Set chart options

You can set a number of general chart options, including the trend background color, freeze options, refresh interval, and retrieval options.

To set the chart options

1. In the Industrial Graphic Editor, double-click the Trend Client. The Edit Animations dialog box appears.

2. Click Options. The options information appears in the right pane.

   

3. Select the Show pen selector check box to show the legend or list of pens at the bottom the trend.

4. Click Trend background color to configure the main color of the background of the entire chart area.

5. Select Show run-time context menu to show the context menu when you right-click the trend at run time.

6. Set Decimal Places to the number of decimal places to use in the trend.

7. Set Labels to All to display the chart label, X and Y axis scales, and cursor information, or None to suppress the labels in the plot area

8. Select Allow freeze/unfreeze trend update to enable Freeze on the run-time context menu so you can freeze the trend chart from live updates. When this option is selected (the default), you can also set the freeze duration. The freeze duration determines how long the chart remains frozen when you freeze the chart at run time. After the freeze time has elapsed, the chart resumes the live updates. If the freeze duration is set to 0, you must manually unfreeze the chart.

9. Set Refresh interval to the number of seconds between chart updates. You can optionally select Refresh entire chart to refresh the entire chart after the number of refresh intervals you specify.

   Note: Optimal performance for the Trend Client can be observed when, the default values for Refresh Interval is set at 1 second and Refresh entire chart every is set at 100 intervals. The Trend Client is refreshed as a combination of both values and if the refresh rate is faster than the rate at which data is retrieved, data may not be plotted correctly.

10. Set Retrieval Mode to Full or Cyclic. Full retrieval mode returns all stored data points for a tag within a trend period. Cyclic retrieval mode returns stored data at equal length intervals within a trend period. For more information, see Appendix A, "Understanding Data Retrieval".

    Note: Retrieval mode is applicable for tags from Historian. The value set here is the default setting for a pen; however, you can override it by setting the pen retrieval mode to any value other than application setting.

11. Set Trend Duration. You can set the trend duration for a maximum period of 2 years. All trend durations are calculated backward from an end date of the current time (except for the options "Yesterday" and "Previous Hour"). You can pick a duration from the list or type a specific duration in the list box. The time notation is [DD] HH:MM:SS.fff, where DD=days, HH=hours, MM=minutes, SS=seconds, and fff=milliseconds. To change a value in the duration list box, use the arrow keys on your keyboard to position the mouse cursor to the left of the number you want to change, and then type the new number. You can only change the duration and not the start and end time.

12. Click OK.