User manual

TPC-66/68 Series User Manual 24
Watchdog
Watchdog is a function to let the device automatically reset if a program
does not respond in time. This prevents system crashes and hangs to stop
your critical applications, as the watchdog will automatically restart the
machine when required.
Set the response time through the combo box as shown below. The timer
is the period that the watchdog will wait for a response.
Figure 4.7: Watchdog Setting
Only when you select a time span and enable the watchdog, will the
response time be effective. When the watchdog is enabled and the "Test"
button is clicked, the NO resetting signal will be periodically sent to the
watchdog hardware onboard. The watchdog will suppose the machine to
be deadlocked and REBOOT it after the watchdog response time. If the
machine reboots as expected after the watchdog response time, the watch-
dog is proved to be working properly.