This ObjectType defines diagnostic information about the sessions of the OPC UA Server. This ObjectType is formally defined in Table 12.

Table 12 – SessionsDiagnosticsSummaryType definition

Attribute		Value
BrowseName		SessionsDiagnosticsSummaryType
IsAbstract		False
References	NodeClass		BrowseName	DataType / TypeDefinition	ModellingRule
Subtype of the BaseObjectType defined in 6.2
HasComponent	Variable		SessionDiagnosticsArray	SessionDiagnosticsDataType[] SessionDiagnosticsArrayType	Mandatory
HasComponent	Variable		SessionSecurityDiagnosticsArray	SessionSecurityDiagnosticsDataType[] SessionSecurityDiagnosticsArrayType	Mandatory
HasComponent	Object		<ClientName>	-- SessionDiagnosticsObjectType	OptionalPlaceholder
Conformance Units
Base Info ServerType

SessionDiagnosticsArray provides an array with an entry for each session in the Server having general diagnostic information about a session.

SessionSecurityDiagnosticsArray provides an array with an entry for each active session in the Server having security-related diagnostic information about a session. Since this information is security-related, it should not be made accessible to all users, but only to authorised users over encrypted channels.

For each session of the Server, this Object also provides an Object representing the session, indicated by <ClientName>. The BrowseName could be derived from the sessionName defined in the CreateSession Service (OPC 10000-4) or some other server-specific mechanisms. It is of the ObjectType SessionDiagnosticsObjectType, as defined in 6.3.5.