Programming The Watchdog Timer - Advantech PCM-5864 User Manual

A.1 Programming the watchdog timer
In order to program the watchdog timer, you must write a program
which writes I/O port address 443 (hex). The output data is a value
of time interval. The value range is from 01 (hex) to 3E (hex), and
the related time interval is 1 sec. to 62 sec.
Data
01
02
03
04
3E
After data entry, your program must refresh the watchdog timer by
rewriting the I/O port 443 (hex) while simultaneously setting it.
When you want to disable the watchdog timer, your program
should read I/O port 443 (hex).
90 PCM-5864/E/L User's Manual
Time Interval
1 sec.
2 sec.
3 sec.
4 sec.
.
.
.
62 sec.