Order of Execution

The order of execution of programs within a project is determined from the Cycle window.

The order of execution is always

1. High Priority
2. SFC Section
3. Normal Priority

The order within each grouping is determined by the vertical ordering. Using the image above, the order of execution for Normal Priority programs is:

1. UntitledFBD
2. UntitledST1
3. UntitledFBD1

For more information see Define the PLC Cycle.