Interface and Menus
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Publication S177E V2.0 Issue 12/04
8.8.9
Keypad Security Options
Keypad Security
1>PIN In Use
2>PIN = ****
3>Access Level 3
A security code, PIN, can be set up to prevent unauthorised changes to the master station settings or
field unit outputs. Line two shows ‘
PIN Not In Use
’ if no PIN has been set up and ‘
PIN In Use
’ once a
PIN has been set.
The ‘Access Level’ number on line 3 indicates the operations that are protected by the PIN. The
meaning of these numbers is:
Access level:
1
- No protection. Setup can be changed and keypad commands entered without the PIN.
2
- Setup protection. Setup changes require the PIN but keypad commands do not.
3
- Setup and Command protection. Both setup changes and keypad commands require the PIN.
4
- No keypad commands permitted whilst any host serial communication line is active. [If all
serial communication links are inactive for 5 seconds then keypad commands can be entered
provided the PIN is entered (as with level 3).]
Commands available:
(All changes require either the Access level to be set to 1 or the current PIN to be entered)
-
Change the requirement for inputting a PIN. When setting the PIN as ‘Out of
use’ the previously programmed PIN is lost
-
Enter a new PIN (when entered it will automatically place PIN ‘In use’). Key
in the PIN required. Numbers between 1000 and 9999 are acceptable.
Mistakes can be corrected using the CLEAR key. Finish entering the PIN by
pressing LOAD. (The shipping default is 1000).
-
Change the access level
-
Return to previous menu
Entering a PIN from any screen:
-
Pressing
the
*
key reveals the PIN entry screen.
Type in the PIN and then press the LOAD key. If the PIN is correct then
press the MENU key to return to the previous page.
When an action requires the PIN to be entered a screen message ‘PIN required’ is displayed.
MENU
1
2
3
*
