The following explains how to edit Function Blocks (FBs).
Copying Function Blocks
When creating multiple FBs that perform similar processes, you can create a new FB easily by copying and pasting an existing FB.
Select the FB you want to copy in the Screen List window.
Click the icon 
.
You can also copy the FB by right-clicking it when it is selected, and selecting [Copy] from the pop-up menu.
Paste the copied FB in the [Screen List] window.
A dialog box opens where you can specify a name for the FB. Enter a name in [Name] and click [Paste]. You can use up to 4 alpha-numeric characters.
You cannot have duplicate FB names in a project.
The FBs already registered in the [Screen List] window are listed in the [Existing Function Block Names].
Changing Attributes
You can edit existing FB names and management information.
Select the FB for which you want to change attributes in the [Screen List] window.
Click the icon 
.
You can also change attributes by right-clicking the FB when it is selected, and selecting [Change Attributes] from the pop-up menu.
In the [Change Function Block Attributes] dialog box that appears, edit [Name], [Creator], [Revision], [Title] etc.
When you change a name of a FB which has been already placed in a logic program, the FB in the logic program reflects the change as well.
In [Memory Capacity], you can check the number of local variables that are used as the number of steps in the selected FB. Click [Details] to open the [Variable Capacity] dialog box, where you can check the variable capacity in detail.
Delete
You can delete an FB from the [Screen List] window.
Select the FB you want to delete in the Screen List window.
Click the icon 
.
You can also delete the FB by right-clicking it when it is selected, and selecting [Delete] from the pop-up menu.
You cannot delete FBs that are placed in logic programs. You must delete the FB in the logic program first, then delete it in the [Screen List] window.