7.4.3.11 IfcCommunicationsAppliance

Appareil de communications
Kommunikationsgerät

A communications appliance transmits and receives electronic or digital information as data or sound.

Communication appliances may be fixed in place or may be able to be moved from one space to another. Communication appliances require an electrical supply that may be supplied either by an electrical circuit or provided from a local battery source.

HISTORY  New entity in IFC4

Common Use Definitions

The following concepts are inherited at supertypes:

 Instance diagram

Object Typing

The Object Typing concept applies to this entity as shown in Table 342.
Type
IfcCommunicationsApplianceType
IfcDistributionFlowElementType
IfcDistributionElementType

Table 342 — IfcCommunicationsAppliance Object Typing



Property Sets for Objects

The Property Sets for Objects concept applies to this entity as shown in Table 343.
PredefinedTypeName
 Pset_CommunicationsAppliancePHistory
 Pset_CommunicationsApplianceTypeCommon
 Pset_SoundGeneration
 Pset_ElectricalDeviceCommon
 Pset_Condition
 Pset_EnvironmentalImpactIndicators
 Pset_EnvironmentalImpactValues
 Pset_ManufacturerOccurrence
 Pset_ManufacturerTypeInformation
 Pset_PackingInstructions
 Pset_ServiceLife
 Pset_Warranty

Table 343 — IfcCommunicationsAppliance Property Sets for Objects



Quantity Sets

The Quantity Sets concept applies to this entity as shown in Table 344.
Name
Qto_CommunicationsApplianceBaseQuantities

Table 344 — IfcCommunicationsAppliance Quantity Sets



Material Constituents

The Material Constituents concept applies to this entity as shown in Table 345.
NameDescription
CasingMaterial from which the casing is constructed.

Table 345 — IfcCommunicationsAppliance Material Constituents



Object Aggregation

The Object Aggregation concept applies to this entity as shown in Table 346.
PredefinedTypeRelatedObjectsDescription
COMPUTERIfcAudioVisualApplianceComputers may be aggregated into audio-visual components such as displays, cameras, speakers, or microphones.

Table 346 — IfcCommunicationsAppliance Object Aggregation



Port Nesting

The Port Nesting concept applies to this entity as shown in Table 347.
PredefinedTypeNameFlowTypeDescription
ANTENNAPowerSINKELECTRICALReceives electrical power.
ANTENNARadioSINKSIGNALElectromagnetic waves.
ANTENNASignalSOURCESIGNALThe modulated analog signal in a circuit, such as a cable connected to a modem.
COMPUTERPowerSINKELECTRICALReceives electrical power.
COMPUTERNetworkSINKDATAA network connection, may be wired or wireless (implicit antenna), such as a cable connected from a data outlet jack or from a router communications appliance. While communication is bidirectional, the router-end is considered to be the source.
COMPUTERDeviceSOURCECONTROLA device connection such as USB or serial, which may connect to equipment such as a building automation controller.
COMPUTERDisplaySOURCEAUDIOVISUALAudio/video output, such as a cable connected to a display, which may be aggregated into separate channels.
FAXPowerSINKELECTRICALReceives electrical power.
FAXPhoneSINKTELEPHONETelephone connection.
MODEMPowerSINKELECTRICALReceives electrical power.
MODEMSignalSINKSIGNALModulated analog signal, typically a cable connecting from a communications junction box or an antenna.
MODEMInternetSOURCEDATAInternet data network.
MODEMTelevisionSOURCETVTelevision modulated signal.
MODEMTelephoneSOURCETELEPHONETelephone communications.
PRINTERPowerSINKELECTRICALReceives electrical power.
PRINTERNetworkSINKDATAA network connection, may be wired or wireless.
PRINTERPhoneSINKTELEPHONETelephone connection for fax support.
REPEATERPowerSINKELECTRICALReceives electrical power.
REPEATERInputSINKSIGNALThe receiving signal.
REPEATEROutputSOURCESIGNALThe transmitted amplified signal.
ROUTERPowerSINKELECTRICALReceives electrical power.
ROUTERUplinkSINKDATAUplink from another network, such as a cable connected to another router or modem accessing the Internet.
ROUTERWiFiSOURCEDATAA wireless access point.
ROUTERLink#1SOURCEDATAA network link to a routed device such as a cable connecting to a computer.
ROUTERLink#2SOURCEDATAA network link to a routed device such as a cable connecting to a computer.
ROUTERLink#3SOURCEDATAA network link to a routed device such as a cable connecting to a computer.
ROUTERLink#4SOURCEDATAA network link to a routed device such as a cable connecting to a computer.
ROUTERLink#5SOURCEDATAA network link to a routed device such as a cable connecting to a computer.
ROUTERLink#6SOURCEDATAA network link to a routed device such as a cable connecting to a computer.
ROUTERLink#7SOURCEDATAA network link to a routed device such as a cable connecting to a computer.
ROUTERLink#8SOURCEDATAA network link to a routed device such as a cable connecting to a computer.

