This is a subtype of AlarmGroupTypethat can be used to supress other alarms. This subtype of AlarmGroupextends the AlarmGroupTypeto allow the addition of Variablesthat have a Boolean DataType. The Variablecan be thought of as representing the Idof the ActiveStateof an Alarm, i.e. when any of the included Variableshave a value of true the AlarmSuppressionGroupis active.

Table 45– AlarmSuppressionGroupType definition

Attribute

Value

BrowseName

AlarmSuppressionGroupType

IsAbstract

False

References

NodeClass

BrowseName

DataType

TypeDefinition

ModellingRule

Subtype of the AlarmGroupType

AlarmSuppressionGroupMember

Variable

<DigitalVariable>

Boolean

BaseDataVariableType

OptionalPlaceholder

ConformanceUnits

A & C Suppression Group

The instance of an AlarmSuppressionGroupTypeshould be given a name and description that describes the purpose of the Alarmgroup.

The AlarmSuppressionGroupTypeinstance will contain a list of instances of AlarmConditionTypeor sub type of AlarmConditionTypeor BaseDataVaribleTypewith a DataTypeof Booleanreferenced by AlarmSuppressionGroupMemberreferences. At least one Nodemust be present in an instance of an AlarmGroupType.