5.5.2 External Historical Event Node
Instances of this ObjectType are used in a Historian to indicate the historical collection related details of an event stream that is being sourced from another OPC UA Server. An instance of this ObjectType shall include a HasCurrentEvent reference to the remote Server Object that is the source of the Events that are being collected.
| Attribute | Value | ||||
|---|---|---|---|---|---|
| BrowseName | HistoricalExternalEventSourceType | ||||
| IsAbstract | False | ||||
| References | NodeClass | BrowseName | DataType | TypeDefinition | ModellingRule |
|---|---|---|---|---|---|
| HasProperty | Variable | Server | String | PropertyType | Optional |
| HasProperty | Variable | EndpointUrl | String | PropertyType | Optional |
| HasProperty | Variable | SecurityMode | MessageSecurityMode | PropertyType | Optional |
| HasProperty | Variable | SecurityPolicyUri | String | PropertyType | Optional |
| HasProperty | Variable | IdentityTokenPolicy | UserTokenPolicy | PropertyType | Optional |
| HasProperty | Variable | TransportProfileUri | String | PropertyType | Optional |
| HasProperty | Variable | HistoricalEventFilter | EventFilter | PropertyType | Mandatory |
| ConformanceUnits | |||||
|---|---|---|---|---|---|
| Historical Access External Event Source |
All instances of HistoricalExternalEventSourceType shall set the Object Attributes bits as described in 5.4.4.
An instance of this ObjectType can also have a HasHistoricalConfiguration to an instance of HistoricalEventConfigurationType, if it does not then the Server level default configuration shall apply.
The following optional information can be provided to describe how the Historian connects to receive the event stream:
Server is a URI that represents a logical name for a Server that is the source of the event stream (see OPC 10000-4 ServerUri for additional details).
EndpointUrl is a String that provides the URL for the Endpoint used for the connection.
SecurityMode is a MessageSecurityMode enumeration that describes the type of security to apply to the messages in this connection.
SecurityPolicyUri a string that describes the URI for SecurityPolicy used when securing messages for this connection.
IdentityTokenPolicy is the type of UserIdentity token that is used for this connection.
TransportProfileUri is a string that describes the URI of the transport profile use for this connection.
HistoricalEventFilter is mandatory and is defined in 5.4.2