Watchdog Whack

Whacks the watchdog. Whacking the watchdog resets the watchdog counter to the specified count. If the specified count equals 0, the watchdog counter is reset to the previously specified count. Details  Examples

Place on the block diagram.

Find on the Functions palette.

	watchdogID in identifies the watchdog timer application.
	reset watchdog after expire? determines whether a whack after the watchdog timer has expired resets the watchdog timer. The default value is FALSE, which specifies that the watchdog timer remains expired after the first expiration.
	error in describes error conditions that occur before this VI or function runs. The default is no error. If an error occurred before this VI or function runs, the VI or function passes the error in value to error out. This VI or function runs normally only if no error occurred before this VI or function runs. If an error occurs while this VI or function runs, it runs normally and sets its own error status in error out. Use the Simple Error Handler or General Error Handler VIs to display the description of the error code. Use error in and error out to check errors and to specify execution order by wiring error out from one node to error in of the next node. status is TRUE (X) if an error occurred before this VI or function ran or FALSE (checkmark) to indicate a warning or that no error occurred before this VI or function ran. The default is FALSE. code is the error or warning code. The default is 0. If status is TRUE, code is a non-zero error code. If status is FALSE, code is 0 or a warning code. source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning. The default is an empty string.
	watchdogID out has the same value as watchdogID in.
	watchdog status is the current status of the watchdog timer. The following are valid values for watchdog status: 0 Disabled 1 Expired 2 Running
	error out contains error information. If error in indicates that an error occurred before this VI or function ran, error out contains the same error information. Otherwise, it describes the error status that this VI or function produces. Right-click the error out indicator on the front panel and select Explain Error from the shortcut menu for more information about the error. status is TRUE (X) if an error occurred or FALSE (checkmark) to indicate a warning or that no error occurred. code is the error or warning code. If status is TRUE, code is a non-zero error code. If status is FALSE, code is 0 or a warning code. source describes the origin of the error or warning and is, in most cases, the name of the VI or function that produced the error or warning.

Watchdog Whack Details

The Watchdog Whack VI also starts the watchdog timer if the current status is disabled. You can use the Watchdog Whack VI to restart the watchdog timer after it has expired.

Examples

Refer to the Watchdog Occurrence - RT Engine VI and Watchdog Reset - RT Engine VI in the labview\examples\Real-Time\RT Watchdog (PXI).llb directory for examples of using the Watchdog Whack VI.

 Open Watchdog Occurrence - RT Engine VI example

 Open Watchdog Reset - RT Engine VI example

 Browse related examples