IfcController

IfcController

Definition from IAI: This class defines properties of a controller which interacts with other devices in a control system such as a building automation control system.

An IfcController typically has a relationship with an IfcSensor and/or an IfcActuator. These relationships can be handled either through aggregation (e.g., a unitized controller/actuator assembly) using the IfcRelAssemblesElements objectified relationship or simply as an arbitrary grouping of related devices using the IfcRelGroups objectified relationship.

HISTORY: New entity in IFC R2.0
ISSUES: See issues and change log for changes made in IFC R2x.

Geometry Use Definitions

The geometric representation of IfcController is given by the IfcProductDefinitionShape, allowing multiple geometric representations. Included are:

Local Placement

The use of local placement is defined at the supertype IfcControlElement.

Standard Geometric Representation

Currently, the use of attribute driven geometry for this class is not supported. The standard geometric representation is defined using explicit geometry.

B-Rep Representation

The faceted B-Rep capabilities (with or without voids) shall be supported for B-Rep representation.

EXPRESS specification:

ENTITY IfcController

SUBTYPE OF (

IfcControlElement);

END_ENTITY;

References (1):

Name

Type

Referred through

Express-G

IfcControlElement

Entity

Subtype

Diagram 2

Inheritance graph

ENTITY IfcController;

ENTITY IfcRoot;

GlobalId

IfcGloballyUniqueId;

OwnerHistory

IfcOwnerHistory;

Name

OPTIONAL IfcLabel;

Description

OPTIONAL IfcText;

ENTITY IfcObject;

ObjectType

OPTIONAL IfcLabel;

INVERSE

IsDefinedBy

SET OF IfcRelDefines FOR RelatedObjects;

HasAssociations

SET OF IfcRelAssociates FOR RelatedObjects;

HasAssignments

SET OF IfcRelAssigns FOR RelatedObjects;

Decomposes

SET OF IfcRelDecomposes FOR RelatedObjects;

IsDecomposedBy

SET [0:1] OF IfcRelDecomposes FOR RelatingObject;

ENTITY IfcProduct;

ObjectPlacement

OPTIONAL IfcObjectPlacement;

Representation

OPTIONAL IfcProductRepresentation;

INVERSE

ReferencedBy

SET OF IfcRelAssignsToProduct FOR RelatingProduct;

ENTITY IfcElement;

Tag

OPTIONAL IfcIdentifier;

INVERSE

ConnectedTo

SET OF IfcRelConnectsElements FOR RelatingElement;

ConnectedFrom

SET OF IfcRelConnectsElements FOR RelatedElement;

ContainedInStructure

SET [0:1] OF IfcRelContainedInSpatialStructure FOR RelatedElements;

ENTITY IfcControlElement;

ControlElementId

IfcLabel;

INVERSE

AssignedToFlowElement

SET [0:1] OF IfcRelFlowControlElements FOR RelatedControlElements;

END_ENTITY;