Rockwell Automation 5370-CVIM2 Module - Manual (Page 101)

5 Chapter Chapter 4
Inspection Configuration
4–15
For example, when the sample size is set to 100 for a particular window tool,
the CVIM2 system compiles a block of inspection results from 100
consecutive window inspections and calculates a set of statistical values
(maximum, minimum, mean, and standard deviation) from those results. The
system then places the set of statistical values in the window tool’s detail
panel, where you can view them, and stores them in a results block, where a
host computer can access them.
When the system acquires the next block of 100 inspection results, it uses
these results to calculate a new set of statistical values and overwrite the
previous set of values.
The main advantage of setting a sample size is to identify trends in the
inspection results more easily and quickly.
Range Failures
The Range Failures field enables you to either include or exclude “failed”
tool results from the statistics calculations for all tools in a specific toolset.
(Note that the term “failed,” as used in this context, refers to any tool result
that is above the fail high limit, or is below the fail low limit.)
If Range Failures is set to Include , the CVIM2 system accumulates
statistics for all inspected parts, and it includes failed tool results in statistical
calculations for the specified toolset.
If Range Failures is set to Exclude , the system accumulates statistics only
for “good” parts, and it excludes failed tool results from such calculations.
Note that the Range Failures function applies only to a tool for which
statistics collection can be selected, such as a window tool, and for which the
Statistics box has been checked in the Options selection panel for the tool.