IfcDistributionPort

Natural language names
Anschluss / Port
Distribution Port
Port de distribution
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4
    IfcDistributionPort
      OwnerHistoryMODIFIEDInstantiation changed to OPTIONAL.
      PredefinedTypeADDED
      SystemTypeADDED
IFC4x2 DRAFT 1
    IfcDistributionPort
      PositionedRelativeToADDED
Semantic definitions at the entity
Entity definition

A distribution port is an inlet or outlet of a product through which a particular substance may flow.

Distribution ports are used for passage of solid, liquid, or gas substances, as well as electricity for power or communications. Flow segments (pipes, ducts, cables) may be used to connect ports across products. Distribution ports are defined by system type and flow direction such that for two ports to be connected, they must share the same system type and have opposite flow directions (one side being a SOURCE and the other being a SINK). Ports are similar to openings in that they do not have any visible geometry; such geometry is captured at the shape representation of the enclosing element or element type. Ports may have placement that indicates the position and orientation of the connection.

Ports are assigned the distribution systems in order to indicate its role in a particular system, e.g. cold water inlet.

HISTORY  New entity in IFC2x2
IFC4 CHANGE  Ports are now related to products and product types using the IfcRelNests relationship; use of IfcRelConnectsPortToElement is now reserved for dynamically attached ports (such as drilling a hole in a tank).
Attribute definitions
#AttributeTypeCardinalityDescription G
8FlowDirectionIfcFlowDirectionEnum? Enumeration that identifies if this port is a Sink (inlet), a Source (outlet) or both a SinkAndSource. X
9PredefinedTypeIfcDistributionPortTypeEnum? X
10SystemTypeIfcDistributionSystemEnum? Enumeration that identifies the system type. If a system type is defined, the port may only be connected to other ports having the same system type.X
Inherited definitions from supertypes
Entity inheritance IfcPort IfcProduct IfcObject IfcObjectDefinition IfcRoot
Attribute inheritance
#AttributeTypeCardinalityDescriptionG
IfcRoot
1GlobalIdIfcGloballyUniqueId Assignment of a globally unique identifier within the entire software world. X
2OwnerHistoryIfcOwnerHistory? 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
3NameIfcLabel? 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
4DescriptionIfcText? Optional description, provided for exchanging informative comments.X
IfcObjectDefinition
HasAssignmentsIfcRelAssigns
@RelatedObjects
S[0:?]Reference to the relationship objects, that assign (by an association relationship) other subtypes of IfcObject to this object instance. Examples are the association to products, processes, controls, resources or groups.X
NestsIfcRelNests
@RelatedObjects
S[0:1]References to the decomposition relationship being a nesting. It determines that this object definition is a part within an ordered whole/part decomposition relationship. An object occurrence or type can only be part of a single decomposition (to allow hierarchical strutures only).
IFC4 CHANGE  The inverse attribute datatype has been added and separated from Decomposes defined at IfcObjectDefinition.
X
IsNestedByIfcRelNests
@RelatingObject
S[0:?]References to the decomposition relationship being a nesting. It determines that this object definition is the whole within an ordered whole/part decomposition relationship. An object or object type can be nested by several other objects (occurrences or types).
IFC4 CHANGE  The inverse attribute datatype has been added and separated from IsDecomposedBy defined at IfcObjectDefinition.
X
HasContextIfcRelDeclares
@RelatedDefinitions
S[0:1]References to the context providing context information such as project unit or representation context. It should only be asserted for the uppermost non-spatial object.
IFC4 CHANGE  The inverse attribute datatype has been added.
X
IsDecomposedByIfcRelAggregates
@RelatingObject
S[0:?]References to the decomposition relationship being an aggregation. It determines that this object definition is whole within an unordered whole/part decomposition relationship. An object definitions can be aggregated by several other objects (occurrences or parts).
IFC4 CHANGE  The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates.
X
DecomposesIfcRelAggregates
@RelatedObjects
S[0:1]References to the decomposition relationship being an aggregation. It determines that this object definition is a part within an unordered whole/part decomposition relationship. An object definitions can only be part of a single decomposition (to allow hierarchical strutures only).
IFC4 CHANGE  The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates.
X
HasAssociationsIfcRelAssociates
@RelatedObjects
S[0:?]Reference to the relationship objects, that associates external references or other resource definitions to the object.. Examples are the association to library, documentation or classification.X
IfcObject
