Converting Measurements to Factors
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written: 10/26/2007
last modified: 03/08/2024

PREREQUISITES
QC-CALC Real-Time 3.0.256. If you have an earlier version of QC-CALC 3.0, simply go to Help > Run Update.

INTRODUCTION
This article discusses a new feature in QC-CALC Real-Time that allows you to convert measurement data to a factor in QC-CALC during data collection. There are times when you have a numeric value that is a measured feature of the part, but that you want to store as a factor value (trace feature).

The following is a special command that you can pass to QC-CALC that will be recognized during data collection and will cause the conversion of the measured value into the numeric factor of your choice.

NOTE: This command works on any automatic inspection machine and in QC-Gage Spec plans.

STEPS
  1. For the feature you want to convert, change the feature label to @TRACEN04@Factor Name.

    The @TRACEXXX@ part is a special pattern that tells QC-CALC to convert the feature to a factor during data collection.

    The "N" tells QC-CALC to use a Numeric factor to store the results.

    The "04" tells QC-CALC to use the 4th (numeric) factor for the storage. You can use any number from 01-30, but make sure you specify a zero in the first digit if the number is lower than 10.

    Everything after the second "@" is the name of the factor. It doesn't have to be upper case letters and can contain multiple words.

    Example: @TRACEN12@Cavity Number
    This creates a numeric factor 12 called Cavity Number and places the values measured (or entered) in this factor.

  2. If you have any unreasonable value warning validation set up on your measurements, make sure you have a large enough tolerance to accomodate the values you will be entering.

    For example, if you have a 16 cavity mold, set the Nominal to 8 and the tolerances to plus/minus 8. This way, you won't have popups for unreasonable values when you enter your data. These numbers will be thrown away during data collection since the values will end up in a factor rather than a plot.

  3. When you run your inspection plan (or fill in the numbers in QC-Gage), they will automatically be placed in the correct factor as specified above.
MORE INFORMATION
For more information about storing measurements as trace fields using an offset measurement, please read our white paper entitled Automatically Passing Cavity Information to QC-CALC. This paper goes into more detail on how to use offset measurements to identify your trace data values.

Applies To

QC-CALC Enterprise v.3.00
QC-CALC Enterprise (Unicode) v.3.10
QC-CALC Enterprise for Gage v.3.00
QC-CALC Real-Time v.4.10
QC-CALC Real-Time v.3.00

Category

Data Collection
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