Table 347 — IfcCommunicationsAppliance Port Nesting




XSD Specification:

 <xs:element name="IfcCommunicationsAppliance" type="ifc:IfcCommunicationsAppliance" substitutionGroup="ifc:IfcFlowTerminal" nillable="true"/>
 <xs:complexType name="IfcCommunicationsAppliance">
  <xs:complexContent>
   <xs:extension base="ifc:IfcFlowTerminal">
    <xs:attribute name="PredefinedType" type="ifc:IfcCommunicationsApplianceTypeEnum" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>

EXPRESS Specification:

ENTITY IfcCommunicationsAppliance
SUBTYPE OF IfcFlowTerminal;
PredefinedType : OPTIONAL IfcCommunicationsApplianceTypeEnum;
WHERE
CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR (PredefinedType <> IfcCommunicationsApplianceTypeEnum.USERDEFINED) OR ((PredefinedType = IfcCommunicationsApplianceTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
CorrectTypeAssigned : (SIZEOF(IsTypedBy) = 0) OR ('IFCELECTRICALDOMAIN.IFCCOMMUNICATIONSAPPLIANCETYPE' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType));
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

Formal Propositions:

CorrectPredefinedType : Either the PredefinedType attribute is unset (e.g. because an IfcCommunicationsApplianceType is associated), or the inherited attribute ObjectType shall be provided, if the PredefinedType is set to USERDEFINED.
CorrectTypeAssigned : Either there is no communications appliance type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcCommunicationsApplianceType.

Inheritance Graph:

ENTITY IfcCommunicationsAppliance
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 IfcObject
ObjectType : OPTIONAL IfcLabel;
INVERSE
IsDeclaredBy : SET [0:1] OF IfcRelDefinesByObject FOR RelatedObjects;
Declares : SET OF IfcRelDefinesByObject FOR RelatingObject;
IsTypedBy : SET [0:1] OF IfcRelDefinesByType FOR RelatedObjects;
IsDefinedBy : SET OF IfcRelDefinesByProperties FOR RelatedObjects;
ENTITY IfcProduct
ObjectPlacement : OPTIONAL IfcObjectPlacement;
Representation : OPTIONAL IfcProductRepresentation;
INVERSE
ReferencedBy : SET OF IfcRelAssignsToProduct FOR RelatingProduct;
ENTITY IfcElement
Tag : OPTIONAL IfcIdentifier;
INVERSE
FillsVoids : SET [0:1] OF IfcRelFillsElement FOR RelatedBuildingElement;
ConnectedTo : SET OF IfcRelConnectsElements FOR RelatingElement;
IsInterferedByElements : SET OF IfcRelInterferesElements FOR RelatedElement;
InterferesElements : SET OF IfcRelInterferesElements FOR RelatingElement;
HasProjections : SET OF IfcRelProjectsElement FOR RelatingElement;
ReferencedInStructures : SET OF IfcRelReferencedInSpatialStructure FOR RelatedElements;
HasOpenings : SET OF IfcRelVoidsElement FOR RelatingBuildingElement;
IsConnectionRealization : SET OF IfcRelConnectsWithRealizingElements FOR RealizingElements;
ProvidesBoundaries : SET OF IfcRelSpaceBoundary FOR RelatedBuildingElement;
ConnectedFrom : SET OF IfcRelConnectsElements FOR RelatedElement;
ContainedInStructure : SET [0:1] OF IfcRelContainedInSpatialStructure FOR RelatedElements;
ENTITY IfcDistributionElement
INVERSE
HasPorts : SET OF IfcRelConnectsPortToElement FOR RelatedElement;
ENTITY IfcDistributionFlowElement
INVERSE
HasControlElements : SET [0:1] OF IfcRelFlowControlElements FOR RelatingFlowElement;
ENTITY IfcFlowTerminal
ENTITY IfcCommunicationsAppliance
PredefinedType : OPTIONAL IfcCommunicationsApplianceTypeEnum;
END_ENTITY;

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