
B-63484EN/05 3.CREATING AND EDITING SEQUENCE PROGRAMS
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3.3.26.1 Setting the maximum number of undo operations
Procedure
1 Select [Tool]-[Option]. Then click the [Ladder] tab.
2 Move the cursor to [Undo max number], and set the maximum
number of Undo operations.(Range of setting : 0 - 50)
3 Click the [OK] button.
Fig. 3.3.26.1
NOTE
1 This function is effective to the following edit operations.
- Ladder editing in the direct ladder edit screen
(Includes “Change of PMC address by Replace
function”.)
- Addition and deletion of sub-program (P1/P2…) in
program list screen.
2 Undo log is erased by the following operation.
- Changing the “Number of contacts + coil a line”
- Changing the “Method of editing ladder diagram”
- Changing the online mode
- Executing the Decompilation
- Importing the source program
3 There is a case that the operation cannot be canceled
correctly, when the nets which
contain the error are
connected.