The screen will read:
No Config R #/#
If the rack number is 2 (or higher) /0, you will need to Abort Boot to clear the rack number. The CEM+ processor will then hold the configuration that you give it. To Abort Boot, hold the double back arrow (<<) while resetting or powering the rack on until you see “Abort Boot” on the screen. It will then come up to the “No Config/Generate Defaults” screen with a Rack number of 1/0. You can then set the rack as needed.
If your processor shows a rack number of 1/0 and still will not hold a configuration, or Abort Boot does not help, please contact ETC Technical Services.