Access Trend Charts
About this task
Note: The following features are currently not available for live charts:
- Print preview and print
- Export
- Filter
- Zoom
- Range for y-axis
- Multifield and string tags
You cannot modify the live charts. The chart is autorefreshed with the x-axis duration set to 60 minutes..
Note: You can change the Sampling Mode of Trend Charts by changing
the value of the samplingMode property in
app.properties.json. The location of this file
depends on your installation.
- Enterprise installation:<Install Directory>/PlantApplicationsDocker/plantapps-web-docker/mnt/configfiles/process-analyzer-app/prod/{{appVersion}}/<appname>.yml
- Standard installation: <Install Directory>\config-rep\process-analyzer-app\prod\{{appVersion}}\<appname>.yml
Procedure
- In the Analysis page, select
to access the historical chart for a live chart.Note: Live mode is not supported when the batches with specific times are displayed along with Tags, Variables, and KPIs. You must edit the chart and select Use Time to reset before you switch to Live mode. For more information, refer to the Modify Charts topic. - Select
for a chart to access a menu containing Chart Info and to Show Statistics options. - Select Chart Info to access the Chart Type, Start and End date and time, and Tags information.
- Select Show Statistics to access the Name of the trended tags, First Raw Value, Last Raw Value, Minimum Value, Maximum Value, Count, Raw Total, Raw Average, and Raw Standard Deviation.
- Select Remove Chart or select
to delete the respective chart.
If you add more than two tags, variables, or KPIs to a chart for analysis, a common y-axis appears in the chart. The y-axis is automatically scaled based on the minimum and maximum values of all the individual y-axes. - Optional: Select
to zoom backwards, or select 
to zoom forward for the saved zooms in a session.In a Historical chart, you can drag and select a time frame to analyze. You can zoom forward multiple times. The forward and backward zooms are saved for a session or until the zoom is reset. For example, if the trend chart represents a longer time frame of one month, you can zoom in to a shorter time frame for a week, and further zoom in to specific hours or minutes of a day to analyze the trend data.Note: When no data is available for a time window, or if the time window spans less than one second, you may not see any information.Select
to reset the zoom to default.You can also select one of the following options in the Zoom type list to refine your selection:- XY-Axis: To zoom both x- and y-axes in the Historical chart.
- X-Axis: To zoom only x-axis in the Historical chart.
- Y-Axis: To zoom only y-axis in the Historical chart.
- Optional: Use one of the following layout options.
Layout Options Description Multi-select mode Selects multiple trend charts or events from the session. After selecting the required trend charts and events you can perform the following actions: - After you select multi-select mode, you can select
to view one or two trend charts in full-screen mode. You can select 
to exit full-screen mode. - You can clear the Multi-select mode check box to return to the default mode.
You cannot modify the charts in multi-select mode.
Normal View Displays the default view. Column View Displays the trend charts and batches information in two columns. Stacked View Displays the trend charts and batches information as stacked rows. 
(Show / Hide Chart controls)Enables the following behaviors: - When the chart controls for the batches are not available, the chart controls are disabled.
- When the chart controls for the batches appear, you can select the icon to hide chart controls.
- When the chart controls for the batches are hidden, you can select the icon to show chart controls.
(Export Trended Data)Downloads trended data (both good and bad qualities data) to a .csv file. Note: When the chart appears blank; that is, the plotted variable has no data, if you export trended data, dummy data of the type bad quality appears in the .csv file.
(Export Raw Data)Downloads raw data (only good quality data) as a .csv file. Note: When the chart appears blank; that is, the plotted variable has no data, if you export raw data, dummy data of the type bad quality appears in the .csv file.
(Preview Page)Previews available trend charts for printing. You can select the Print Page button to print the charts. (Full screen)Displays the selected charts in full-screen mode. Select to exit full-screen mode.Note: You cannot use the keyboard shortcuts like F11 (to run in full-screen mode) or Esc (to exist full-screen mode).
(Clear Analysis)Deletes the trend charts and event information from the current session. - After you select multi-select mode, you can select