User’s Manual
WIN Enterprises, Inc.
Sep., 2014
40
Appendix A: Watchdog Timer Programming Guide
The PL-80500 provides a watchdog timer that resets the board or enable LAN
bypass mode. This function ensures greater system reliability in industrial
stand-alone and unmanned environments.
In order to enable the watchdog timer, you have to output the value of the
watchdog timer interval to the controller. The value range is from 01H to FFH,
and the related time watchdog timer interval is 1 sec to 255 sec.
Data
Timer interval
00
Disabled
01
1 sec
02
2 sec
*
*
*
*
FF
255 sec
If you want to disable the watchdog timer, just set the timer interval value to
00H.
After setting the timer interval value, the watchdog timer begins to count down.
You have to refresh the watchdog timer, so that the watchdog timer will return
to its initial value; otherwise, your system will reset after a time-out. WIN
provides the sample code for customer to program the watchdog timer.
