Rockwell Automation Discrete Machine Performance Solution - Manual (Page 74)

D ISCRETE M ACHINE P ERFORMANCE S OLUTION U SER ’ S G UIDE
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Process Variable trends
This display shows the current value of all process variables configured for the workcell
and a trend of those values.
The description of each process variable configured for the workcell is shown with its
current actual value. Each value is color coded and a trend chart of all variables is shown
in the grid at the bottom of the display. The chart can be shown as a real-time trend that
automatically updates, or as a historical trend of previous values in a time period selected
from the last 24 hours.
There are several controls to the right of the grid that are used to adjust the displayed grid
information:
„ Modify the actual value limits used for the y-axis by using the entry fields at the top
right and bottom right of the grid.
„ Adjust the length of time depicted in the grid by using the time entry field or the slider
control, both located to the right of the grid. The length of time shown can be adjusted
from 5-300 seconds.
Discrete.book Page 68 Wednesday, December 8, 2004 2:22 PM