Control Limit Variables

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  1. MA-MR Limits
  2. X-Bar & S Limits
  3. X-Bar & R Limits
  4. X-MR Limits
  5. Control Limit Variable Parameters

MA-MR Limits

~uclma~

Returns the Upper Control Limit MA for MA-MR.

~lclma~

Returns the Lower Control Limit MA for MA-MR.

~uclmr~

Returns the Upper Control Limit MR for MA-MR.

~lclmr~

Returns the Lower Control Limit MR for MA-MR.

X-Bar & S Limits

~uclxbs~

Returns the Upper Control Limit Xbar for X-Bar & S.

~lclxbs~

Returns the Lower Control Limit Xbar for X-Bar & S.

~ucls~

Returns the Upper Control Limit S for X-Bar & S.

~lcls~

Returns the Lower Control Limit S for X-Bar & S.

X-Bar & R Limits

~uclxbr~

Returns the Upper Control Limit Xbar for X-Bar & R.

~lclxbr~

Returns the Lower Control Limit Xbar for X-Bar & R.

~uclr~

Returns the Upper Control Limit R for X-Bar & R.

~lclr~

Returns the Lower Control Limit R for X-Bar & R.

X-MR Limits

~uclxmr~

Returns the Upper Control Limit X for X-MR.

~lclxmr~

Returns the Lower Control Limit X for X-MR.

~uclmr~

Returns the Upper Control Limit MR for X-MR.

~lclmr~

Returns the Lower Control Limit MR for X-MR.

Control Limit Variable Parameters

Parameters can be added after the characteristic in a control limit variable as listed in the table below. The parameters 'first' and 'last' may return the effective dates of the first and last labeled feature.

~variable,characteristic,parameter~

 

variable

characteristic

parameter

-parameter description

lclxbr

x

y

z

etc...

abs

-absolute limit value

rel

-relative (to nominal) limit value

eff

-effective date

date

-limit update date

first

-first sample order label

last

-last sample order label

Example 1: The variable ~lclxbr,x,last~ would return the last sample order date of the x characteristic's lower control limit for Xbar with Range.

Example 2: A simplified form of the variables above which could be used are as follows:
     - ~lcl,pri,last~ for Primary top control chart, i.e. XBar
     - ~lcl,sec,last~ for Secondary bottom control chart, i.e. Range

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