HisPoint
HisPoint : Point
Historized point with a history log of timestamp/value pairs. Points
marked as historized indicate the system can response to queries via
the hisRead operation to return a trend log of timestamp/value pairs.
There are typically two mechanisms for historization:
- the local system performs the historization by logging the
point's
curValto local storage - in overlay systems a downstream device performs the historization and the local system synchronizes the history data in batch on a periodic basis
Also see Points chapter.
Unique identifier for entity in its project
Type of this entity
Data point such as a sensor or actuator
Supports current value
Defines an eumeration of string key names
Reference to equip which contains this entity
Supports historization of data
Kind name used to identity a value data type
Inclusive maximum for a numeric value
Inclusive minimum for a numeric value
Reference to site which contains the entity
Reference to space which contains this entity
Reference to system
Timezone identifier from standard timezone database
Unit identifier from standard unit database
Supports writing data
Parent Equips that contain this Point
Error description when hisStatus indicates error condition
Indicates the way that history data is collected for a point
Status of point's history collection or synchronization
Indicates values which are a continuous stream of totalization
Marker
Supports historization of data
Str?
Error description when hisStatus indicates error condition
HisMode?
Indicates the way that history data is collected for a point.
HisStatus?
Status of point's history collection or synchronization
Marker?
Indicates values which are a continuous stream of totalization. History data reads and should be normalized by computing the delta.