A: w, Ppendix, Atchdog – NEXCOM NEX 880 User Manual
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NEX 880/890 User Manual
Appendix A: Watchdog Timer
A
ppendix
A: W
Atchdog
t
imer
Start
See “SetupWDT” procedure
#Setup Watchdog Timer Environment
Step 1
Step 2
See “TimeBaseWDT” procedure
#Initial Watchdog Timer
Users can select second or minute
Step 3
See “TimeCountWDT” procedure
#Set Watchdog Timer Time-out Value
Users can set time-out value
Step 4
See ExitSetup procedure
#Exit Setup Environment
End
WDT Programming Guide
NEX 880/890 Watchdog Function Configuration Sequence Description:
c:\>debug [enter]
-o 2e 87 ;Enter the Extended Function Mode
-o 2e 01
-o 2e 55
-o 2e 55
-o 2e 07 ;Logical Device Number Reg
-o 2f 07 ;LDN=7
-o 2e 72 ;Watch dog configuration
-o 2f XX ;minute mode or second mode
-o 2e 73 ;LSB for Watch dog tme out value
-o 2f YY
-o 2e 74 ;MSB for Watch dog tme out value
-o 2f ZZ
XX: 90 : Second mode
10 : minute mode
ex:
10 second timeout:
xx=90
yy=0a
zz=00