IfcRelConnectsPortToElement

BACnet MVD

#### IfcRelConnectsPortToElement

Natural language names

| Verbindet Anschluss mit Element - Relation (veraltert)
| Rel Connects Port To Element

Change log

Item | SPF | XML | Change | Description
--- | --- | --- | --- | ---
IFC2x3 to IFC4
IfcRelConnectsPortToElement |  |  |  |
OwnerHistory |  |  | MODIFIED | Instantiation changed to OPTIONAL.
RelatedElement |  |  | MODIFIED | Type changed from IfcElement to IfcDistributionElement.

##### Semantic definitions at the entity

Entity definition

IfcRelConnectsPortToElement is a relationship between a distribution element and dynamically connected ports where connections are realised to other distribution elements.

Ports contained in different elements are connected to each other using the IfcRelConnectsPorts relationship.

> NOTE See IfcRelNests for its usages to represent an ordered collection of ports that are contained by an element and relevant subtypes of IfcDistributionElement for examples and port use definition sections.

> HISTORY New entity in IFC2x2.

> IFC4 CHANGE The objectified relation IfcRelConnectsPortToElement is now specialized for use of dynamically connected ports. For fixed ports, use IfcRelNests instead. Previously this objectified relationship IfcRelConnectsPortToElement defined the relationship that is made between a port and the IfcElement in which it is contained. It is a 1 to 1 relationship. The IfcRelConnectsPortToElement established a whole part relationship between the element and its port. The port is used as the means to connect to other ports in other elements.

Attribute definitions

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
5 | RelatingPort | IfcPort |  | Reference to an Port that is connected by the objectified relationship. |  | X

6

RelatedElement

IfcDistributionElement

Reference to an IfcDistributionElement that has ports assigned.

> IFC4 CHANGE Data type restricted to IfcDistributionElement.

X

##### Inherited definitions from supertypes

Entity inheritance
Attribute inheritance

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
IfcRoot
1 | GlobalId | IfcGloballyUniqueId |  | Assignment of a globally unique identifier within the entire software world. | X | 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

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 | X
4 | Description | IfcText | ? | Optional description, provided for exchanging informative comments. |  | X
IfcRelationship
IfcRelConnects
IfcRelConnectsPortToElement
5 | RelatingPort | IfcPort |  | Reference to an Port that is connected by the objectified relationship. |  | X

6

RelatedElement

IfcDistributionElement

Reference to an IfcDistributionElement that has ports assigned.

> IFC4 CHANGE Data type restricted to IfcDistributionElement.

X

##### Definitions applying to Design Transfer View

Concept inheritance

# | Concept | Template | Model View
--- | --- | --- | ---
IfcRoot
| Revision Control | Revision Control | Design Transfer View

##### Definitions applying to BACnet View

Concept inheritance

# | Concept | Template | Model View
--- | --- | --- | ---
IfcRoot
| Revision Control | Revision Control | Design Transfer View

##### Formal representations

XML Specification
`<xs:element name="IfcRelConnectsPortToElement" type="ifc:IfcRelConnectsPortToElement" substitutionGroup="ifc:IfcRelConnects" nillable="true"/>
<xs:complexType name="IfcRelConnectsPortToElement">
<xs:complexContent>
<xs:extension base="ifc:IfcRelConnects">
<xs:sequence>
<xs:element name="RelatingPort" type="ifc:IfcPort" nillable="true"/>
<xs:element name="RelatedElement" type="ifc:IfcDistributionElement" nillable="true"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
`
EXPRESS Specification
`ENTITY IfcRelConnectsPortToElement
SUBTYPE OF (IfcRelConnects);
RelatingPort : IfcPort;
RelatedElement : IfcDistributionElement;
END_ENTITY;

EXPRESS-G diagram

`

References: IfcDistributionElement IfcPort

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