7.2.4.10 Pset_ControllerPHistory
7.2.4.10.1 Semantic definition
Properties for history of controller values.
HISTORY: Added in IFC4.
7.2.4.10.2 Applicable entities
7.2.4.10.3 Properties
| Name | Property Type | Data Type | Description | |
|---|---|---|---|---|
| ValueHistory | IfcPropertyReferenceValue | IfcTimeSeries |
Indicates values over time which may be recorded continuously or only when changed beyond a particular deadband. The range of possible values is defined by the Value property on the corresponding occurrence property set (Pset_ControllerTypeFloating, Pset_ControllerTypeProportional, Pset_ControllerTypeMultiPosition, or Pset_ControllerTypeTwoPosition). |
|
| Quality | IfcPropertyReferenceValue | IfcTimeSeries |
Indicates the quality of measurement or failure condition, which may be further qualified by the Status. True: measured values are considered reliable; False: measured values are considered not reliable (i.e. a fault has been detected); Unknown: reliability of values is uncertain. |
|
| Status | IfcPropertyReferenceValue | IfcTimeSeries |
Status of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as "New" - element designed as new addition, "Existing" - element exists and remains, "Demolish" - element existed but is to be demolished, "Temporary" - element will exists only temporary (like a temporary support structure). Indicates an error code or identifier, whose meaning is specific to the particular automation system. Example values include: 'ConfigurationError', 'NotConnected', 'DeviceFailure', 'SensorFailure', 'LastKnown, 'CommunicationsFailure', 'OutOfService'. |