Add a Loop to the Loop List

To add manually a new Loop to a Project:

1. With the Loop List open, click New in the Records section of the Home tab to display the Loop Tag window:

   

   This window is used to specify the tag of the new loop.

2. The Class list consists of all classes to which tag formats have been assigned. Select the required class. For details of classes and tag format allocation, refer to Class Definitions.

3. The Tag Format list is then populated with all the tag formats that have been assigned to the selected class (the class designated the primary class is automatically pre-selected). Select the required tag format from this list.

   The fields displayed under the Tag Format list will depend on the fields that the selected tag format consist of. For details, refer to Tag Formats. For example, if a different tag format from that displayed above is selected, the displayed fields will change to reflect this. For example:

   

   Note: Any delimiters defined for tag format are displayed after the fields they follow.

4. Complete the fields as required, including the loop type. The list of available loop types will be restricted to those associated with the selected class. For details, refer to Loop Type Catalog. The loop function code will be automatically completed with the code associated with the loop type in the Catalog.

   The entered tag number is displayed at the bottom of the window. For example:

   

5. When the required tag data has been entered, click OK to display the Add New Loop window:

   

6. To change the tag number, click the button next to the Loop Number field to display the Loop Tag window again (see above).

   The Area No field displays the area that the loop is in, and cannot be changed. The Area Path: field displays the parent area(s) of that area, if there are any.

7. If the Drawing Required checkbox is checked, Instrumentation Engineer creates a drawing entry in the Instrumentation Designer application. The Loop Number and Loop Service are automatically inserted into the drawing list as a Loop Diagram drawing.

8. Up to two 'related loops' may assigned to the loop. This enables AVEVA Instrumentation to place information for related loops (including their instrument tag data) on any Loop Diagram created with Instrumentation Designer. To assign a related loop, select the button in one of the Related Loops fields. The Select a Related Loop window is then displayed.

   

9. Double-click on the required Loop, or select it and click Assign.

10. Use the Display by Area list to filter the list of Loops by an area.

11. The New Loop button accesses the windows for creating new Loops, as described above.

12. The Loop Instruments list at the bottom of the window shows all instruments assigned to the current loop. To assign Instrument Tag Numbers to this loop, click the Add Tag button. For further information, refer to Assign Tags to Loops.

13. To edit instrument data, double-click on the instrument tag number to display the Edit window for the instrument.

14. To remove an instrument from the Loop, select the instrument tag record in the Loop Instruments list then press the <Delete> key.