Boser HS-6010, Руководство пользователя, Страница: 18 / 37

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2.12 Watch-Dog Timer
There are three access cycles of Watch-Dog Timer as Enable,
Refresh and Disable. The Enable cycle should proceed by READ
PORT 443H. The Disable cycle should proceed by READ PORT
043H. A continue Enable cycle after a first Enable cycle means
Refresh.
Once if the Enable cycle activity, a Refresh cycle is request before the
time-out period for restart counting the WDT Timer's period.
Otherwise, it will assume that the program operation is abnormal when
the time counting over the period preset of WDT Timer. A System
Reset signal to start again or a NMI cycle to the CPU comes if over.
The JP5 is using for select the active function of watch-dog timer in
disable the watch-dog timer, or presetting the watch-dog timer activity
at the reset trigger, or presetting the watch-dog timer activity at the
NMI trigger.
??
JP5 : Watch-Dog Active Type Setting
JP5 DESCRIPTION
*1-2 System Reset
2-3 Active NMI
OFF disable Watch-dog timer
??
JP6 : WDT Time - Out Period
PERIOD 1-2 3-4 5-6 7-8
*1 sec OFF OFF ON OFF
2 sec OFF OFF ON ON
10 sec OFF ON OFF OFF
20 sec OFF ON OFF ON
110 sec ON OFF OFF OFF
220 sec ON OFF OFF ON