Change the Scale of a Trend Chart

About this task

By default, depending on the minimum and maximum tag values plotted in a trend chart, the upper scale and lower scale of the y-axis are considered. You can, however, choose to enter these scales manually.

Procedure

  1. In the trend chart, select the drop-down list box that is labelled after the tag name, and then select Edit.
    The Chart Editor window appears.
  2. For the tag selected in the Select Series field, switch the Auto Scale toggle.
    The Min and Max fields appear.
  3. Enter the lower scale and upper scale values in the Min and Max field respectively, and then select OK.
    The scale of the trend chart is changed.