Rockwell Automation 9323-PA1E USER MANUAL APS 6.0 - Manual (Page 62)

Preface
Advanced Programming Software User Manual
4–8
Branching Combinations and Limitations
Use branching to avoid redundant instructions, speed-up processor evaluation, and
provide more efficient programming.
APS allows branching combinations to be programmed in the fixed, SLC 5/01, SLC
5/02, SLC 5/03, and SLC 5/04 processors, and the MicroLogix 1000 controllers.
(Note that the Hand-Held Terminal (HHT) does not allow nested input and output
branches to be programmed in a fixed or SLC 5/01 processor.)
Extended Branching Versus Nested Branching
Using extended branches rather than nested branches is more efficient and speeds up
processor evaluation. Both of the examples shown below accomplish the same
result; however, the extended branching example is evaluated approximately 1
ms
faster than the nested branching example.
Extended Branching
Nested Branching