Cloud History Export (nCloudDriver-CloudHistoryExport)
Cloud history exports that are added through the Learn Histories job will have their “last sent to cloud time” set. The time that is used is based on the value entered in the learn job configuration window. When the configuration window comes up, by default the value for this time is populated with "now". If the user does not change this value the exports will be created with a “last sent to cloud time” of “now”. This is because there is no way of knowing anything about the station doing the export, so "now" is the earliest safe time that can be used. History exports added through Discover will not have a “last sent to cloud time” set. There is no constraint on the time (other than that it is stored internally as milliseconds since epoch). For example, you can set your history export to start exporting records at a future date/time, such as starting next week.
For more details, see nCloudDriver-CloudHistoryExportManager.
Figure 50. CloudHistoryExport properties
To access these properties, expand , double-click Local_LogHistory (or any of the discovered history type).
In addition to the standard properties (Status, Enabled, Fault Cause and State), these properties support this component.
| Property | Value | Description |
|---|---|---|
| Last Attempt | Timestamp | Reports the date and time of the last attempted execution. |
| Last Success | Timestamp | Reports the last time the system successfully created a record. |
| Last Failure | Timestamp | Reports the last time the system failed to create a record. |
| History Id | text in two parts: /stationname/historyname | Specifies the history name in the local station’s History space, using two parts: “/<stationName>” and “/<historyName>”. If Discovered, station name is “^” (a character representing the device name of the parent container) and history name reflects the source history name. Typically, you leave both properties at default values, or edit the second (<historyName>) property only. |
| Point Id | text | Specifies the details by which the point is identified. |
| Source Ord | File chooser | Chooses the files for the ORD. |
| Last Sent To Cloud | timestamp | Always present, it is a timestamp of the last history record sent to the cloud. It is used in determining where in the local Niagara history to start from when sending history records to the cloud during batch or individual history data export. |