point – Project Haystack

def

point

Data point such as a sensor or actuator. See Points chapter.

meta

def	point
doc	See above
docTaxonomy	✓
is	entity
lib	lib:phIoT
mandatory	✓

supertypes

marker	Marker labels a dict with typing information
entity	Top-level dicts with a unique identifier

subtypes

cur-point	Point with support to report a "real-time" current value
his-point	Historized point with a history log of timestamp/value pairs
synthetic-point	See Synthetics chapter
computed-point	See Synthetics chapter
ml-point	See Synthetics chapter
sim-point	See Synthetics chapter
weather-point	Weather station observation point
writable-point	Point with writable output using 16-level priority array

tags

cur	Supports current value
dis	Display name for an entity
enum	Defines an eumeration of string key names
equipRef	Reference to equip which contains this entity
his	Supports historization of data
id	Defines the unique identifier of an entity in system using a `ref` value type
kind	Kind name used to identity a value data type
maxVal	Inclusive maximum for a numeric value
minVal	Inclusive minimum for a numeric value
pointFunction	Classifies the point as a sensor, command, or setpoint
pointQuantity	Quantity the point senses or controls
pointSubject	What the point senses or controls
siteRef	Reference to site which contains the entity
spaceRef	Reference to space which contains this entity
systemRef	Reference to system
tz	Timezone identifier from standard timezone database
unit	Unit identifier from standard unit database
writable	Supports writing data