This is a subtype of AlarmGroupType that can be used to suppress other alarms. This subtype of AlarmGroup extends the AlarmGroupType to allow the addition of Variables that have a Boolean DataType. The Variable can be thought of as representing the Id of the ActiveState of an Alarm, i.e. when any of the included Variables have a value of true the AlarmSuppressionGroup is 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 AlarmSuppressionGroupType should be given a name and description that describes the purpose of the Alarm group.

The AlarmSuppressionGroupType instance will contain a list of instances of AlarmConditionType or sub type of AlarmConditionType or BaseDataVaribleType with a DataType of Boolean referenced by AlarmSuppressionGroupMember references. At least one Node must be present in an instance of an AlarmGroupType.