7.2.3.4 IfcAlarmType

Alarme type
Alarm / Gefahrenmelder - Typ

The distribution control element type IfcAlarmType defines commonly shared information for occurrences of alarms. The set of shared information may include:

It is used to define a alarm type specification indicating the specific product information that is common to all occurrences of that product type. The IfcAlarmType may be declared within IfcProject or IfcProjectLibrary using IfcRelDeclares and may be exchanged with or without occurrences of the type. Occurrences of IfcAlarmType are represented by instances of IfcAlarm. Refer to the documentation at IfcAlarm for supported property sets, materials, composition, and ports.

HISTORY  New entity in IFC2x2

XSD Specification:

 <xs:element name="IfcAlarmType" type="ifc:IfcAlarmType" substitutionGroup="ifc:IfcDistributionControlElementType" nillable="true"/>
 <xs:complexType name="IfcAlarmType">
  <xs:complexContent>
   <xs:extension base="ifc:IfcDistributionControlElementType">
    <xs:attribute name="PredefinedType" type="ifc:IfcAlarmTypeEnum" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>

EXPRESS Specification:

ENTITY IfcAlarmType
SUBTYPE OF IfcDistributionControlElementType;
PredefinedType : IfcAlarmTypeEnum;
WHERE
CorrectPredefinedType : (PredefinedType <> IfcAlarmTypeEnum.USERDEFINED) OR ((PredefinedType = IfcAlarmTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcElementType.ElementType));
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

Attribute Definitions:

PredefinedType :

Identifies the predefined types of alarm from which the type required may be set.

Inheritance Graph:

ENTITY IfcAlarmType
ENTITY IfcRoot
GlobalId : IfcGloballyUniqueId;
OwnerHistory : OPTIONAL IfcOwnerHistory;
Name : OPTIONAL IfcLabel;
Description : OPTIONAL IfcText;
ENTITY IfcObjectDefinition
INVERSE
HasAssignments : SET OF IfcRelAssigns FOR RelatedObjects;
Nests : SET [0:1] OF IfcRelNests FOR RelatedObjects;
IsNestedBy : SET OF IfcRelNests FOR RelatingObject;
HasContext : SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions;
IsDecomposedBy : SET OF IfcRelAggregates FOR RelatingObject;
Decomposes : SET [0:1] OF IfcRelAggregates FOR RelatedObjects;
HasAssociations : SET OF IfcRelAssociates FOR RelatedObjects;
ENTITY IfcTypeObject
ApplicableOccurrence : OPTIONAL IfcIdentifier;
HasPropertySets : OPTIONAL SET [1:?] OF IfcPropertySetDefinition;
INVERSE
Types : SET [0:1] OF IfcRelDefinesByType FOR RelatingType;
ENTITY IfcTypeProduct
RepresentationMaps : OPTIONAL LIST [1:?] OF UNIQUE IfcRepresentationMap;
Tag : OPTIONAL IfcLabel;
INVERSE
ReferencedBy : SET OF IfcRelAssignsToProduct FOR RelatingProduct;
ENTITY IfcElementType
ElementType : OPTIONAL IfcLabel;
ENTITY IfcDistributionElementType
ENTITY IfcDistributionControlElementType
ENTITY IfcAlarmType
PredefinedType : IfcAlarmTypeEnum;
END_ENTITY;

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