Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) - Manual (Page 312)

Chapter 16
Instruction List Programming
16–8
Since more than one instruction list representation may be possible for a
single rung, you should be aware of the following programming issues if you
are using programming software with your MicroLogix 1000 HHP:
•
Any rung created in the HHP and saved to the controller, uploaded to
programming software and edited, downloaded to the controller, and then
monitored by the HHP will have the optimized instruction list
representation. Thus, the program size and scan time may decrease if you
originally created a program with a non-optimized list representation.
•
Any rung created using programming software, downloaded to the
controller, and then monitored by the HHP will have the optimized
instruction list representation.
•
Any rung created using programming software, downloaded to the
controller, edited by the HHP and saved to the controller, and then
uploaded to the programming software will have all unnecessary branches
removed. Thus, the program size and scan time may decrease.
Programming Considerations