Create a Method

1. In the Project Explorer > Subprograms section, right-click a UDFB.
   The context menu appears.
2. Select Add New Method.
3. Select an implementation language: (Figure 1)
   • Structured Text (ST)
   • Function Block Diagram (FBD)
   • Ladder Diagram (FFLD)



Figure 1: Add New Method menu

The New UDFB dialog box opens.

4. Enter a method name. (Figure 2)



Figure 2: New UDFB dialog box

5. Click OK to save the changes or selections and close the dialog box. 
   The Properties dialog box opens. (Figure 3)



Figure 3: Properties dialog box

6. Define the method's Inputs and Outputs parameters in their respective text boxes.
   The Properties dialog box looks similar to Figure 4



Figure 4: Example: Completed Properties dialog box

7. Click OK to save the changes or selections and close the dialog box.
   The new method is created as a child object under the parent UDFB in the Project Explorer. (Figure 5)



Figure 5: New method

8. Continue with Define Method Parameters.

See Also

• Call a Method
• Debug a Method
• Delete a Method
• Import or Export Methods
  • Export a Method
  • Export a UDFB with All Associated Methods
  • Import a Method
  • Import a UDFB with All Associated Methods
• Method Best Practices
• Method Restrictions
• Rename a Method

The program editor for the new Method opens automatically, allowing you to implement the logic.

• 
  
• • Naming Guidelines
    • Use verb-based names (e.g., StartPump, ResetAlarm).
    • Avoid generic names (e.g., Action1, Program 1).
    • Match the naming conventions used for programs and function blocks.

Example: Project Explorer

Subprograms

   9  MotionAxisController (UDFB)

      9  ValidateParameters (Method)

      9  ExecuteMoveProfile (Method)

      9  MonitorAxisFaults (Method)

      9  GenerateDiagnosticInfo (Method)