Limit alarm¶

BrowseName: LimitAlarmController
SuperType: Alarm controller (AlarmController)

Monitors when the values of interest are reached for variables relating to physical quantities. Activates when the value of the monitored variable reaches one or more limits of interest. When several limits of interest are reached consecutively, the alarm signals only the last limit reached (exclusive) or all the limits reached (non-exclusive).

Properties¶

Name	BrowseName	DataType	Description
High-high limit	HighHighLimit	Double	High-high limit value
High limit	HighLimit	Double	High limit value
Low limit	LowLimit	Double	Low limit value
Low-low limit	LowLowLimit	Double	Low-low limit value
Enabled	Enabled	Boolean	Enable/disable the alarm. (Inherited from Alarm controller)
Auto acknowledge	AutoAcknowledge	Boolean	True: when the alarm activates, it is automatically acknowledged and confirmed. False: when the alarm activates, it must be acknowledged by the user. (Inherited from Alarm controller)
Auto confirm	AutoConfirm	Boolean	True: when the alarm activates, it is automatically confirmed by the application. False: when the alarm activates, it must be confirmed by the user. (Inherited from Alarm controller)
Input variable	InputValue	Double	Variable to monitor (Inherited from Alarm controller)
Message	Message	LocalizedText	Alarm message text (Inherited from Alarm controller)
Severity	Severity	UInt16	Level of severity of the alarm, which indicates its priority on a scale from 1 to 1000 (in compliance with the OPC UA standard: 1 = information, 1000 = serious error). (Inherited from Alarm controller)
Last event	LastEvent	BaseDataType	Last alarm event generated (Inherited from Alarm controller)