Technical information

5 – PARAMETER DESCRIPTIONS
86
P72 Passcode FUN 16
LCD Display
FUN: Passcode
16 Off
Description The MX supports a 4-digit passcode. When the passcode is set, parameters may not be changed.
When a passcode is set and an attempt is made to change a parameter through the display/keypad, the
UP and DOWN keys simply have no effect. When a passcode is set and an attempt is made to change
a parameter through Modbus, the MX returns an error response with an exception code of 03 (Illegal
Data Value) to indicate that the register can not be changed.
LED Display The following steps must be performed to set a passcode using the LED Display:
1. At the default meter display, press the PARAM key to enter the parameter mode.
2. Press the UP or DOWN keys to get to the passcode parameter.
3. Press the ENTER key. “Off” is displayed to indicate that no passcode is currently set.
4. Press the UP or DOWN keys and ENTER FOR each digit to be defined, select a value from 0000 to
9999 starting at the most significant digit.
5. Press the ENTER key to set the passcode.
The following steps must be performed to clear a passcode.
1. At the default meter display, press the PARAM key to enter the parameter mode.
2. Press the UP or DOWN keys to get to the passcode parameter.
3. Press the ENTER key. “On” is displayed to indicate that a passcode is presently set.
4. Press the UP or DOWN keys and ENTER after each digit to select the previously set passcode
value.
5. Press the ENTER key. The passcode is then cleared.
LCD Display The following steps must be performed to set a passcode using the LCD Display:
1. At the default meter display, press the MENU key to enter the Menu mode.
2. Press the UP or DOWN keys to get to the FUN parameters.
3. Press the ENTER key
4. Press the UP or DOWN keys to get to the FUN 16.
5. Press the ENTER key. “Off ” is displayed to indicate that no passcode is currently set.
6. Press the UP or DOWN keys and ENTER for each digit to be defined, select a value from 0000 to
9999 starting at the most significant digit Press the ENTER key to set the passcode.
The following steps must be performed to clear a passcode.
1. At the default meter display, press the MENU key to enter the menu mode.
2. Press the UP or DOWN keys to get to the FUN parameter.
6. Press the ENTER key
7. Press the UP or DOWN keys to get to the FUN 16.
3. Press the ENTER key. “On” is displayed to indicate that a passcode is presently set.
4. Press the UP or DOWN keys and ENTER after each digit to select the previously set passcode
value.
5. Press the ENTER key. The passcode is then cleared.
NOTE: To re-establish password protection after it has been cleared, the password must be entered
again.