This objectified relationship between a distribution flow element occurrence and one-to-many control element occurrences indicates that the control element(s) sense or control some aspect of the flow element. It is applied to IfcDistributionFlowElement and IfcDistributionControlElement.
This relationship may be used to indicate an operational relationship such as an actuator operating a valve, damper, or switch. It may also be used to indicate a sensing relationship such as a sensor detecting conditions of fluid flow.
This relationship implies a sensing or controlling relationship; if elements are merely connected without any control relationship, then IfcRelConnectsElements should be used.
HISTORY New entity in IFC2x.
|1||GlobalId||IfcGloballyUniqueId||Assignment of a globally unique identifier within the entire software world.|
|2||OwnerHistory||OPTIONAL 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.
|3||Name||OPTIONAL 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.|
|4||Description||OPTIONAL IfcText||Optional description, provided for exchanging informative comments.|
|5||RelatedControlElements||SET [1:?] OF IfcDistributionControlElement||References control elements which may be used to impart control on the Distribution Element.|
|6||RelatingFlowElement||IfcDistributionFlowElement||Relationship to a distribution flow element|
IfcRoot assigns the globally unique ID. In addition it may provide for a name and a description about the concept.
Ownership, history, and merge state is captured using IfcOwnerHistory.
ENTITY IfcRelFlowControlElements SUBTYPE OF (IfcRelConnects); RelatedControlElements : SET [1:?] OF IfcDistributionControlElement; RelatingFlowElement : IfcDistributionFlowElement; END_ENTITY;