Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 104

When a normal active step remains or when a HOLD step [SC,
SE, ST] whose transition has not become TRUE remains (the
step does not hold an operation)
• When SM328 is off, the block is ended by clearing the step.
• When SM328 is on, processing is continued without clearing the step.
• If a block is started at the block start step when SM328 is on, execution returns to the source as soon as there are no active
step that does not hold the operation in the block.
• Prevent the transition after the operation HOLD step (with transition check) [ST] from becoming always TRUE. When the
transition immediately after the operation HOLD step (with transition check) [ST] always becomes TRUE, the next step is
kept active and, therefore, the block can no longer be ended when SM328 is on.
Multiple end steps can be created in the SFC diagram.
To do so, select a step in the selection branch and select [Edit]  [Modify]  [End Step/Jump] from the menu.
8 SFC PROGRAM
102
8.2 Structure
When an active step that holds an operation remains
• The block is ended by clearing the step regardless of the setting of SM328.