IfcRelFlowControlElements

Semantic definitions at the entity

Entity definition

This objectified relationship between a distribution flow element occurrence and one-to-many control element occurrences indicates that the control element(s) sense or control some aspect of the flow element. It is applied to IfcDistributionFlowElement and IfcDistributionControlElement.

This relationship may be used to indicate an operational relationship such as an actuator operating a valve, damper, or switch. It may also be used to indicate a sensing relationship such as a sensor detecting conditions of fluid flow.

This relationship implies a sensing or controlling relationship; if elements are merely connected without any control relationship, then IfcRelConnectsElements should be used.

HISTORY New entity in IFC2x.

Attribute definitions

#	Attribute	Type	Cardinality	Description	G
5	RelatedControlElements	IfcDistributionControlElement	S[1:?]	References control elements which may be used to impart control on the Distribution Element.	X
6	RelatingFlowElement	IfcDistributionFlowElement		Relationship to a distribution flow element	X

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	G
IfcRoot
1	GlobalId	IfcGloballyUniqueId		Assignment of a globally unique identifier within the entire software world.	X
2	OwnerHistory	IfcOwnerHistory	?	Assignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object, NOTE only the last modification in stored - either as addition, deletion or modification. IFC4 CHANGE The attribute has been changed to be OPTIONAL.	X
3	Name	IfcLabel	?	Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule.	X
4	Description	IfcText	?	Optional description, provided for exchanging informative comments.	X
IfcRelationship
IfcRelConnects
IfcRelFlowControlElements
5	RelatedControlElements	IfcDistributionControlElement	S[1:?]	References control elements which may be used to impart control on the Distribution Element.	X
6	RelatingFlowElement	IfcDistributionFlowElement		Relationship to a distribution flow element	X

#	Concept	Template	Model View
IfcRoot
	Identity	Software Identity	General Usage
	Revision Control	Revision Control	General Usage

Formal representations

XML Specification

 <xs:element name="IfcRelFlowControlElements" type="ifc:IfcRelFlowControlElements" substitutionGroup="ifc:IfcRelConnects" nillable="true"/>

 <xs:complexType name="IfcRelFlowControlElements">

  <xs:complexContent>

   <xs:extension base="ifc:IfcRelConnects">

    <xs:sequence>

     <xs:element name="RelatedControlElements">

      <xs:complexType>

       <xs:sequence>

        <xs:element ref="ifc:IfcDistributionControlElement" maxOccurs="unbounded"/>

       </xs:sequence>

       <xs:attribute ref="ifc:itemType" fixed="ifc:IfcDistributionControlElement"/>

       <xs:attribute ref="ifc:cType" fixed="set"/>

       <xs:attribute ref="ifc:arraySize" use="optional"/>

      </xs:complexType>

     </xs:element>

     <xs:element name="RelatingFlowElement" type="ifc:IfcDistributionFlowElement" nillable="true"/>

    </xs:sequence>

   </xs:extension>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcRelFlowControlElements

 SUBTYPE OF (IfcRelConnects);

  RelatedControlElements : SET [1:?] OF IfcDistributionControlElement;

  RelatingFlowElement : IfcDistributionFlowElement;

END_ENTITY;

 EXPRESS-G diagram

Item	Change	Description
IFC2x3 to IFC4
IfcRelFlowControlElements
OwnerHistory	MODIFIED	Instantiation changed to OPTIONAL.

	Verbindet Steuer- / Regeltechnik mit Komponente - Relation
	Rel Flow Control Elements

IfcRelFlowControlElements

Semantic definitions at the entity

Inherited definitions from supertypes

Definitions applying to General Usage

Formal representations