L-VIS User Manual 241 LOYTEC
Version 6.2 LOYTEC electronics GmbH
To Create Historic Filters
1. Select one or more data points that shall serve as the base data points.
2. Right-click and select the Configure Historic Filters … item in the context menu. As
an alternative, click on of the Historic Filter data point property.
3. The dialog Select Historic Filter opens. Click on to create a new one.
4. In the Create Historic Filter dialog enter a name and optionally a description.
5. To add a new filter function to the list click on the add button . Enter a filter entry
Name and choose the desired period Type. The name will appear with the historic
filter relation and helps identifying it. Depending on the type define the arguments Day
and Time. Select how many samples ago the filter goes back. The most current sample
is ‘0’, the previous one is ‘1’.
6. To duplicate an entry click on the duplicate button . On the duplicate modify the
settings accordingly.
7. For getting the difference of an historic value to the current value check the box Delta
to current.
8. Click on Save Changes and select the created filter template. For each filter entry
defined, a historicFilter property relation is created under the base data point(s).
10.15.2 Managing Historic Filter Resources
Historic filters are stored as template types in the project resources. The configuration
software provides a resource manager which can be used to view, edit, import, and export
historic filter resources. When modifying an historic filter template, all instances which use
it are updated.
Select the command Historic Filters… from the Edit menu to open the resource manager
dialog. Select a filter type and click the edit button to modify it. Use the plus button to
add new filters and the minus button to delete selected filters. Click the duplicate button
to create a duplicate of the selected filter. Click the import button to load historic filters
from disk. When importing, filter definitions of the same name are overwritten. Click the
export button to store current filters to disk.
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