In order to automatically set control limits for a new process, or when your process is in optimum condition, use the Auto Recalculation option.
To use auto recalculation to automatically set
values:
Select the Limits tab.
Check the Auto recalculation radio button.
If you want to use the current control limits elsewhere in your project, or download them to a device, indicate the floating-point array Point of six (6) elements in the Setpoint ID field. The Point contains six elements for all values to be set in the following order: XBar LCL, XBar CL, XBar UCL, R/S LCL, R/S CL, R/S UCL. Do one of the following:
Click 
to browse for an existing Point
in the Select a Point dialog box, or
Click 
to designate a New Point.
In the Force auto recalc field, indicate the Boolean Point ID that has been created to override the value control limits at runtime. This feature can be configured to be turned on or off at runtime.
|
Point On/Off |
Set to |
Auto-calculation is |
|
Point On |
TRUE |
Activated and all previous values are ignored. |
|
Point Off |
FALSE |
Deactivated and the data collector continues to use the last calculated values. |
Once enough data has been collected to calculate valid control limits, deactivate auto recalculation and use Values or Points to set control limits for your process in the dialog box.
Do one of the following:
Click to browse for an existing Point
in the Select a Point dialog box, or
Click to designate a New Point.
Indicate the Specification limits for Histogram analysis as follows:
|
Lower |
Enter the Lower Specification Limit (LSL). |
|
Upper |
Enter the Upper Specification Limit (USL). |
Note: Whenever the Force Auto Recalc
Point is set to either TRUE or FALSE, the data collector will drop
the current sample and start fresh.
|
|
Step 3.4. Set limits for variable quality characteristics. |
