Contec IPC-BX/M560, Руководство пользователя

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Functions of Components
IPC-BX/M560(PCW)
56
Usage
Set SW1
Power on
Unprotect
Set event output
control
YES
* WDT: Watchdog timer
Execute WDT stop
instruction
Application
Start and clear WDT
Set timer value
Time value
changed?
Output 0A5h to the 013Ch port to unprotect.
Read the 0139h port, stop the watchdog timer,
and turn off the alarm output.
Output setting data to the 013Ah port.
Output data (undefined) to the 0139H port starts
the watchdog timer and execute the out instruction
to the same port to clear the watchdog timer.
The watchdog timer must be stopped before the
timer value can be changed during operation.
...
...
...
...
...
Output data to the 013Bh port to set the event
output mode and external alarm.
...
NO
Figure 5.7. sing the Watchdog Timer