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- Direct_digital_control abstract "Direct digital control (DDC) is the automated control of a condition or process by a digital device (computer). DDC is considered by many to be a more modern, granular and responsive update to older HVAC control systems based upon PLC technologies. In those older PLC based systems, each zone was self-sufficient and contained all of the instrumentation and control elements needed to consider analog and digital inputs and then take actions according to rules. The complexity came from the desire to expand these 'zones' from a few dozen points and a handful of controlled elements to much broader building-wide systems. Connecting PLCs together becomes complex, and the creation of rules which would be loaded individually into each PLC impractical.DDC on the other hand takes a more centralized network-oriented approach. All instrumentation is gathered by various analog and digital converters which use the network to transport these signals to the central controller. The centralized computer then follows all of its production rules (which may incorporate sense points anywhere in the structure) and causes actions to be sent via the same network to valves, actuators, and other HVAC components that can be adjusted.".
- Direct_digital_control wikiPageExternalLink www.ddc-online.org.
- Direct_digital_control wikiPageExternalLink www.ddctalk.com.
- Direct_digital_control wikiPageExternalLink role-ddc-systems-building-commissioning-386.html.
- Direct_digital_control wikiPageID "4354735".
- Direct_digital_control wikiPageLength "6303".
- Direct_digital_control wikiPageOutDegree "20".
- Direct_digital_control wikiPageRevisionID "683159623".
- Direct_digital_control wikiPageWikiLink Analog_signal.
- Direct_digital_control wikiPageWikiLink Building_automation.
- Direct_digital_control wikiPageWikiLink Category:Building_engineering.
- Direct_digital_control wikiPageWikiLink Category:Heating,_ventilating,_and_air_conditioning.
- Direct_digital_control wikiPageWikiLink Digital_data.
- Direct_digital_control wikiPageWikiLink Fieldbus.
- Direct_digital_control wikiPageWikiLink GE_Fanuc_Intelligent_Platforms.
- Direct_digital_control wikiPageWikiLink GE_Intelligent_Platforms.
- Direct_digital_control wikiPageWikiLink HVAC.
- Direct_digital_control wikiPageWikiLink Human–machine_interface.
- Direct_digital_control wikiPageWikiLink Industrial_control_system.
- Direct_digital_control wikiPageWikiLink Industrial_control_systems.
- Direct_digital_control wikiPageWikiLink Industrial_safety_system.
- Direct_digital_control wikiPageWikiLink Industrial_safety_systems.
- Direct_digital_control wikiPageWikiLink Midac.
- Direct_digital_control wikiPageWikiLink Parallel_computing.
- Direct_digital_control wikiPageWikiLink Programmable_logic_controller.
- Direct_digital_control wikiPageWikiLink SCADA.
- Direct_digital_control wikiPageWikiLink Safety_instrumented_system.
- Direct_digital_control wikiPageWikiLink Setpoint_(control_system).
- Direct_digital_control wikiPageWikiLink University_of_Melbourne.
- Direct_digital_control wikiPageWikiLink User_interface.
- Direct_digital_control wikiPageWikiLinkText "DDC".
- Direct_digital_control wikiPageWikiLinkText "Direct digital control".
- Direct_digital_control wikiPageWikiLinkText "direct control".
- Direct_digital_control wikiPageWikiLinkText "direct digital control".
- Direct_digital_control hasPhotoCollection Direct_digital_control.
- Direct_digital_control wikiPageUsesTemplate Template:Lead_rewrite.
- Direct_digital_control wikiPageUsesTemplate Template:Refimprove.
- Direct_digital_control subject Category:Building_engineering.
- Direct_digital_control subject Category:Heating,_ventilating,_and_air_conditioning.
- Direct_digital_control hypernym Control.
- Direct_digital_control type Article.
- Direct_digital_control type Place.
- Direct_digital_control type Article.
- Direct_digital_control type Discipline.
- Direct_digital_control type Occupation.
- Direct_digital_control type Page.
- Direct_digital_control comment "Direct digital control (DDC) is the automated control of a condition or process by a digital device (computer). DDC is considered by many to be a more modern, granular and responsive update to older HVAC control systems based upon PLC technologies. In those older PLC based systems, each zone was self-sufficient and contained all of the instrumentation and control elements needed to consider analog and digital inputs and then take actions according to rules.".
- Direct_digital_control label "Direct digital control".
- Direct_digital_control sameAs Direct_Digital_Control_(Regelungstechnisches_Verfahren).
- Direct_digital_control sameAs System_sterowania_bezpośredniego.
- Direct_digital_control sameAs m.0byt8n.
- Direct_digital_control sameAs Direkt_dijital_kontrol.
- Direct_digital_control sameAs Q1128138.
- Direct_digital_control sameAs Q1128138.
- Direct_digital_control wasDerivedFrom Direct_digital_control?oldid=683159623.
- Direct_digital_control isPrimaryTopicOf Direct_digital_control.