5ObjectTypeIfcLabel? The type denotes a particular type that indicates the object further. The use has to be established at the level of instantiable subtypes. In particular it holds the user defined type, if the enumeration of the attribute PredefinedType is set to USERDEFINED.
X
IsDeclaredByIfcRelDefinesByObject
@RelatedObjects
S[0:1]Link to the relationship object pointing to the declaring object that provides the object definitions for this object occurrence. The declaring object has to be part of an object type decomposition. The associated IfcObject, or its subtypes, contains the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes.
IFC4 CHANGE  New inverse relationship, change made with upward compatibility for file based exchange.
X
DeclaresIfcRelDefinesByObject
@RelatingObject
S[0:?]Link to the relationship object pointing to the reflected object(s) that receives the object definitions. The reflected object has to be part of an object occurrence decomposition. The associated IfcObject, or its subtypes, provides the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes.
IFC4 CHANGE  New inverse relationship, change made with upward compatibility for file based exchange.
X
IsTypedByIfcRelDefinesByType
@RelatedObjects
S[0:1]Set of relationships to the object type that provides the type definitions for this object occurrence. The then associated IfcTypeObject, or its subtypes, contains the specific information (or type, or style), that is common to all instances of IfcObject, or its subtypes, referring to the same type.
IFC4 CHANGE  New inverse relationship, the link to IfcRelDefinesByType had previously be included in the inverse relationship IfcRelDefines. Change made with upward compatibility for file based exchange.
X
IsDefinedByIfcRelDefinesByProperties
@RelatedObjects
S[0:?]Set of relationships to property set definitions attached to this object. Those statically or dynamically defined properties contain alphanumeric information content that further defines the object.
IFC4 CHANGE  The data type has been changed from IfcRelDefines to IfcRelDefinesByProperties with upward compatibility for file based exchange.
X
IfcProduct
6ObjectPlacementIfcObjectPlacement? Placement of the product in space, the placement can either be absolute (relative to the world coordinate system), relative (relative to the object placement of another product), or constraint (e.g. relative to grid axes). It is determined by the various subtypes of IfcObjectPlacement, which includes the axis placement information to determine the transformation for the object coordinate system.X
7RepresentationIfcProductRepresentation? Reference to the representations of the product, being either a representation (IfcProductRepresentation) or as a special case a shape representations (IfcProductDefinitionShape). The product definition shape provides for multiple geometric representations of the shape property of the object within the same object coordinate system, defined by the object placement.X
ReferencedByIfcRelAssignsToProduct
@RelatingProduct
S[0:?]Reference to the IfcRelAssignsToProduct relationship, by which other products, processes, controls, resources or actors (as subtypes of IfcObjectDefinition) can be related to this product.X
PositionedRelativeToIfcRelPositions
@RelatedProducts
S[0:1]X
IfcPort
ContainedInIfcRelConnectsPortToElement
@RelatingPort
S[0:1]Reference to the element to port connection relationship. The relationship then refers to the element in which this port is contained.
IFC4 CHANGE  The cardinality has been changed from 1:1 to 0:1. IFC4 DEPRECATION  The inverse relationship is deprecated for fixed ports due to deprecation of IfcRelConnectsPortToElement for this usage. Use inverse relationship Nests instead.
X
ConnectedFromIfcRelConnectsPorts
@RelatedPort
S[0:1]Reference to a port that is connected by the objectified relationship.X
ConnectedToIfcRelConnectsPorts
@RelatingPort
S[0:1]Reference to the port connection relationship. The relationship then refers to the other port to which this port is connected.X
IfcDistributionPort
8FlowDirectionIfcFlowDirectionEnum? Enumeration that identifies if this port is a Sink (inlet), a Source (outlet) or both a SinkAndSource. X
9PredefinedTypeIfcDistributionPortTypeEnum? X
10SystemTypeIfcDistributionSystemEnum? Enumeration that identifies the system type. If a system type is defined, the port may only be connected to other ports having the same system type.X
Definitions applying to General Usage

 Instance diagram


Concept usage

Product Local Placement

The Product Local Placement concept applies to this entity.

The placement of a port indicates the position and orientation of how it may connect to a compatible port on another product. The placement shall be relative to the nesting IfcDistributionElement, IfcDistributionElementType, or enclosing IfcDistributionPort.

The Location is the midpoint of the physical connection, unless otherwise indicated by cardinal point on a material profile.

The Axis points in the direction of the physical connection away from the product if FlowDirection equals SOURCE (or SOURCEANDSINK or NOTDEFINED), or points opposite direction (to the product) if the FlowDirection equals SINK.

