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28 TPC-1260 User's Manual
Figure 4.2-2 Screen saver setting
When the screen saver setting is done, tap “OK” to accept the
settings just made, “Cancel” to discard or “Save” to permanently save
the settings to the registry.
Notice: Please be careful when selecting “Save”. This
command will overwrite all registry data—not only the
screen saving settings.
4.2.3 Watchdog timer
It is important in industrial applications that the control systems are
rarely down, or are capable of self-reset if they are halted somehow.
The watchdog timer is therefore used in the TPC-1260 to provide
automatic reset. There is a timer inside the watchdog timer. The TPC-
1260 should clear the timer within a pre-set time interval periodically. If
the timer is not cleared, the timer would assume the system to be
halted and generate a reset.
The watchdog timer in the TPC-1260 provides a fixed time interval: 1.6
seconds. As mentioned in the section 4.2.2: when the system boots,
there is an icon “S” on the status bar. Tap this icon by a stylus for the
setting window.
Select whichever time interval required, and tap one of the buttons:
“OK”, “Cancel” or “Save”.
Notice: Please be careful before selecting “Save”. This
command will overwrite all registry data—not only the
watchdog timer settings.