Watchdog Set Attribute VI

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LabVIEW 2009 Real-Time Module Help

Edition Date: June 2009

Part Number: 370622G-01

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Owning Palette: Advanced Watchdog VIs

Requires: RT Module

Sets the watchdog object attribute you specify to the value you specify.

This VI coerces the attribute value you specify to the nearest value supported by the watchdog hardware. You can use the attribute value returned indicator to determine the actual attribute value that the VI sets. Refer to the specific RT target hardware documentation for information about supported attribute values.

attribute is the watchdog timer attribute to write. The following are valid attributes:

Current count	(Read-only) Returns the current value of the watchdog timer. This attribute is not supported on PXI targets.
Hardware expire	Currently not supported on any targets.
Hardware ID	(Read-only) Returns the hardware ID number of the watchdog hardware.
Hardware lock	Sets a Boolean value specifying whether the watchdog hardware configuration has been completed and locked.
Initial count	Sets the starting value of the counter before the countdown begins.
Instance	(Read-only) Returns the instance number of the watchdog object you specify using the watchdogID in parameter.
Resolution	Currently not supported on any targets.
Time step	Sets the rate at which the counter decrements.
Total timeout	Sets the total timeout value (TotalTimeout = InitialCount value * TimeStep value)
Whack input source	Sets the trigger line configured as the input for the watchdog hardware.

watchdogID in specifies a watchdog object.

attribute value is the value to which the specified attribute is set. Time values are specified in microseconds.

error in (no error) describes error conditions that occur before this node runs. This input provides standard error in functionality.

watchdogID out has the same value as watchdogID in.

attribute value returned is the value of the specified attribute. This value is undefined if the RT target does not support the attribute you specify. This parameter specifies time values in microseconds.

error out contains error information. This output provides standard error out functionality.