Meriam M2110L SMART LEVEL GAUGE - Manual (Page 23)

9R143 Dated 3/2011
21
LOCKOUT CODE PROMPT
DESCRIPTION
When a gauge is “locked” for security purposes, it does not allow access to change its operating state
without first providing the lockout code. A gauge is “locked” by entering a lockout code in register P0
(See “STEP BY STEP: P0, LOCKOUT CODE” on page 9).
After pressing a key on a locked gauge for a desired function (ZERO, ENG UNITS, PRGM), “L 00” will
appear on the display, with the first 0 flashing. This is the prompt to enter the lockout code (similar to a
password).
VIEW-ONLY STATUS
If a user attempts to enter Program Mode without providing a correct lockout code (password), the gauge
briefly provides an error message, and then enters a “view-only” status, denoted by the PRGM indicator
flashing. In this mode, all registers (except the lockout code register itself) can be viewed, but not changed.
In this view-only status, the operator navigates through the registers exactly the same as if programming the
registers. However, the keys that would change a value are simply ignored by the gauge. Thus, the
PRGM/Enter
→ key will open a register normally; the Backspace← key will close the register, and then
return to Measure Mode as expected.
STEP BY STEP: ENTERING A LOCKOUT CODE (When Prompted)
Step Action Display
1 After attempting to re-zero, change Engineering
Units, or enter Program Mode... The display will prompt “L 00” with the first zero
flashing for edit (indicating Lockout Code 00).
2 Press the Up
↑ or Down↓ keys repeatedly to scroll
to the desired numeric value for the flashing digit.
“L xy”, where “x” is the digit being edited.
3 Press PRGM/Enter
→ key to accept the digit.
The next digit begins flashing for edit.
4 Repeat steps 2 and 3 for the second digit. The complete 2-digit value will be accepted.
If the correct code was entered, the gauge will perform the requested function. Otherwise, an
error message is displayed, and the gauge either returns to Measure Mode, or enters a “view-
only” status for the programmable registers (if Program Mode was requested).
Notes 1. After step 1 or 2, the Backspace
← key will abort the process and return to Measure Mode.
2. After step 3, pressing the Backspace
← key will abort the current digit and backup to the first digit.
Another Backspace
← will abort the process and return to Measure Mode.
3. Between steps 1 and 4, the Zero function (Up
↑ + Down↓) will clear the entire entry to “00” again.
4. Between steps 1 and 4, if there is no keypad activity for approximately 1 minute, the operation is
aborted and the gauge returns to Measure Mode unchanged.
All Models