Enter general point attributes

Note: If you have used the Interface Configuration Utility (ICU) to configure the interfaces that use the Data Archive you are using, the Performance Equations tool will populate the Point source field. By default, this value is C. You can change the point source, provided the PE points you use are not dependent on PE points with Point source C. The Point class field is also populated. All Performance Equations use the classic point class.

Edit the following fields in the General tab of a PE point:

• Name

  Enter a point name.

  Note: The name text appears blue if the point does not exist on the selected Data Archive server. The text appears black if the point exists, or a server is not selected, preventing validation.

• PI Server

  Select a Data Archive from the list of connected servers in the Collectives and Servers pane.

• Descriptor

  Enter an optional description of the point to describe the underlying intention or performance equation used.

• Point Class

  For PE points, the point class is a read-only field set to classic.

• Point Source

  Select the correct point source.

  The point source should correspond to the Performance Equation Scheduler instance that the point belongs to.

  Multiple instances of the PE Scheduler can be created, registered with PI Interface Configuration Utility (PI ICU), and read from the Module Database. If no instances are registered with PI ICU, the default point source used by the Scheduler is C.

• Point Type

  Select the point type for the point. A Performance Equation can use Point Types Digital, Float64, Float32, Int32, Int16 and String.

• Digital Set

  Choose a digital set from the Data Archive. This menu is activated only if the selected Point Type is Digital. The System digital set is otherwise used.

• Engineering Units (Eng Units)

  Optional: Enter engineering units to describe the default unit of measurement for the point.

• Display Digits

  Enter an optional number of display digits to determine the display precision of point values.

• Extended Descriptor (Exdesc)

  For PE points, this field is read-only and displays the PE point calculation logic.