Creates a custom scale that uses an nth order polynomial equation. NI-DAQmx requires both a polynomial to convert pre-scaled values to scaled values (forward) and a polynomial to convert scaled values to pre-scaled values (reverse). If you only know one set of coefficients, use the DAQmx Compute Reverse Polynomial Coefficients VI to generate the other set.


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Inputs/Outputs

  • cstr.png name —

    name identifies the custom scale for later use, such as with the DAQmx Create Virtual Channel VI

  • c1ddbl.png forward coeff —

    forward coeff is an array of coefficients for the polynomial that converts pre-scaled values to scaled values. Each element of the array corresponds to a term of the equation.

    For example, if index three of the array is 9, the fourth term of the equation is 9x3.

  • c1ddbl.png reverse coeff —

    reverse coeff is an array of coefficients for the polynomial that converts scaled values to pre-scaled values. Each element of the array corresponds to a term of the equation.

    For example, if index three of the array is 9, the fourth term of the equation is 9y3.

  • 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.

  • ci32.png pre-scaled units —

    pre-scaled units is the units of the values to scale.

    Amps (10342)

    Amperes.

    bar (15880)

    Bar.

    deg C (10143)

    Degrees Celsius.

    deg F (10144)

    Degrees Fahrenheit.

    deg R (10145)

    Degrees Rankine.

    Degrees (10146)

    Degrees.

    From TEDS (12516)

    Units defined by TEDS information associated with the channel.

    g (10186)

    G. 1 g is approximately equal to 9.81 m/s/s.

    Hz (10373)

    Hertz.

    Inches (10379)

    Inches.

    Kelvins (10325)

    Kelvins.

    kgf (15877)

    Kilograms-force

    lb-ft (15884)

    Pound-feet.

    lb-in (15883)

    Pound-inches.

    m/s^2 (12470)

    Meters per second per second.

    Meters (10219)

    Meters.

    mVolts/Volt (15897)

    Millivolts per volt.

    Nm (15881)

    Newton meters.

    Newtons (15875)

    Newtons.

    Ohms (10384)

    Ohms.

    oz-in (15882)

    Ounce-inches.

    Pascals (10081)

    Pascals.

    Pounds (15876)

    Pounds.

    psi (15879)

    Pounds per square inch.

    Radians (10273)

    Radians.

    Seconds (10364)

    Seconds.

    Strain (10299)

    Strain.

    Volts/Volt (15896)

    Volts per volt.

    Volts (10348)

    Volts.

  • cstr.png scaled units —

    scaled units is the units to use for the scaled value. You can use an arbitrary string. LabVIEW uses the units to label a graph or chart.

  • idaqmxscale.png scale out —

    scale out is a reference to the custom scale this VI creates.

  • 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.