Command: Refactoring – Remove <variable>

Symbol:

Function: The command removes an input or output variable from the POU and all occurrence locations of the POU.

Call: Edit → Refactoring menu; context menu

Requirement: In the declaration part of the POU, the cursor is positioned in the identifier of the variable to be removed.

First the command opens a dialog with information about the desired remove. After you confirm this, the Refactoring dialog opens. For a description of the Refactoring dialog, see the help page for the Edit → Refactoring → Rename command.

When you accept the changes in the Refactoring dialog, the respective input and output parameters are deleted at the occurrence locations of the relevant POU.

Tip

In CFC, only the connection is removed between the remote input or output to the block. The input or output itself is retained in the chart.

Example 541. Example in ST

In a POU, you remove the input4 input variable by means of "refactoring".

The occurrence locations are updated automatically.

Before removal:

inst(input1 := a + b, input2 := 3, input4 := 1, input5 := TRUE);
fun(a + b, 3, 1, TRUE);

After removal:

inst(input1 := a + b, input2 := 3, input5 := TRUE);
fun(a + b, 3, TRUE);

For more information, see: Refactoring