Configure deviation alarms
- Last UpdatedJul 19, 2024
- 2 minute read
Select the Attribute you want to configure in the Attributes List, then click Deviation Alarms in the configuration pane to add the Deviation Alarms Feature to the Attribute. Use the following table to configure the Deviation Alarms feature.
|
Deviation Alarms Option |
Associated Attribute |
Description |
Runtime Access (Supervisory, User, Read- Only, None) |
|---|---|---|---|
|
Deviation alarms feature |
DeviationAlarmed |
If enabled, alarms will be triggered when the Attribute level deviates from a target value by a configured amount. |
None |
|
Minor |
Dev.Minor.Alarmed |
If enabled, an alarm will be triggered when the Attribute value reaches the minor deviation tolerance. |
None |
|
Minor - Tolerance |
Dev.Minor.Tolerance |
The minor deviation tolerance that the Attribute value must exceed to trigger an alarm. |
Supervisory, User |
|
Minor - Priority |
Dev.Minor.Priority |
The value for the urgency of the alarm. Valid values are 1 through 999, with 1 being the most urgent. |
Supervisory, User |
|
Minor - Alarm message |
Dev.Minor.DescAttrName |
The name of the attribute (within the same object) to be used as the alarm message. The attribute you specify must be of type String or InternationalizedString, with a maximum string length of 329 characters. If no attribute is specified, the Attribute description is used as the alarm message. Click the ellipse button to access the Attribute Browser. |
Supervisory, User |
|
Major |
Dev.Major.Alarmed |
If enabled, an alarm will be triggered when the Attribute value reaches the major deviation tolerance. |
None |
|
Major - Tolerance |
Dev.Major.Tolerance |
The major tolerance that the Attribute value must exceed to trigger an alarm. |
Supervisory, User |
|
Major - Priority |
Dev.Major.Priority |
The value for the urgency of the alarm. Valid values are 1 through 999, with 1 being the most urgent. |
Supervisory, User |
|
Major - Alarm message |
Dev.Major.DescAttrName |
The name of the attribute (within the same object) to be used as the alarm message. The attribute you specify must be of type String or InternationalizedString, with a maximum string length of 329 characters. If no attribute is specified, the Attribute description is used as the alarm message. Click the ellipse button to access the Attribute Browser. |
Supervisory, User |
|
Target |
Dev.Target |
Sets the Attribute target setpoint value for the deviation calculation. |
Supervisory, User |
|
Deviation deadband |
Dev.Deadband |
The amount the Attribute value must drop (measured in engineering units) below any of the deviation limits before the respective condition is set to FALSE. |
Supervisory, User |
|
Settling period |
Dev.SettlingPeriod |
The time, in seconds, allowed for the Attribute value to return within the allowable range after a Target change is made before the deviation alarm is triggered. (A deviation alarm cannot occur again until the alarm clears.) The value you specify will be converted to the following format: days hh:mm:ss.fffffff. |
Supervisory, User |