Columns tab options

Use the Columns tab to configure the columns that are returned for the results.

Options are as follows:

• Tag Name: The name of the tag within the AVEVA Historian server. If the data values are coming from Application Server, the attribute reference is shown as the tag name. You can also choose to show the hierarchical name along with the attribute reference. For more information, see ArchestrA Naming Conventions.

• Start Datetime: The start time of the retrieval cycle.

• End Datetime: The end time of the retrieval cycle.

• OPCQuality: The quality value received from the data source.

• Percent Good: The percentage of rows with good quality in relation to the total number of rows in the retrieval cycle.

• Average: The time weighted average value of the retrieval cycle.

• StdDev: The time weighted standard deviation value of the retrieval cycle.

• Integral: The area under the value curve of the retrieval cycle.

• Value Count: The number of values contributing to the summary.

• wwCycleCount: The number of retrieval cycles (sub-intervals) for the specified time period. For more information, see Cycle Count (X Values over Equal Time Intervals) (wwCycleCount).

• wwRetrievalMode: The processing of retrieved data is specified before it is returned to the client. For more information, see Understanding Retrieval Modes.

• wwResolution: The sampling rate, in milliseconds, for retrieving the data in cyclic mode. For more information, see "Resolution (Values Spaced Every X ms) (wwResolution).

• SliceBy: The name of the slice by tag.

• SliceBy Value: The value of the slice by tag.

• Select Tags: Click to select one or more tags for which data will be retrieved.

• Select SliceBy Tag: Click to select the slice by tag.