imaqIOWatchdogConfigure

Format

rval = imaqIOWatchdogConfigure(IMAQIO_SESSION id, unsigned long timeout, IMAQIOExpirationAction expirationAction);

Purpose

Configures a watchdog timer on the NI-IMAQ I/O device.

Parameters

Name	Type	Direction
id	IMAQIO_SESSION	input
timeout	unsigned long	input
expirationAction	IMAQIOExpirationAction	input

Parameter Discussion

id is the ID of the session to configure the watchdog on.

timeout is the time, in milliseconds, that can occur without a reset before the watchdog occurs.

expirationAction is the action to take when the watchdog occurs:

IMAQIO_EXPIRATION_ACTION_INDICATOR_ONLY	Sets the watchdog status attribute.
IMAQIO_EXPIRATION_ACTION_ASSERT_TTL_OUT_0	Drives the TTL Out 0 line high when the watchdog occurs.
IMAQIO_EXPIRATION_ACTION_SHUTDOWN	Shuts down the NI-IMAQ I/O device when the watchdog occurs. Refer to imaqIOEnableShutdown for information about enabling shutdown on the NI-IMAQ I/O device.

Return Value

This function returns 0 on success. On failure, this function returns an error code. For information about the error code, call imaqIOGetErrorText.