Disabling And Enabling Programming - Siemens SITRANS LR 400 Instruction Manual

Disabling and enabling programming

To prevent unauthorized personnel causing programming errors via the operating and
monitoring module, set a customer code – a personal, freely selectable code number
which may be up to 9 characters long. A device protected by a customer code still
displays all functions and values but it requests input of the code number before allowing
a parameter to be reset.
Programming is enabled when you:
• enter the requested customer code for the current parameter (only the current
parameter is enabled for reprogramming. All the others are still waiting for input of
the customer code).
• or release the programming lock for all parameters at once in the "Code Input"
function (see Parameter 5.1 on page 52).
Both ways will release the programming lock on parameters for approx. 10 min.
When you return to the multi-display or enter a number in the "Code Input" function
which is different to the customer code, or do not operate the device for 10 minutes, the
programming lock is enabled.
Enter the customer code as described in Parameter 5.2 on page 52.
Note:
If the customer code is "0" in Parameter 5.2, programming of parameters is
always enabled.
Page 22 SITRANS LR 400 – INSTRUCTION MANUAL DRAFT 7ML19985FH01