Data Group
The following describes the historical data group settings specific to the FactoryTalk View Data Agent Historian SE connector.
Group Types
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For FactoryTalk View SE Data Agent Data File(s) the following group types are available:
Summary Values from Server
This group type retrieves summary calculations directly from the historian. The following calculations are available:
Average
Cumulative Total
Delta Value
End Value
Interpolated
Linear
Maximum
Time of Maximum
Maximum and Hold
Minimum
Time of Minimum
Minimum and Hold
Range
Sample and Hold
Standard Deviation
Start Value
Raw Total
Raw Average
Average and Hold
Total
Total and Hold
Variance
Summary Values from XLReporter
This group type retrieves sampled values from the historian and performs calculations on those samples for reporting.
By default, summary values are calculated time weighted, and values are propagated based on the last known value. However, to change this so that summary values are calculated strictly on the data returned check use raw values.
Raw Values
This group retrieves all the values logged to the historian between the start and end time specified.
Group Settings
Setup Tab (Summary Values for XLReporter)
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The Retrieval settings define how data is retrieved for the calculations selected for the group. The following settings are available:
Retrieval Mode
This setting defines how data is retrieved from the historian. For FactoryTalk View Data Agent Sampled Values and Raw Values are available.
Sampled Values use interpolated values returned from the historian.
Rate
The interval (in seconds) that sampled values are retrieved from the historian.
Lead Time
The amount of time (in seconds) to retrieve data before the start time.
Filters Tab (Raw Values and Summary Values from XLReporter)
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The Server Filter settings can be used to restrict the amount of raw data returned from the historian.
Time Deadband (seconds)
The minimum amount of time (in seconds) between raw samples. The default is 0 which basically disables this setting.
Value Deadband
When set, if the difference between the previous and current samples is less than this value, the current sample is not returned. The default is 0 which basically disables this setting.
Quality
This defines allowable quality of the values returned. For example, if the report should only show good quality values, set this to Good.
Note
Please note that in a Summary Values from XLReporter group these settings only take affect when the Retrieval Mode is Raw Values.