Other tab options

Use the Other tab to configure the other retrieval options.

1. In the History version area, click Latest or Original to overwrite the values of a stored tag. For more information on History version, see History Version (wwVersion).

2. In the Rules area, do the following:

   • In the Timestamp list, click the required timestamp value. For more information on the Time stamp rule, see Timestamp Rule (wwTimestampRule).

   • In the Values to include in calculations list, click the data values that you want to include in the result. You can include the following quality rules:

     Good and uncertain quality: To include data values with uncertain quality in calculations.

     Good quality: To exclude data values with uncertain quality from calculations.

     Estimate when values are missing: To use the optimistic quality when the data values are missing.

     Note: The Estimate when values are missing quality rule is applicable only for Integral and Counter retrieval modes.

     Server default: To use the default quality rule specified at the AVEVA Historian level.

     For more information on each option, see Quality Rule (wwQualityRule).

3. In the State retrieval area, do the following:

   • In the State calculation list, click the the state calculation.

   • Select the Specify state check box to set the value of the state. For example, you can specify either a open or close statefor the SteamValve tag.

     Note: The state calculation settings are applicable only to ValueState and RoundTrip retrieval modes.

     For more information on State calculation, see State Calculation (wwStateCalc).

4. In the Transformation list, click the transformations to be applied to the result. You can include the following transformations:

   • No Transformation: If the query does not specify the filter element or if the value is not overridden for the filter element.

   • Remove outliers: To remove outliers from a set of analog points.

   • Convert analog values to discrete: To convert value streams for any analog tag to discrete value streams.

   • Snap to base value: To force values in a well-defined range around one or more base values to "snap to" that base value.

     For more information on Transformation, see Analog Value Filtering (wwFilter).

5. In the Phantom cycle area, select the Do not include boundary values check box to remove boundary values from the result.

   For more information on Phantom cycle filter, see About "Phantom" Cycles.