Alters the state of a task according to the action you specify.

If error in indicates that an error occurred previously, this VI executes normally if action is unreserve or abort.


icon

Inputs/Outputs

  • cgenclassrntag.png task/channels in —

    task/channels in is the name of the task or a list of virtual channels to which the operation applies. If you provide a list of virtual channels, NI-DAQmx creates a task automatically.

  • ci32.png action —

    action specifies how to alter the task state.

    verify (2)

    Verifies that all task parameters are valid for the hardware.

    reserve (4)

    Reserves the hardware resources needed for the task. No other tasks can reserve these same resources.

    commit (3)

    Programs the hardware as much as possible according to the task configuration.

    unreserve (5)

    Releases all previously reserved resources.

    abort (6)

    Aborts execution of the task. Aborting a task immediately terminates the currently active operation, such as a read or a write. Aborting a task puts the task into an unstable but recoverable state. To recover the task, use DAQmx Start to restart the task or use DAQmx Stop to reset the task without starting it.

  • 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 runs. If you wired a channel or list of channels to task/channels in, NI-DAQmx creates this task automatically.

  • 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.