The TTDResultManagementType provides mechanisms to access results generated by the TTD. Basically this is a subtype of the 4:ResultManagementType enforcing the implementation of different methods and objects for the result transfer mechanisms that should be used on the TTD. In general, we want to accomplish the following tasks:
- Results can be stored in a local result store of the TTD
- Data results or ResultIds can be obtained using the 4:Results folder and the 4:GetResultById method
- Data results or ResultIds can be obtained using the 4:ResultReadyEvent
- File results can be obtained using the 4:ResultTransfer (4:ResultTransferType) and its 0:GenerateFileForRead method
The TTDResultManagementType is formally defined in Table 35.
Table 35 – TTDResultManagementType Definition
|
Attribute |
Value |
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|
BrowseName |
TTDResultManagementType |
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|
IsAbstract |
False |
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|
References |
Node Class |
BrowseName |
DataType |
TypeDefinition |
Other |
|
Subtype of the 4:ResultManagementType defined in OPC 40001-101 |
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|
0:HasComponent |
Object |
4:Results |
|
0:FolderType |
M |
|
0:HasComponent |
Object |
4:ResultTransfer |
|
4:ResultTransferType |
M |
|
0:HasComponent |
Method |
4:GetResultById |
|
|
M |
|
0:GeneratesEvent |
ObjectType |
TTDResultReadyEventType |
|
|
|
|
Conformance Units |
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|
TTD_TTDResultManagementType |
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|
|
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4:Results is a folder that is used to organize available results of the system. It is supposed to store variables of the 4:TTDResultType. A 4:ResultType contains the 4:ResultMetaData (see subtype TTDResultMetaDataType) used to identify the result and optional an data based 4:ResultContent or 4:ReducedResultContent. The ResultContent may be of any DataType but typically it is a field of StatisticResultContent defined in this specification or a 0:ByteString of any raw data.
4:ResultTransfer is used to transfer the content of a result by a temporary file transfer. The file that is to be transferred is identified by its ResultId.
4:GetResultById is used to retrieve a result (4:ResultDataType) from the TTD.
Table 36 – TTDResultManagementType Additional Subcomponents
|
BrowsePath |
References |
NodeClass |
BrowseName |
DataType |
TypeDefinition |
Others |
|
4:Results |
0:HasComponent |
Variable |
4:<ResultVariable> |
4:ResultDataType |
TTDResultType |
OP |