IFC 4.3.x development

5.4.3.40 IfcRelConnectsPorts

Change log

5.4.3.40.1 Semantic definitions at the entity

An IfcRelConnectsPorts relationship defines the relationship that is made between two ports at their point of connection. It may include the connection geometry between two ports.

The objectified relationship IfcRelConnectsPorts is required for defining how two instances of IfcPort connect together. Each of the ports is logically contained within the IfcDistributionElement by using the ordered collection IfcRelNests.

HISTORY  New entity in IFC2.0, modified in IFC2x.

IFC4 CHANGE  Previously the containment of the IfcPort within the IfcDistributionElement had been realized using the IfcRelConnectsPortToElement relationship.

5.4.3.40.1 Attributes

#	Attribute	Type	Description
IfcRoot
1	GlobalId	IfcGloballyUniqueId	Assignment of a globally unique identifier within the entire software world.
2	OwnerHistory	OPTIONAL 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.
3	Name	OPTIONAL 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.
4	Description	OPTIONAL IfcText	Optional description, provided for exchanging informative comments.
IfcRelationship
IfcRelConnects
IfcRelConnectsPorts
5	RelatingPort	IfcPort	Reference to the first port that is connected by the objectified relationship.
6	RelatedPort	IfcPort	Reference to the second port that is connected by the objectified relationship.
7	RealizingElement	OPTIONAL IfcElement	Defines the element that realizes a port connection relationship.

5.4.3.40.2 Entity inheritance

5.4.3.40.3 Definitions applying to General Usage

5.4.3.40.3.1 Identity

5.4.3.40.3.2 Revision Control

5.4.3.40.4 Formal representations

ENTITY IfcRelConnectsPorts
 SUBTYPE OF (IfcRelConnects);
	RelatingPort : IfcPort;
	RelatedPort : IfcPort;
	RealizingElement : OPTIONAL IfcElement;
 WHERE
	NoSelfReference : RelatingPort :<>: RelatedPort;
END_ENTITY;