Configures the expiration states for a digital watchdog timer task.

The DAQmx Watchdog properties contain additional watchdog timer configuration options.


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Inputs/Outputs

  • cgenclassrntag.png task in —

    task in is the name of the task to clear. Unlike the task/channels in input on some VIs, you cannot wire a virtual channel to this input.

  • c1dcclst.png expiration states —

    expiration states contains the states to which to set digital physical channels when the watchdog timer expires. Each element of the array contains a digital physical channel name and the corresponding state for that digital physical channel.

  • cdaqmxscale.png physical channel —

    physical channel is the digital line or port to modify. You cannot modify dedicated digital input lines. The DAQmx physical channel constant lists all lines and ports for devices installed in the system.

    You also can wire a string that contains a list or range of digital lines or ports to this input. If you have an array of lines or ports, use the DAQmx Flatten Channel String VI to convert the array to a list.

  • ci32.png expiration state —

    expiration state specifies the state to which to set the digital physical channel when the watchdog timer expires.

    High (10192)

    High logic.

    Low (10214)

    Low logic.

    No Change (10160)

    Expiration does not affect the port. Do not change the state of any lines in the port, and do not lock the port. For example, if a line is high when the timer expires, that line stays high, and you can write new values to the line. You can select this value only for entire ports.

    Tristate (10310)

    High-impedance state. You can select this state only on devices with bidirectional ports, and you can select it only for entire ports. You cannot select this state for dedicated digital output lines.

  • cerrcodeclst.png error in —

    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. If an error occurs while this VI or function runs, the VI or function 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.

  • igenclassrntag.png task out —

    task out is a reference to the task after this VI or function completes execution.

  • ierrcodeclst.png error out —

    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, error out 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.