Troubleshooting: Trend chart is missing data points

Problem

Some transitions are skipped, and corresponding data points do not show on the trend chart.

Cause

The trend object may be polling, and updating with data periodically, rather than on change. For example, if data values change every second, but the refresh rate is set to once per minute, data transitions will be missed.

Solution

On the

General

tab in the

Trend Properties

dialog box, change the chart update mode to

On Change

, or increase the speed of the refresh rate.