Omron NT21 Reference Manual page 195

Graphs
Controls on Display According to Touch Switches
Trend graphs can be displayed in the form shown below, with associated touch
switches to control operations.
These dedicated touch switches can be used for data sampling and display op-
erations.
The relevant functions are performed once only when the touch switches are
pressed. These functions cannot be controlled from the host.
The positions of these touch switches can be set freely on the screen. However,
the display colors, sizes and the marks cannot be changed.
Stop touch switch
Stops data sampling. Updating of the trend graph display is stopped at the
same time.
While sampling is stopped, the stop touch switch is lit.
When the background function is used, pressing the stop touch switch stops
sampling in the background.
When the last data recorded before sampling was stopped is displayed, it is
displayed following the currently displayed graph.
After pressing the
touch switch is pressed to return to a past display and then the
(continue)) touch switch is pressed to restart sampling, past data will not be
displayed and the display of new data will start again.
Example:
Restart (continue) touch switch
Restarts the sampling of data stopped by pressing the stop touch switch.
Updating of the trend graph display is started at the same time.
During sampling, the restart (continue) touch switch is lit.
Display clear (clear display) touch switch
DSP
CLR
Clears the trend graph display. The logging data is not cleared but retained.
Log clear (clear log) touch switch
LOG
CLR
Clears the currently displayed trend graph and that trend graph's logging
data. Other trend graphs will not be cleared. This touch switch is only effec-
tive when using the data logging function.
Previous page (rewind) touch switch
Displays logging data older than that of the currently displayed trend graph.
This touch switch is only effective when using the data logging function.
(stop) touch switch, if the
Section 2-10
(previous page (rewind))
(restart
179