NOTE  The rationale for positioning the Axis in the direction of flow is to allow for the same geometry to be used, such as for connectors with polarized cross-section.

The RefDirection points in the direction of the local X axis of the material profile, where the local Y axis points up if looking towards the Axis where the local X axis points right.

Upon connecting elements through ports with rigid connections, each object shall be aligned such that the effective Location, Axis, and RefDirection of each port is aligned to be equal (with exception for circular profiles where the RefDirection need not be equal).



Property Sets for Objects

The Property Sets for Objects concept template applies to this entity as shown in Table 230.

PsetNameProperties
Pset_DistributionPortCommon
TemplatePropertyNameValue
Single ValuePortNumberIfcInteger
Single ValueColorCodeIfcLabel
Pset_DistributionPortTypeCable
TemplatePropertyNameValueUpperValueLowerValueSetValueReference
Enumerated ValueConnectionTypeIfcLabelPEnum_DistributionPortElectricalType
Single ValueConnectionSubtypeIfcLabel
Enumerated ValueConnectionGenderIfcLabelPEnum_DistributionPortGender
Enumerated ValueConductorFunctionIfcLabelPEnum_ConductorFunctionEnum
Single ValueCurrentContent3rdHarmonicIfcPositiveRatioMeasure
Bounded ValueCurrentIfcElectricCurrentMeasure
Bounded ValueVoltageIfcElectricVoltageMeasure
Bounded ValuePowerIfcPowerMeasure
List ValueProtocolsIfcIdentifier
Pset_DistributionPortTypeDuct
TemplatePropertyNameValueUpperValueLowerValueSetValueReference
Enumerated ValueConnectionTypeIfcLabelPEnum_DuctConnectionType
Single ValueConnectionSubTypeIfcLabel
Single ValueNominalWidthIfcPositiveLengthMeasure
Single ValueNominalHeightIfcPositiveLengthMeasure
Single ValueNominalThicknessIfcPositiveLengthMeasure
Bounded ValueDryBulbTemperatureIfcThermodynamicTemperatureMeasure
Bounded ValueWetBulbTemperatureIfcThermodynamicTemperatureMeasure
Bounded ValueVolumetricFlowRateIfcVolumetricFlowRateMeasure
Bounded ValueVelocityIfcLinearVelocityMeasure
Bounded ValuePressureIfcPressureMeasure
Pset_DistributionPortTypePipe
TemplatePropertyNameValueUpperValueLowerValueSetValueReference
Enumerated ValueConnectionTypeIfcLabelPEnum_PipeEndStyleTreatment
Single ValueConnectionSubTypeIfcLabel
Single ValueNominalDiameterIfcPositiveLengthMeasure
Single ValueInnerDiameterIfcPositiveLengthMeasure
Single ValueOuterDiameterIfcPositiveLengthMeasure
Bounded ValueTemperatureIfcThermodynamicTemperatureMeasure
Bounded ValueVolumetricFlowRateIfcVolumetricFlowRateMeasure
Bounded ValueMassFlowRateIfcMassFlowRateMeasure
Bounded ValueFlowConditionIfcPositiveRatioMeasure
Bounded ValueVelocityIfcLinearVelocityMeasure
Bounded ValuePressureIfcPressureMeasure

Table 230 — IfcDistributionPort Property Sets for Objects



Port Nesting

The Port Nesting concept applies to this entity.

Distribution ports are indicated on products and product types using the IfcRelNests relationship where RelatingObject refers to the enclosing IfcDistributionElement or IfcDistributionElementType respectively. The order of ports indicates logical ordering such within outlets, junction boxes, or communications equipment.

Ports may be further nested into sub-ports, for indicating specific connections on components or pins.



Port Connectivity

The Port Connectivity concept applies to this entity.

IfcDistributionPort may be connected to other objects as follows using the indicated relationship:

Figure 275 illustrates distribution port connectivity.

Connection Use Definition

Figure 275 — Distribution port connectivity



Product Assignment

The Product Assignment concept template applies to this entity as shown in Table 231.

TypeDescription
IfcDistributionSystemIndicates a system that is hosted by the port, as the origination.
IfcDistributionCircuitIndicates a circuit that is switched by the port, as the origination.

