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Limits on the Control Chart Change When I Use the Draw Chart with Zones VI in the LabVIEW SPC Toolkit

Primary Software: LabVIEW Toolkits>>Statistical Process Control Toolkit
Primary Software Version: 1.0
Primary Software Fixed Version: N/A
Secondary Software: N/A

Problem: I am using the X & mR Chart VI, which computes chart limits. When I change the standard error multiplier input, my limits do not change on the control chart. I am using the Draw Chart with Zones VI to produce the control chart.

Solution: The Draw Chart with Zones VI produces charts with zone lines, not control limit lines. Three zones, A, B and C correspond to upper and lower 3 , 2 and 1 standard error control limits, respectively. These zones lines shift only if the standard error changes. The standard error multiplier does not affect the lines. To view the change in control limits by altering the standard error multiplier, use the Draw Control Chart VI.

Related Links: LabVIEW Enterprise Connectivity Toolkit

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Report Date: 08/28/2001
Last Updated: 06/14/2004
Document ID: 2CRFL9FT

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