Class Ifc4x2::IfcCommunicationsAppliance

Nested Relationships

This class is a nested type of Struct Ifc4x2.

Inheritance Relationships

Base Type

Class Documentation

class Ifc4x2::IfcCommunicationsAppliance : public Ifc4x2::IfcFlowTerminal

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 IFC2x4

Type Use Definition IfcCommunicationsAppliance defines the occurrence of any communications appliance; common information about communications appliance types is handled by IfcCommunicationsApplianceType. The IfcCommunicationsApplianceType (if present) may establish the common type name, usage (predefined type), properties, materials, ports, composition, assignments, and representations. The IfcCommunicationsApplianceType is attached using the IfcRelDefinesByType objectified relationship and is accessible by the IsTypedBy inverse attribute. If the IfcCommunicationsApplianceType has ports or aggregated elements, such objects are reflected at the IfcCommunicationsAppliance occurrence using the IfcRelDefinesByObject relationship.

Property Use Definition The property sets relating to this entity are defined by IfcPropertySet and attached by the IfcRelDefinesByProperties relationship. They are accessible by the IsDefinedBy inverse attribute. Property sets may also be specified at the IfcCommunicationsApplianceType, defining the common property data for all occurrences of the same type. They are then accessible by the IsTypedBy inverse attribute pointing to IfcCommunicationsApplianceType.HasPropertySets. If both are given, then the properties directly defined at IfcCommunicationsAppliance override the properties defined at IfcCommunicationsApplianceType. Refer to the documentation at the supertype IfcFlowTerminal and ancestors for inherited property set definitions. The following property set definitions are applicable to this entity: Pset_CommunicationsAppliancePHistory (PSET_PERFORMANCEDRIVEN) Pset_CommunicationsApplianceTypeCommon (PSET_TYPEDRIVENOVERRIDE)

Quantity Use Definition The quantities relating to this entity are defined by IfcElementQuantity and attached by the IfcRelDefinesByProperties relationship. They are accessible by the IsDefinedBy inverse attribute. The following base quantities are defined and shall be exchanged with the IfcElementQuantity.Name = ‘BaseQuantities’. Other quantities, being subjected to local standard of measurement, may be defined with another string value assigned to Name. In this case a valid value for MethodOfMeasurement shall be provided.

Qto_CommunicationsApplianceBaseQuantities

Material Use Definition The material of the IfcCommunicationsAppliance is defined by IfcMaterialConstituentSet or as a fallback by IfcMaterial, and attached by the RelatingMaterial attribute on the IfcRelAssociatesMaterial relationship. It is accessible by the HasAssociations inverse attribute. Material information can also be given at the IfcCommunicationsApplianceType, defining the common attribute data for all occurrences of the same type. The following keywords for IfcMaterialConstituentSet.MaterialConstituents[n].Name shall be used:

Casing: Material from which the casing is constructed.

Composition Use Definition The IfcCommunicationsAppliance may be aggregated into components using IfcRelAggregates where RelatingObject refers to the enclosing IfcCommunicationsAppliance and RelatedObjects contains one or more components. Aggregation use is defined for the following predefined types:

COMPUTER

May contain IfcAudioVisualAppliance components. Computers may be aggregated into audio-visual components such as displays, cameras, speakers, or microphones.

Connection Use Definition The IfcCommunicationsAppliance may be connected to other objects as follows using the indicated relationship:

IfcSystemFurnitureElement (IfcRelConnectsElements): Servers and other networking equipment may be installed in racks.

Port Use Definition The distribution ports relating to the IfcCommunicationsAppliance are defined by IfcDistributionPort and attached by the IfcRelConnectsPortToElement relationship. If the communications appliance occurrence is defined by IfcCommunicationsApplianceType, then the port occurrences must reflect those defined at the IfcCommunicationsApplianceType using the IfcRelDefinesByObject relationship. Ports are specific to the IfcCommunicationsAppliance PredefinedType as follows indicated by the IfcDistributionPort Name, PredefinedType, and FlowDirection:

ANTENNA

Power (ELECTRICAL, SINK): Receives electrical power. Radio (SIGNAL, SINK): Electromagnetic waves. Signal (SIGNAL, SOURCE): The modulated analog signal in a circuit, such as a cable connected to a modem.

COMPUTER

Power (ELECTRICAL, SINK): Receives electrical power. Network (DATA, SINK): A 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. Device (CONTROL, SOURCE): A device connection such as USB or serial, which may connect to equipment such as a building automation controller. Display (AUDIOVISUAL, SOURCE): Audio/video output, such as a cable connected to a display, which may be aggregated into separate channels.

FAX

Power (ELECTRICAL, SINK): Receives electrical power. Telephone (TELEPHONE, SINK): Telephone connection.

MODEM

Power (ELECTRICAL, SINK): Receives electrical power. Signal (SIGNAL, SINK): Modulated analog signal, typically a cable connecting from a communications junction box or an antenna. Internet (DATA, SOURCE): Internet data network. Television (TV, SOURCE): Television modulated signal. Telephone (TELEPHONE, SOURCE): Telephone communications.

PRINTER

Power (ELECTRICAL, SINK): Receives electrical power. Network (DATA, SINK): A 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.

REPEATER

Power (ELECTRICAL, SINK): Receives electrical power. Input (SIGNAL, SINK): The receiving signal. Output (SIGNAL, SOURCE): The transmittes signal.

ROUTER

Power (ELECTRICAL, SINK): Receives electrical power. Uplink (DATA, SINK): Uplink from another network, such as a cable connected to another router or the Internet. Link#1 (DATA, SOURCE): A network link to a routed device such as a cable connecting to a computer. Link#2 (DATA, SOURCE): A network link to a routed device such as a cable connecting to a computer. Link#3 (DATA, SOURCE): A network link to a routed device such as a cable connecting to a computer. Link#4 (DATA, SOURCE): A network link to a routed device such as a cable connecting to a computer. Link#5 (DATA, SOURCE): A network link to a routed device such as a cable connecting to a computer. Link#6 (DATA, SOURCE): A network link to a routed device such as a cable connecting to a computer. Link#7 (DATA, SOURCE): A network link to a routed device such as a cable connecting to a computer. Link#8 (DATA, SOURCE): A network link to a routed device such as a cable connecting to a computer.

Public Types

typedef IfcTemplatedEntityList<IfcCommunicationsAppliance> list

Public Functions

bool hasPredefinedType() const

Whether the optional attribute PredefinedType is defined for this IfcCommunicationsAppliance.

::Ifc4x2::IfcCommunicationsApplianceTypeEnum::Value PredefinedType() const
void setPredefinedType(::Ifc4x2::IfcCommunicationsApplianceTypeEnum::Value v)
const IfcParse::entity &declaration() const
IfcCommunicationsAppliance(IfcEntityInstanceData *e)
IfcCommunicationsAppliance(std::string v1_GlobalId, ::Ifc4x2::IfcOwnerHistory *v2_OwnerHistory, boost::optional<std::string> v3_Name, boost::optional<std::string> v4_Description, boost::optional<std::string> v5_ObjectType, ::Ifc4x2::IfcObjectPlacement *v6_ObjectPlacement, ::Ifc4x2::IfcProductRepresentation *v7_Representation, boost::optional<std::string> v8_Tag, boost::optional<::Ifc4x2::IfcCommunicationsApplianceTypeEnum::Value> v9_PredefinedType)

Public Static Functions

const IfcParse::entity &Class()