AnalogDevice object Alarms tab

Generate event upon PV change

PV.LogDataChangeEvent

If enabled, data change events for the PV will be logged to event history.

Supervisory, User

Detect PV level (limit) alarms

PV.LevelAlarmed

If enabled, alarms will be triggered for when the PV level reaches configured limits.

None

HiHi

HiHi.Alarmed

If enabled, an alarm will be triggered when the PV reaches the HiHi limit.

None

HiHi - Limit

HiHi.Limit

The HiHi limit that the PV must exceed to trigger an alarm.

Supervisory, User

HiHi - Priority

HiHi.Priority

See About alarm attributes.

Supervisory, User

HiHi - Alarm Message Attribute

HiHi.DescAttrName

See About alarm attributes. Click the ellipse button to access the Attribute Browser.

None

Hi

Hi.Alarmed

If enabled, an alarm will be triggered when the PV reaches the Hi limit.

None

Hi - Limit

Hi.Limit

The Hi limit that the PV must exceed before an alarm is triggered.

Supervisory, User

Hi - Priority

Hi.Priority

See About alarm attributes.

Supervisory, User

Hi - Alarm Message Attribute

Hi.DescAttrName

See About alarm attributes. Click the ellipse button to access the Attribute Browser.

None

Lo

Lo.Alarmed

If enabled, an alarm will be triggered when the PV reaches the Lo limit.

None

Lo - Limit

Lo.Limit

The Lo limit that the PV must exceed to trigger an alarm.

Supervisory, User

Lo - Priority

Lo.Priority

See About alarm attributes.

Supervisory, User

Lo - Alarm Message Attribute

Lo.DescAttrName

See About alarm attributes. Click the ellipse button to access the Attribute Browser.

None

LoLo

LoLo.Alarmed

If enabled, an alarm will be triggered when the PV reaches the LoLo limit.

None

LoLo - Limit

LoLo.Limit

The LoLo limit that the PV must exceed to trigger an alarm.

Supervisory, User

LoLo - Priority

LoLo.Priority

See About alarm attributes.

Supervisory, User

LoLo - Alarm Message Attribute

LoLo.DescAttrName

See About alarm attributes. Click the ellipse button to access the Attribute Browser.

None

Alarm deadband

LevelAlarm.ValueDeadband

The amount, in engineering units, that the PV must drop below either the HiHi limit or Hi limit, or increase above either the LoLo limit or Lo limit before an alarm is triggered.

Supervisory, User

Detect PV rate of change alarms

PV.ROCAlarmed

If enabled, alarms will be triggered for when the PV level reaches configured rates of change.

None

Up

PV.ROC.IncreasingHi.Alarmed

If enabled, an alarm will be triggered when the PV is increasing too fast.

None

Up - Limit

PV.ROC.IncreasingHi.Limit

The alarm limit that the rate of change calculation must exceed in order to trigger an alarm.

Supervisory, User

Up - Priority

PV.ROC.IncreasingHi.Priority

See About alarm attributes.

Supervisory, User

Up - Alarm Message Attribute

PV.ROC.IncreasingHi.DescAttrName

See About alarm attributes. Click the ellipse button to access the Attribute Browser.

None

Down

PV.ROC.DecreasingHi.Alarmed

If enabled, an alarm will be triggered when the PV is decreasing too fast.

None

Down - Limit

PV.ROC.DecreasingHi.Limit

The alarm limit that the rate of change calculation must exceed in order to trigger an alarm. (This value, although a positive value, actually indicates a negative rate of change, or a descending rate of change Hi limit.)

Supervisory, User

Down - Priority

PV.ROC.DecreasingHi.Priority

See About alarm attributes.

Supervisory, User

Down - Alarm Message Attribute

PV.ROC.DecreasingHi.DescAttrName

See About alarm attributes. Click the ellipse button to access the Attribute Browser.

None

Per

PV.ROC.Rate.Units

The units of time for the rate of change calculation.

Read-Only

Evaluate every

PV.ROC.EvalPeriod

The time interval, in milliseconds, at which the rate of change calculation and detection is performed.

Supervisory, User

Detect PV target deviation alarms

PV.DevAlarmed

If enabled, alarms will be triggered for when the PV level deviates from a target value by a configured amount.

None

Minor

PV.Dev.Minor.Alarmed

If enabled, an alarm will be triggered when the PV reaches the minor deviation tolerance.

None

Minor - Deviation

PV.Dev.Minor.Tolerance

The amount, in engineering units, that the PV must differ from the setpoint before an alarm will be triggered.

Supervisory, User

Minor - Priority

PV.Dev.Minor.Priority

See About alarm attributes.

Supervisory, User

Minor - Alarm Message Attribute

PV.Dev.Minor.DescAttrName

See About alarm attributes. Click the ellipse button to access the Attribute Browser.

None

Major

PV.Dev.Major.Alarmed

If enabled, an alarm will be triggered when the PV reaches the major deviation tolerance.

None

Major - Deviation

PV.Dev.Major.Tolerance

The amount, in engineering units, that the PV must differ from the setpoint before an alarm will be triggered.

Supervisory, User

Major - Priority

PV.Dev.Major.Priority

See About alarm attributes.

Supervisory, User

Major - Alarm Message Attribute

PV.Dev.Major.DescAttrName

See About alarm attributes. Click the ellipse button to access the Attribute Browser.

None

Setpoint

SP

The target value. The setpoint is only available for AnalogDevice objects configured as type AnalogRegulator (not Analog).

Supervisory, User

Deviation deadband

PV.Dev.Deadband

The amount the PV must drop (measured in engineering units) below any of the deviation limits before the respective condition is set to FALSE.

Supervisory, User

Settling period

PV.Dev.SettlingPeriod

The amount of time, in seconds, allowed for the PV to return within the normal range after the deviation alarm clears. (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

Bad PV

PV.Bad.Alarmed

If enabled, alarms will be triggered for when the PV has bad data values or data quality.

None

Bad PV priority

PV.Bad.Priority

See About alarm attributes.

Supervisory, User

Alarm Message Attribute

PV.Bad.DescAttrName

See About alarm attributes. Click the ellipse button to access the Attribute Browser.

None