(UniInt) Performance Points

Performance points only pertain to UniInt-based interfaces. This section is disabled if the interface being configured is not UniInt-based.

Performance points monitor the amount of time in seconds that it takes an interface to complete a scan for a particular scan class. The closer the scan time is to 0 seconds, the better the performance. The scan time is recorded to millisecond resolution.

The Performance Points page allows you to create, delete, correct and rename UniInt interface performance points. Right-click and choose a menu command to work with performance points:

• Choose Create to create the selected point.

• Choose Create All to create all points marked Not Created or Deleted.

• Choose Delete to delete a selected point.

• Choose Correct to correct a selected point's definition.

• Choose Correct All to correct all points marked Incorrect.

• Choose Rename to specify a new name for the selected point.

• Choose Refresh Snapshots to update the Snapshot column for all points.

• Choose Refresh Table to reload all performance points in the table. This will refresh the Tagname column if the interface was moved from one node to another.

If a point already exists, the status is marked Created and the Delete option is enabled. If a point does not exist, the status is marked Not Created or Deleted and the Create option is enabled.

Performance points are created with the following PI point attribute values:

• Tag

  Point name that appears in the list box

• PointSource

  Point source for points for this interface, as specified on the first page

• Compressing

  Off

• Excmax

  0

• Descriptor

  Interface name + Scan Class # Performance Point

• Status

• The Status column in the Performance Points table indicates whether the performance point exists for the scan class in column 2.

  • Created

    Indicates that the point does exist.

  • Not Created

    Indicates that the point does not exist.

  • Deleted

    Indicates that a point existed, but was just deleted by the user.

  • Incorrect

    Indicates that the point exists in PI, but is not correctly defined.

• Scan Class #

  The Scan Class # column indicates the scan class to which the performance point in the Tagname column belongs. There is one scan class in the Scan Class # column for each scan class listed in the Scan Classes field on the General page.

• Tagname

  The Tagname column holds the name of the performance point.

• PS

  The PS field is the point source of the performance point.

• Location<ID>

  The ID field is updated to show the attribute that the currently selected interface uses to hold the ID. In this example, that is Location5. Many interfaces use Location1.

• Exdesc

  The extended descriptor field holds the performance point definition, as used by UniInt.

• Snapshot

  If the point exists in PI Server, then the Snapshot column holds the snapshot value for this point.