Associated points

Associated points generally provide limit and reference values used in SQC calculations.

Perform the following steps to specify the points required for SQC calculations:

• Use the provided fields to enter or change the tag names of associated points, if necessary. You can also click the ellipsis button to search for tags on the Data Archive server. If you are creating a new alarm using Automatic Point Generation, the tag names are already created for you.

• Use the provided fields next to each tag name to enter initial limit values for each point.

If desired, you can add and specify optional points:

• Check the box next to each optional point type you want to add, then enter a tag name or click to search for a tag on the server.

  The following default points must be defined for a real-time SQC alarm:

  Tag Alias	Description
  Source Tag	The point on which alarm calculations are performed
  Reset Tag	The point whose value sets the execution status of the pattern test evaluation
  UCL Tag	The point whose value is the upper control limit for the chart
  CL Tag	The point whose value is the center line for the chart
  LCL Tag	The point whose value is the lower control limit for the chart

  The following optional points can be associated with a real-time SQC alarm:

  Tag Alias	Description
  Test Status Tag	The point whose value corresponds to all pattern tests currently in alarm condition
  USL Tag	The point whose value is the upper specification limit for the chart
  LSL Tag	The point whose value is the lower specification limit for the chart
  Comment Tag	The point used to store comments associated with the SQC alarm