This specification defines a manner of exposing the configuration associated with a HistoricalNode (both HistoricalDataNode and HistoricalEventNode), but this configuration is not required for all nodes. If the configuration of individual nodes is not provided for all nodes, the Historian shall expose a default instance under the Server Object. If HistoricalDataNodes exist without a referenced configuration, an Object with a BrowseName of “DefaultHAConfiguration” shall be exposed. If HistoricalEventNodes exist without configuration, an object with a BrowseName of “DefaultHEConfiguration” shall be exposed. For any Node that does not have a referenced historical configuration but does support history, the default appropriate configuration shall be applied (DefaultHAConfiguration for Variables, DefaultHEConfiguration for Objects).
A Client shall assume the default configuration for any HistoricalNode that does not reference a historical configuration.
The DefaultHAConfiguration object is defined in Table 14.
Table 14 - DefaultHAConfiguration definition
|
Attribute |
Value |
|||
|
BrowseName |
DefaultHAConfiguration |
|||
|
|
|
|||
|
References |
NodeClass |
BrowseName |
DataType |
TypeDefinition |
|
OrganizedBy by the Server Object defined in OPC 10000-5 |
||||
|
HasTypeDefinition |
ObjectType |
HistoricalDataConfigurationType |
Defined in 5.2.2 |
|
|
ConformanceUnits |
||||
|
Historical Access Default HA Configuration |
||||
The DefaultHEConfiguration object is defined inTable 15.
Table 15 - DefaultHEConfiguration definition
|
Attribute |
Value |
|||
|
BrowseName |
DefaultHEConfiguration |
|||
|
|
|
|||
|
References |
NodeClass |
BrowseName |
DataType |
TypeDefinition |
|
OrganizedBy by the Server Object defined in OPC 10000-5 |
||||
|
HasTypeDefinition |
ObjectType |
HistoricalEventConfigurationType |
Defined in 5.4.3 |
|
|
ConformanceUnits |
||||
|
Historical Access Default HE Configuration |
||||