USER MANUAL APS 6.0

Protection
8–5
Future Access (OEM Lock)
This option allows you to protect proprietary program data and algorithms. This
type of protection can be applied using any of the SLC 500 processors or
MicroLogix 1000 controllers. The protection takes effect only after the program is
downloaded to a controller
. The protection does not allow online access to the
processor program unless a matching copy of the online processor program is
resident on the hard disk, in the Hand-Held Terminal (HHT), or in the memory
module of a Hand-Held Programmer (HHP).
Allow:
Online access to the processor file and data table is unrestricted. This is the
default.
Disallow: Online access to the processor program is not permitted. You cannot:
• monitor the program or create reports
• enter or change the password
• save the online processor file to disk
• transfer the file from the processor memory to a memory module (SLC 500
pr
ocessors only)
However, you can:
• edit or view user data
• clear the processor memory
• create the processor configuration and data table reports (SLC 500 pr ocessors
only)
• transfer the contents of a memory module into the processor memory (SLC 500
pr
ocessors only)
• restore (download) a different program to the controller
Note If you lose or delete the offline copy of the pr ogram, you cannot access the pr ogram
in the contr oller. Y ou must clear the contr oller memory and r e-enter the pr ogram.
This featur e is not r ecommended for use when the HHT is your only sour ce of
pr ogram backup.
Ther e is no “back door” access to get ar ound this featur e. If you intend to use this
featur e, back up your pr ogram.