For the purposes of this document, the terms and definitions given in OPC 10000-1, OPC 10000-3, and OPC 10000-4, as well as the following apply.

template declaring the content of a DataSet

Note 1to entry:A DataSetClassis used to type DataSetsfor use in several Publishersand for filtering in Subscribers.

data describing the content and semantic of a DataSet

entity receiving DataSetMessagesfrom a Message Oriented Middleware

Note 1 to entry:A DataSetReaderis the component that extracts a DataSetMessagefrom a NetworkMessagereceived from the Message Oriented Middlewareand decodes the DataSetMessageto a DataSetfor further processing in the Subscriber.

entity creating DataSetMessagesfrom DataSetsand publishing them through a Message Oriented Middleware

Note 1 to entry:A DataSetWriterencodes a DataSetto a DataSetMessageand includes the DataSetMessageinto a NetworkMessagefor publishing through a Message Oriented Middleware.

configuration of application-data to be published as DataSet

Note 1to entry: A PublishedDataSetcan be a list of monitored Variablesor an Eventselection.

grouping of security settings and security keys used to access messages from a Publisher

Note 1 to entry:A SecurityGroupis an abstraction that represents the security settings and security keys that can be used to access messages from a Publisher. A SecurityGroupis identified with a unique identifier called the SecurityGroupId. The SecurityGroupIdis unique within the Security Key Service.

configuration for dispatching of received DataSets

Note 1to entry: A SubscribedDataSetcan be a mapping of DataSetfields to Variablesin the Subscriber AddressSpace.