Common Alarm Tag

Help Contents

Introduction

A tag which contains 1 or more Alarms. An alarm is an abnormal condition usually requiring manual intervention to correct. For more information see Alarm Handling.

Configuration Properties

The Alarm Tag supports the configuration properties of the Core Tag plus these properties:

Property Type Version Description
AlarmGraphic Reference 3.0 A reference to a Graphic Page Tag.
DelayIntoAlarm TIME 4.5 The delay into an alarm state. The alarm condition must be active for this duration before the alarm is raised. If DelayIntoAlarm is T#0s, the alarm will be raised immediately the alarm condition is present.
DelayOutOfAlarm TIME 4.5 The delay out of an alarm state. The alarm condition must not be active for this duration before the alarm is cleared. If DelayIntoAlarm is T#0s, the alarm will be cleared immediately the condition is not present.

Data Properties

The Alarm Tag supports the data properties of the Core Tag. No additional data properties are defined by the Alarm Tag.

Tag Commands

The Alarm Tag supports these tag commands:

Tag Command Version Description
AcknowledgeAlarms 1.5 Acknowledges any alarm associated with the Alarm Tag.
DisableAlarms 1.5 Disables alarms associated with the Alarm Tag.
EnableAlarms 1.5 Enables alarms associated with the Alarm Tag.

Relationships to Other Tag Types

The Alarm Tag builds on the features of these tag types:

The Alarm Tag is used as a building block for these tag types:

Further Information

Alarm Handling

To learn about how alarms are processed in Fernhill SCADA.

Operator Interface Alarm List

To learn about how alarms shown in the Operator Interface.

Glossary

For the meaning of terms used in Fernhill SCADA.