caron 6540 - Screen Lock-Out

6540 Series Operations Manual Rev_I 1/12/2016 39
Screen Lock-out / Adjustment
To avoid unauthorized programming or other changes, the entire touch screen can be ‘locked-out’. When the
screen is locked out, only the main screen will display. If a button is pressed while the screen is ‘locked-
out’, the Lockout screen appears. The lockout code is factory set and can’t be changed.
(Note: Screen contrast adjustment feature not available on new models.) The screen contrast is also adjusted
on the same screen. The contrast can be set between 0 and 32. The default value is 16. A lower value is
brighter.
From the Setup Menu, press the (SCREEN LOCKOUT) button.
To adjust the screen contrast, use the (UP) and (DOWN) arrow buttons.
To Lockout the screen:
1. Press the (LOCK SCREEN) button. The security code window appears.
Screen contrast
setting
Screen contrast
adjustment buttons
Lock screen
button
‘Check’ indicating
lockout status
Unlock screen
button
Press “Enter”
when done
Press “Cancel”
to abort
Enter security
code using the
numerical keypad
Press “CL” to
clear the entry
without aborting
Display window
(FEATURE
AVAILABLE ON
OLDER
MODELS ONLY)