Difference between revisions of "UA Capabilities"

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* [[Robustness All|Robustness]]
 
* [[Robustness All|Robustness]]
 
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* [[UA Base Models|Overview]]
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* [[BaseModels Ovw|Overview]]
* [[UA Data Access|Data Access]]
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* [[DataAccess All|Data Access]]
* [[UA Alarms and Conditions|Alarms and Conditions]]
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* [[AlarmsConditions All|Alarms and Conditions]]
* [[Historical Data Access Capability|Historical Data Access]]
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* [[HistoricalData All|Historical Data Access]]
* [[Historical Event Access Capability|Historical Event Access]]
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* [[HistoricalEvents All|Historical Event Access]]
* [[Programs Capability|Programs]]
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* [[Programs All|Programs]]
* [[Certificate Management Capability|Certificate Management]]
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* [[CertificateMgmt All|Certificate Management]]
* [[Redundancy Support Capability|Redundancy Support]]
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* [[Redundancy All|Redundancy Support]]
 
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* [[Standards Models|Overview]]
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* [[StandardModels Ovw|Overview]]
* [[Device Model Capability|Device Integration Model (DI)]]
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* [[DI All|Device Integration Model (DI)]]
* [[Analyzer Device Capability|Analyzer Device Integration (ADI)]]
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* [[ADI All|Analyzer Device Integration (ADI)]]
* [[Field Device Integration Capability|Field Device Integration (FDI)]]
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* [[FDI All|Field Device Integration (FDI)]]
* [[PLCopen IEC61131-3 Capability|PLCopen Model (IEC61131-3)]]
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* [[PLCopen All|PLCopen Model (IEC61131-3)]]
* [[MTConnect Capability|MTConnect Model]]
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* [[MTConnect All|MTConnect Model]]
* [[ISA-95 Capability|Enterprise-Controlsystem Integration Model (ISA-95)]]
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* [[ISA-95 All|Enterprise-Controlsystem Integration Model (ISA-95)]]
 
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Revision as of 05:54, 2 February 2015

Introduction

OPC UA has been designed for scalability and supports a wide range of application domains, ranging from field level (e.g. devices for measurement or identification, PLCs), to enterprise management support. To achieve these design goals, the OPC UA standard provides a multi-layered architecture as shown in the following figure:

UA Framework.JPG

As illustrated, OPC UA is built on the following Infrastructure:

  • Discovery with allows Clients to find OPC UA Servers, their supported protocols, security policies and other capabilities.
  • Transports which provide capabilities needed to establish a connection and exchange well-formed messages between OPC UA Applications.
  • Information Access which comprises the means to expose an Address Space with arbitrarily rich, object-based Information Models, and the Services to access this information.
  • Security and Robustness, which is a set of features integrated into Transport and Information Access.

Information models are layered on top of this infrastructure. OPC UA specifies a number of base information models (DataAccess – DA, Alarms&Conditions – AC, and more) that define commonly used objects including both real-time and historical data variables and alarms. Idustry standard models inherit from and further specialize the lower layer models they are based upon.


Following is the catalogue of OPC UA Capabilities structured according to its layered architecture.


Infrastructure Information Models
UA Base Models Industry Standard Models