Creates a timing source that sends ticks to a Timed Loop on rising and/or falling edges of one or more digital lines. You can use this instance of this VI only with devices that support digital change detection. Use the instance of the DAQmx Create Timing Source VI with other devices. That instance uses a counter and cannot detect edges on multiple lines.


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Inputs/Outputs

  • cstr.png timing source name —

    timing source name is the name to assign to the timing source this VI creates.

  • cdaqmxscale.png rising edge physical channels —

    rising edge physical channels specifies the names of the digital lines or ports on which to detect rising edges. The DAQmx physical channel constant lists all lines and ports for devices installed in your system.

    You also can wire a string that contains a list or range of digital lines or ports to this input.

  • cdaqmxscale.png falling edge physical channels —

    falling edge physical channels specifies the names of the digital lines or ports on which to detect falling edges. The DAQmx physical channel constant lists all lines and ports for devices installed in your system.

    You also can wire a string that contains a list or range of digital lines or ports to this input.

  • 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.

  • istr.png timing source out —

    timing source out is the name of the timing source this VI creates. Wire this output to the source input of the Input Node of a Timed Loop.

    If you specified a name for the timing source in the timing source name input, this output contains the same name. If you did not specify a name for the timing source, NI-DAQmx creates a name and sets this output to that name.

  • 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.