> 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.md).

# Process connection

The process connection function is used to configure the import of external data into ACRON. A process connection is defined and executed by a [Provider](/acron-9.3/en/anlagenkonfiguration/prozessanbindung/provider.md) with the corresponding communications driver. The [manual values](/acron-9.3/en/anlagenkonfiguration/verfahrensgroessen/handgroesse.md) are an exception in this. They are not delivered by a control system/PLC, but must be entered manually.

## Group with [Variables for manual variables](/acron-9.3/en/anlagenkonfiguration/prozessanbindung/variablen-f-hg.md)

Group with external variables that do not receive their data from a control system/PLC, but rely on manual data input. This special group is created automatically by ACRON, and is assigned no Provider number (identification).

## [Provider](/acron-9.3/en/acron_der_anlagenchronist/acron_provider.md) for online data

Provider for external variables that receive their data directly from a control system/PLC.

The data transfer type may be event-controlled or cyclically recording.

## [Provider](/acron-9.3/en/acron_der_anlagenchronist/acron_provider.md) for history data

Provider capable of using interfaces to import historical measurement data from the process.

The data transfer type may be event-controlled or cyclically recording.

## [Provider](/acron-9.3/en/acron_der_anlagenchronist/acron_provider.md) for alert recording

Providers only for alert recording contain no variables.

#### *Step 1* in the process connection is to configure a Provider:

* Create Provider
* [Name](/acron-9.3/en/anlagenkonfiguration/prozessanbindung/provider/providerid.md) of the Provider
* Select a [driver](/acron-9.3/en/anlagenkonfiguration/prozessanbindung/provider/providerid/treiberauswahl.md)
* Configure the various parameters, depending on the [Driver selection](/acron-9.3/en/anlagenkonfiguration/prozessanbindung/provider/providerid/treiberauswahl.md)
* Configure the general Provider settings, such as the measure interval or a start delay for data logging.

  Note

  For automated import of external data, ACRON uses different, mutually independent interface types. A distinction is made between a total of four Provider types.

#### *Step 2* in the process connection is to create the [External variables / Variables without provider](/acron-9.3/en/anlagenkonfiguration/prozessanbindung/provider/providerid/variablengruppe.md#extvar)


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