Programmer (HHP) User guide

After Y ou’ve Entered Y our 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.