IEC 61131-3 Scripts

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Using Fernhill SCADA, you can configure a SCADA system without any requirement to write scripts or code. For example the Configuration Tool allows you to do all of these actions without requiring you to write scripts or code:

However you may want to extend Fernhill SCADA beyond its core features. You can use IEC 61131-3 Structured Text (ST) to do this.

Areas where IEC 61131-3 Structured Text (ST) is used to to extend Fernhill SCADA include:

Authoring Structured Text

You can create structured text programs using:

Further Information


To learn about the expressions that can be used in calculated tags.


To learn about declaring Programs.


For the meaning of terms used in Fernhill SCADA.