Table A.1: Watchdog Timer Registers - Advantech PCE-7131 User Manual

Table A.1: Watchdog timer registers

Address of Attribute
register (2E) Read/Write
87 (hex) -----
07 (hex) write
30 (hex) write
F5 (hex) write
Unlock NCT6776D
Select register of
watchdog timer
Enable the function of
the watchdog timer
Use the function of
the watchdog timer
Lock NCT6776D
Value (2F)& description
Write this address to I/O address port 2E (hex) twice to
unlock the NCT6776D
Write 08 (hex) to select register of watchdog timer.
Write 01 (hex) to enable the function of the watchdog
timer. Disabled is set as default.
Set seconds or minutes as units for the timer. Write 0 to
bit 3: set second as counting unit. [default]. Write 1 to bit
3: set minutes as counting unit
Write 1 to bit 4: Watchdog timer count mode is 1000
times faster.
If bit 3 is 0, the count mode is 1/1000 seconds mode. If
bit 3 is 1, the count mode is 1/1000 minutes mode.
77 PCE-7131/5131/5031 User Manual