between ACRON and the plant's control system/PLC. The Provider supplies them with the plant data. By specifying the configuration parameters, you can adapt the external variable to your specific needs. Variables can be moved within the groups by [drag & drop](/acron-9.3/en/erklaerung_zur_bedienung.md#drag-drop).

Note

No external variables can be created for alert interfaces. This area is covered by the alert variables. The purpose of generating alerts by external variables is to enable ACRON to generate alerts independent of the alert interface.

Note

External variables that are used (such as by process variables, Service) can only be deleted or disabled once the respective assignment has been canceled. Linking to an alert variable does not lock the external variable.


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