Advantech PCM-9570/S 2006957006 5th Edition - Manual (Page 91)

Appendix A Programming the Watchdog Timer 79
The following example shows how you might program the watchdog
timer in BASIC:
10 REM Watchdog timer example program
20 OUT &H443, data REM Start and restart the
watchdog
30 GOSUB 1000 REM Your application task #1
40 OUT &H443, data REM Reset the timer
50 GOSUB 2000 REM Your application task #2
60 OUT &H443, data REM Reset the timer
70 X=INP (&H443) REM Disable the watchdog
timer
80 END
1000 REM Subroutine #1, you application task
.
.
.
1070 RETURN
2000 REM Subroutine #2, you application task
.
.
.
2090 RETURN