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Operating ProTool/Pro Runtime
6-20
ProTool/Pro Runtime User’s Guide
Release 12/99
Button Function
Start/Stop
update
Interrupts updating of the trend display until the button is
pressed again.
Return to start Jumps back to the start of trend recording.
Scroll back Scrolls back one window width.
Scroll forward Scrolls forward one window width.
Enlarge zoom
area
Extends the trend display horizontally.
Reduce zoom
area
Compresses the trend display horizontally.
Navigation using the keyboard
If no buttons have been configured in the trend display, use the operating unit
keyboard to navigate in the trend display. The precondition for this, however, is that
the configuration supports navigation by means of the keyboard.
Function Function PC OP37/Pro
Panel PC
Return to start Jumps back to the start of trend recording.
Scroll back Scrolls back one window width.
Scroll forward Scrolls forward one window width.
Enlarge zoom
area
Extends the trend display horizontally.
Reduce zoom
area
Compresses the trend display horizontally.
Note
It is not possible to interrupt updating of the trend display by means of the
keyboard.
Display archive data as a trend
If data stored in an archive is displayed in the trend display, it is represented as
history trends, i.e. the trend data is read out of the archive and displayed according
to events. Trends of this kind can be used for power-on processes or temperature
patterns on heating up an oven.
The trend display is not updated when the archive data changes.
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