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- OPC_Historical_Data_Access abstract "This group of standards, created by the OPC Foundation, provides COM specifications for communicating data from devices and applications that provide historical data, such as databases. The specifications provides for access to raw, interpolated and aggregate data (data with calculations).OPC Historical Data Access, also known as OPC HDA, is used to exchange archived process data. This is in contrast to the OPC Data Access (OPC DA) specification that deals with real-time data. OPC technology is based on client / server architecture. Therefore, an OPC client, such as a trending application or spreadsheet, can retrieve data from an OPC compliant data source, such as a historian, using OPC HDA.Similar to the OPC Data Access specification, OPC Historical Data Access also uses Microsoft's DCOM to transport data. DCOM also provides OPC HDA with full security features such as user authentication and authorization, as well as communication encryption services. OPC HDA Clients and Servers can reside on separate PCs, even if they are separated by a firewall. To do this, system integrators must configure DCOM properly as well as open ports in the firewall. If using the Windows firewall, users only need to open a single port.".
- OPC_Historical_Data_Access wikiPageExternalLink www.opcfoundation.org.
- OPC_Historical_Data_Access wikiPageID "2784419".
- OPC_Historical_Data_Access wikiPageLength "1673".
- OPC_Historical_Data_Access wikiPageOutDegree "14".
- OPC_Historical_Data_Access wikiPageRevisionID "544142727".
- OPC_Historical_Data_Access wikiPageWikiLink Aggregate_data.
- OPC_Historical_Data_Access wikiPageWikiLink Category:Automation.
- OPC_Historical_Data_Access wikiPageWikiLink Category:Component-based_software_engineering.
- OPC_Historical_Data_Access wikiPageWikiLink Category:Computer_standards.
- OPC_Historical_Data_Access wikiPageWikiLink Component_Object_Model.
- OPC_Historical_Data_Access wikiPageWikiLink Distributed_Component_Object_Model.
- OPC_Historical_Data_Access wikiPageWikiLink Interpolated.
- OPC_Historical_Data_Access wikiPageWikiLink Interpolation.
- OPC_Historical_Data_Access wikiPageWikiLink OLE_for_process_control.
- OPC_Historical_Data_Access wikiPageWikiLink OPC_Data_Access.
- OPC_Historical_Data_Access wikiPageWikiLink OPC_Foundation.
- OPC_Historical_Data_Access wikiPageWikiLink Open_Platform_Communications.
- OPC_Historical_Data_Access wikiPageWikiLinkText "OPC HDA (Historical Data Access)".
- OPC_Historical_Data_Access wikiPageWikiLinkText "OPC Historical Data Access".
- OPC_Historical_Data_Access hasPhotoCollection OPC_Historical_Data_Access.
- OPC_Historical_Data_Access wikiPageUsesTemplate Template:List_of_Automation_Protocols.
- OPC_Historical_Data_Access wikiPageUsesTemplate Template:Standard-stub.
- OPC_Historical_Data_Access subject Category:Automation.
- OPC_Historical_Data_Access subject Category:Component-based_software_engineering.
- OPC_Historical_Data_Access subject Category:Computer_standards.
- OPC_Historical_Data_Access type Component.
- OPC_Historical_Data_Access comment "This group of standards, created by the OPC Foundation, provides COM specifications for communicating data from devices and applications that provide historical data, such as databases. The specifications provides for access to raw, interpolated and aggregate data (data with calculations).OPC Historical Data Access, also known as OPC HDA, is used to exchange archived process data. This is in contrast to the OPC Data Access (OPC DA) specification that deals with real-time data.".
- OPC_Historical_Data_Access label "OPC Historical Data Access".
- OPC_Historical_Data_Access sameAs OPC_Historical_Data_Access.
- OPC_Historical_Data_Access sameAs m.082jl6.
- OPC_Historical_Data_Access sameAs Q7072812.
- OPC_Historical_Data_Access sameAs Q7072812.
- OPC_Historical_Data_Access wasDerivedFrom OPC_Historical_Data_Access?oldid=544142727.
- OPC_Historical_Data_Access isPrimaryTopicOf OPC_Historical_Data_Access.