Rockwell Automation 1761-HHP-B30 MicroLogix 1000 with Hand-Held Programmer (HHP) - Manual (Page 338)

After You’ve Entered Your Program
Chapter 18
18–17
Setting the Lock Program Function
This option allows you to prevent proprietary algorithms from being viewed
on the display or from being stored in a memory module. When this function
is set to
NO , access to a controller program is unrestricted. This is the default.
When this function is set to YES , access to a controller program is only
permitted when a matching program exists in the memory module. If a
memory module is not present or a matching program does not exist, you can
only perform the following functions:
•
change the language
•
change the display contrast
•
change the controller mode
•
view/clear faults
•
monitor/edit data
•
view the multi-point list
•
force I/O and/or clear forces
•
clear the controller program
•
clear a memory module program
•
load a different program
Important: If you lose or delete the memory module’s copy of the program,
you must clear the controller memory and re-enter the program.