vocabulary:
  name: Siemens Technology Vocabulary
  description: >-
    Domain vocabulary covering Siemens' broad technology portfolio including
    building automation, industrial IoT, electrification, digital manufacturing,
    and smart infrastructure APIs.
  version: '1.0'
  created: '2026-05-02'
  provider: Siemens

terms:
  - term: Building X
    definition: >-
      Siemens' open building technology ecosystem that provides a cloud-native
      platform with standardized APIs for integrating building automation systems,
      energy management, and smart building applications from multiple vendors.
    synonyms:
      - Building X openness
      - Siemens smart building platform

  - term: Data Point
    definition: >-
      An individual addressable element in a building automation system
      representing a sensor reading (input), control setpoint (output), or
      actuator state. Points follow BACnet object type classifications including
      analog input/output and binary input/output.
    synonyms:
      - BAS point
      - BACnet object
      - control point

  - term: BACnet
    definition: >-
      Building Automation and Control Networks — the dominant communication
      protocol for building automation systems standardized as ANSI/ASHRAE 135.
      Siemens building systems use BACnet for device communication and define
      data points following BACnet object type conventions.
    synonyms:
      - Building Automation and Control Networks
      - ASHRAE 135

  - term: Air Handling Unit (AHU)
    definition: >-
      A mechanical device that conditions and distributes air throughout a
      building's HVAC system. AHUs contain components such as fans, heating/
      cooling coils, filters, and dampers. They are a primary source of
      building automation data points including temperatures, pressures, and
      airflow rates.
    synonyms:
      - AHU
      - air handler

  - term: Aspect (MindSphere)
    definition: >-
      In the MindSphere context, a logical grouping of measurement variables
      from an industrial asset that share a functional relationship (e.g.,
      "ElectricalData" with voltage, current, and power variables).

  - term: Digital Twin
    definition: >-
      A digital replica of a physical asset, system, or process that enables
      monitoring, simulation, and optimization. Siemens creates digital twins
      for both building systems (via Building X) and industrial equipment
      (via MindSphere/Insights Hub).
    synonyms:
      - digital replica
      - asset twin

  - term: Insights Hub
    definition: >-
      The current branding for Siemens' Industrial IoT as a Service platform,
      formerly known as MindSphere. Provides APIs for asset management, time
      series data, event management, and analytics for industrial equipment
      and manufacturing processes.
    synonyms:
      - MindSphere
      - Siemens Industrial IoT

  - term: OData
    definition: >-
      Open Data Protocol — an OASIS standard for REST-based data APIs. Siemens
      Building X and several other Siemens APIs use OData query conventions
      including $filter, $skip, $top, and $select for data access.
    synonyms:
      - Open Data Protocol
      - OASIS OData

  - term: Priority Array
    definition: >-
      A BACnet concept where up to 16 priority levels can command a writable
      data point, with lower numeric priority values taking precedence. Priority
      1 is highest; priority 16 (manual operator override) is lowest. The
      present value is determined by the highest active priority.
    related:
      - Data Point
      - BACnet

  - term: Trend Data
    definition: >-
      Historical time-stamped records of building data point values stored
      in the building management system. Trend data enables energy analysis,
      fault detection, and performance optimization by reviewing equipment
      behavior over time.
    synonyms:
      - trend log
      - historical data

tags:
  - Building Automation
  - Smart Buildings
  - Industrial IoT
  - Electrification
  - Manufacturing
  - Digital Twin
  - HVAC
  - Energy Management
  - BACnet
  - Industry 4.0