OpenAlarmList Function

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Opens a new alarm list.


Informal Syntax:

OpenAlarmList( TagName, TagIsFolder )

Formal Syntax:

OpenAlarmList( TagName:=Expression, TagIsFolder:=Expression )


Parameter Type Description
TagName ANY_STRING The full name of the tag or folder to open alarms for. An empty string will show all alarms in the tag database.
TagIsFolder BOOL Whether the TagName parameter refers to a tag (false) or folder (true).

Return Value



The OpenAlarmList function displays the alarm list in the form of a table. The exact behavior varies according to the context:

A program or script will not execute any statements after the OpenAlarmList call.


  1. Display all alarms in the tag database:
    OpenAlarmList( "", TRUE );
  2. Display all alarms int he folder called 'Tank Control':
    OpenAlarmList( "Tank Control", TRUE );

Further Information

Operator Actions

To learn where you can use this function.

Structured Text Function Call

To learn about calling a function from IEC 61131-3 structured text.

IEC 61131-3 Expressions

To learn about the different types of expression to use as function parameters.


For the meaning of terms used in Fernhill SCADA.