Introduction
If you have configured an alarm system for plant objects you can display the hierarchy path of the alarm source and the alarm status of a line or a machine in runtime, filter the alarm control by plant objects and navigate to the alarm source.
You can also filter the most frequently occurring alarms by plant object and only permit the alarm of the respective object and all lower-level objects to be displayed.
An alarm is linked to the respective plant object type. If you delete the plant object type the alarm will also be deleted.
Requirement
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A plant object type with associated external or internal data members (with elementary data types) has been created.
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The plant structure has been assigned to a device.
Procedure
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Select the respective data member of the plant object type on the basis of which you want to configure an alarm.
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To create a new discrete alarm, double-click on "<Add>" under "Discrete alarms" in the table.
A new discrete alarm is created.
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Assign a name for the alarm.
Note
The name of a discrete alarm can contain up to 128 characters.
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To configure the alarm, select "Properties > General" in the Inspector window:
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Enter the alarm text.
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Change the name of the alarm as required.
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Select the alarm class.
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Configure the priority of the alarm (a value of between "0" and "16").
Note
The alarm text must be unique in the context of the plant object type. Hierarchical information is not permitted in the alarm text.
Note
You can use the priority to sort or filter the alarms in the alarm control. With sorting by priority, you can ensure that the most important alarm (high priority) is shown in the display area in a single-line alarm control.
If you filter the alarm control by priority "16", only the alarms with priority "16" will appear.
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Select "Properties > Trigger" in the Inspector window to select the tag and the bit that triggers the alarm.
Note
Only the data member of the plant object type is permitted as trigger tag.
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Select "Trigger mode" to specify whether to trigger the alarm at a rising or falling edge.
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To configure the alarm text, select "Properties > General > Alarm text".