Advantech user manual Address of register 2E, Attribute, PCA-6187 User’s Manual

Watchdog Timer Registers

Address of register (2E)	Attribute
Read/Write	Value (2F) and
	description
87 (hex)	-----	Write this address to I/O
		address port 2E (hex) twice
		to unlock theW83627HF
07 (hex)	write	Write 08 (hex) to select reg-
		ister of watchdog timer.
30 (hex)	write	Write 01 (hex) to enable
		the function of the watch-
		dog timer. Disabled is set
		as default.
F5 (hex)	write	Set seconds or minutes as
		units for the timer.
Write 0 to bit 3: set sec-
ond as counting unit.
[default]
Write 1 to bit 3: set
minute as counting unit
F6 (hex)	write	0: stop timer [default]
		01~FF (hex): The amount
		of the count, in seconds or
		minutes, depends on the
		value set in register F5
		(hex). This number decides
		how long the watchdog
		timer waits for strobe
		before generating an inter-
		rupt or reset signal. Writing
		a new value to this register
		can reset the timer to count
		with the new value.

PCA-6187 User’s Manual 92