User Manual

Graphics Builder
Overview
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How semantic tags create structure in the system
Desigo Control Point uses a semantic tagging model, which is based on the open source Project Haystack
model. Rather than object instance numbers or proprietary data point names, a semantic tagging model uses
standardized, descriptive metadata to categorize and interpret data point information.
The Haystack tags site, equip and point create a basic hierarchy in Desigo Control Point. The following figure
outlines how these tags are used in the context of a building hierarchy.
①
site
The site tag represents a building or other type of facility with a unique street address. In this example,
both Building and Default site have a site tag.
②
equip
The equip tag represents an equipment asset, which is often a physical asset, such as an AHU, boiler,
or chiller. An equip tag can also be used for a logical grouping, such as a chiller plant.
equip objects are structured and can have references to other equip objects or to site objects. In this
example:
● Cooling coil has a parent equip reference (equipRef) to Air handling unit West Wing.
● Air handling unit West Wing has a parent equip reference (equipRef) to Vent & air cond.plants.
● Vent & air cond.plants has a parent site reference (siteRef) to Building.