Instruction manual

Chapter 2 Installation 31
The following steps illustrate how you might program the watch-
dog timer.
1. Write to I/O port 443 (Hex) and designate a time-out interval.
This will enable the watchdog and set up its time-out interval.
2. Write to I/O port 043 (Hex) and any random value. This will in
turn disable the watchdog timer.
The watchdog timer-out interval can be set at 16 levels between 2
and 32 seconds. The following table shows the Hex values for the
appropriate time-out intervals:
Watchdog timer delay values
Delay time Value (Hex) Delay time Value (Hex)
0~2 F 16~18 7
2~4 E 18~20 6