A tag to represent an abnormal condition associated with a Data Point Tag.
The Data Point Alarm Tag is a building block for:
The Data Point Alarm Tag supports the configuration properties of the Common Alarm Tag plus these properties:
| Property | Type | Version | Description |
|---|---|---|---|
| DelayIntoAlarm | TIME | 3.97 | 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 | 3.97 | 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. |
The Data Point Alarm Tag supports the data properties of the Common Alarm Tag. No additional data properties are defined by the Alarm Tag.
The Data Point Alarm Tag supports the tag commands of the Common Alarm Tag plus these tag commands:
| Tag Command | Version | Description |
|---|---|---|
| AlarmPropertyOverride | 4.0 | Overrides a property of the alarm. |
| AlarmPropertyRestore | 4.0 | Restores a property of the alarm back to its default value. |
The Alarm Tag builds on the features of these tag types:
The Alarm Tag is used as a building block for these tag types:
For the meaning of terms used in Fernhill SCADA.