Configure which tags to show from a historical trend

A historical trend pen creates a graphical representation of logged data from a specified period. You assign trend pens to the tags that collect historical data.

A historical trend supports up to eight pens.

Note: WindowViewer must be closed. Otherwise, the Pen boxes cannot be selected.

You can select tags from remote history providers, if the providers are configured. For information about setting up a remote history provider, see Distributing Applications in AVEVA™ InTouch HMI Application Deployment.

Note: You can also configure a IndustrialSQL Server history provider to visualize historical trend data. For more versatility and other charting options, use the ActiveFactory trend tools to create trends with InTouch historical data saved to a IndustrialSQL Server database.

Configure which tags to display from a historical trend

1. Double-click the trend object in the window.

   The Historical Trend Configuration dialog box appears.

   

2. In the Historical Tag box, type the tag that you want to use for the trend.

   The tag must be defined as a Hist Trend type. You must assign a different Hist Trend tag to each historical trend in an InTouch application.

   If the tag you enter is not currently defined in the Tagname Dictionary, a dialog box appears and asks if you want to create a tag. If you select OK to define a tag, the Tagname Dictionary dialog box appears. This tag does not support 128 characters.

3. In the Tagname area, specify the name of an existing local or remote tag in one or more Pen boxes.

4. To assign an existing local or remote tag directly, select a Pen box and type the name of the tag.

5. To browse to the tag to assign:

   1. Double-click in a Pen box. The List of Providers dialog box appears.

      

   2. Select the tag provider you want to use for the pen.

   3. Select OK to show a dialog box listing the tags for the selected provider.

   4. Double-click on a tag from the list to select it.

6. Double-click the color box next to each pen assigned a tag to show the color palette. Select the color for the pen.

7. In the Width box, type the line width in pixels for each pen shown in the trend.

8. Repeat steps 3 to 7 for each tag that you want to assign to a historical trend pen.

9. Select the Allow runtime changes checkbox to allow an operator to configure a historical trend while the application is running.

   For more information about updating a historical trend during run time, see Change the trend configuration at run time.