Oem Protection - Legacy Mode - Emerson PACSystems RX3i User Manual

PACSystems™ RX3i and RSTi-EP CPU Reference Manual
GFK-2222AK
Table 4-3: Privilege Level After Password Config
Level 1
No
No
No
No
No
4.9.1.3 Maintaining Passwords through a Power Cycle
Initial passwords are blank for a new controller or a controller that has its passwords
cleared. For passwords to be maintained through power cycles, the controller must
either:
▪
▪
4.9.1.4 Disabling Passwords
The use of password protection is optional. Passwords can be disabled using the
programming software.
Note: To enable passwords after they have been disabled, the CPU must be power cycled
with the battery or Energy Pack removed.
4.9.2 OEM Protection – Legacy Mode
Original Equipment Manufacturer (OEM) protection provides a higher level of security
than password levels 1 through 4. This feature allows a third-party OEM to create control
programs for the CPU and then set the OEM-locked mode, which prevents the end user
from reading or modifying the program.
The OEM protection feature is enabled/disabled using a 1- to 7-character password,
known as the OEM key. When OEM protection is enabled, all read and write access to the
CPU program and configuration is prohibited: any store, load, verify, or clear user
program operation will fail.
4.9.2.1 OEM Protection in Systems that Load from Flash Memory
CPU Operation
Passwords Defined
Level 2
Yes
No
No
No
Yes
Store to RAM and use an Energy Pack or battery to maintain memory.
Store to User Flash with configuration set up to load from Flash at power up.
Level 3 Level 4
Yes Yes
Yes Yes
No Yes
Yes No
No No
Section 4
October 2019
Privilege Level on
Connection
Level 1
Level 2
Level 3
Level 2
Level 1
104