Difference between revisions of "Base Information Models"

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OPC UA specifies a collection of Object, Variable and Data types that are common in multiple application domains. For example, definitions exist for Alarms, Analog Data, State Machine, and File. This collection of UA specified types form the Base OPC UA Information Model: Data Access, Alarms and Conditions, Historical Access, and Programs. Standard types are also defined for Aggregates, used in both processed and historical data retrieval.
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The OPC UA Object Model provides a consistent, integrated set of NodeClasses for representing object-based information models in the AddressSpace. Objects are represented in terms of their Variables, Events and Methods, and their relationships with other Objects. Information models  may be defined by standards organizations, vendors or end-users.
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The "Base Information Models" are specified as part of the OPC UA standard and include Objects that are common in multiple application domains. For example, definitions exist for Alarms, Analog Data, State Machine, and File.
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<br>Data, Alarms and Events, and their history can be integrated into a single OPC UA Server. For example, OPC UA Servers are able to represent a temperature transmitter as an Object that is composed of a temperature value, a set of alarm parameters, and a corresponding set of alarm limits.  
 
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Revision as of 06:51, 13 February 2015

The OPC UA Object Model provides a consistent, integrated set of NodeClasses for representing object-based information models in the AddressSpace. Objects are represented in terms of their Variables, Events and Methods, and their relationships with other Objects. Information models may be defined by standards organizations, vendors or end-users.
The "Base Information Models" are specified as part of the OPC UA standard and include Objects that are common in multiple application domains. For example, definitions exist for Alarms, Analog Data, State Machine, and File.
Data, Alarms and Events, and their history can be integrated into a single OPC UA Server. For example, OPC UA Servers are able to represent a temperature transmitter as an Object that is composed of a temperature value, a set of alarm parameters, and a corresponding set of alarm limits.

UA fw BaseModels.JPG