Table 231 — IfcDistributionPort Product Assignment

The IfcDistributionPort may be assigned to the following entities using relationships as indicated:



mvdXML Specification
<?xml version="1.0"?>
<ConceptRoot xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" uuid="1df86983-1a73-46b6-a5d7-8165a884e288" name="IfcDistributionPort" status="sample" applicableRootEntity="IfcDistributionPort">
  <Applicability uuid="00000000-0000-0000-0000-000000000000" status="sample">
    <Template ref="ae45ef43-c8fd-4d60-9764-381b457e21c1" />
    <TemplateRules operator="and" />
  </Applicability>
  <Concepts>
    <Concept uuid="2454212e-305f-4fea-80b7-77529bfb99f8" name="Product Local Placement" status="sample" override="false">
      <Template ref="cbe85b5f-7912-4a43-8bb7-1e63bf40b26d" />
    </Concept>
    <Concept uuid="96e376f7-2387-4543-ba0f-ddf98b88bb32" name="Property Sets for Objects" status="sample" override="false">
      <Template ref="f74255a6-0c0e-4f31-84ad-24981db62461" />
      <TemplateRules operator="and">
        <TemplateRule Parameters="PsetName[Value]='Pset_DistributionPortCommon'" />
        <TemplateRule Parameters="PsetName[Value]='Pset_DistributionPortTypeCable'" />
        <TemplateRule Parameters="PsetName[Value]='Pset_DistributionPortTypeDuct'" />
        <TemplateRule Parameters="PsetName[Value]='Pset_DistributionPortTypePipe'" />
      </TemplateRules>
    </Concept>
    <Concept uuid="bdefca5c-a1db-48ff-a5ce-f07e973390a9" name="Port Nesting" status="sample" override="false">
      <Template ref="bafc93b7-d0e2-42d8-84cf-5da20ee1480a" />
    </Concept>
    <Concept uuid="62a878e5-30a1-45a7-bf7b-f8f9e3dbcb9c" name="Port Connectivity" status="sample" override="false">
      <Template ref="16fe846f-32b1-4595-bbb0-c4ad053dab24" />
    </Concept>
    <Concept uuid="3fd562be-cb3e-413b-b0e1-6b4a2c58a5c4" name="Product Assignment" status="sample" override="false">
      <Template ref="ec9cfb04-adfe-4868-8168-d78fe995a913" />
      <TemplateRules operator="and">
        <TemplateRule Description="Indicates a system that is hosted by the port, as the origination." Parameters="Type[Type]='IfcDistributionSystem'" />
        <TemplateRule Description="Indicates a circuit that is switched by the port, as the origination." Parameters="Type[Type]='IfcDistributionCircuit'" />
      </TemplateRules>
    </Concept>
  </Concepts>
</ConceptRoot>
Concept inheritance

#ConceptTemplateModel View
IfcRoot
IdentitySoftware IdentityGeneral Usage
Revision ControlRevision ControlGeneral Usage
IfcObjectDefinition
Classification AssociationClassification AssociationGeneral Usage
IfcObject
Object User IdentityObject User IdentityGeneral Usage
Object Predefined TypeObject Predefined TypeGeneral Usage
Object TypingObject TypingGeneral Usage
Property Sets with OverrideProperty Sets with OverrideGeneral Usage
IfcProduct
Product PlacementProduct PlacementGeneral Usage
Product Geometric RepresentationProduct Geometric RepresentationGeneral Usage
IfcDistributionPort
Product Local PlacementProduct Local PlacementGeneral Usage
Property Sets for ObjectsProperty Sets for ObjectsGeneral Usage
Port NestingPort NestingGeneral Usage
Port ConnectivityPort ConnectivityGeneral Usage
Product AssignmentProduct AssignmentGeneral Usage
Examples
Formal representations
XML Specification
 <xs:element name="IfcDistributionPort" type="ifc:IfcDistributionPort" substitutionGroup="ifc:IfcPort" nillable="true"/>
 <xs:complexType name="IfcDistributionPort">
  <xs:complexContent>
   <xs:extension base="ifc:IfcPort">
    <xs:attribute name="FlowDirection" type="ifc:IfcFlowDirectionEnum" use="optional"/>
    <xs:attribute name="PredefinedType" type="ifc:IfcDistributionPortTypeEnum" use="optional"/>
    <xs:attribute name="SystemType" type="ifc:IfcDistributionSystemEnum" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcDistributionPort
 SUBTYPE OF (IfcPort);
  FlowDirection : OPTIONAL IfcFlowDirectionEnum;
  PredefinedType : OPTIONAL IfcDistributionPortTypeEnum;
  SystemType : OPTIONAL IfcDistributionSystemEnum;
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

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