Rockwell Automation Logix5000 Controllers Sequential Function Charts Programming Manual - Manual (Page 59)

Program a sequential function chart Chapter 2
End a selection branch
1. Select the last transition of each path in the branch. To select the
transitions, do either of these actions.
• Drag the pointer around the transitions that you want to select.
• Click the first transition. Hold down Shift while clicking the rest of the
transitions that you want to select.
2. On the SFC toolbar, click .
3. Add the step that follows the selection branch.
4. To wire the selection branch to the step, click the top pin of the step
and then click the horizontal line of the branch . A green dot shows a
valid connection point.
By default, the SFC checks the transitions that start a selection branch from left to
right. If you want to check a different transition first, assign a priority to each path
of the selection branch. For example, it is a good practice to check for error
conditions first. Then check for normal conditions.
1. Right-click the horizontal line that starts the branch and then click Set
Sequence Priorities.
Set the priorities of a
selection branch
Rockwell Automation Publication 1756-PM006F-EN-P - October 2014 59