Disabling And Enabling Programming - Siemens sitrans LR 400 Instruction Manual And Users Manual

Disabling and Enabling Programming

To prevent unauthorized personnel causing programming errors through the display
module, set a customer code – a personal, freely selectable code number up to 9 digits. 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.
Note:
The customer code is activated 10 minutes after you have programmed
Parameter 5.2 Customer Code.
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 using the Code Input
Parameter (see Parameter 5. 1 on page 62).
The programming lock will be released for approximately 10 minutes.
When you return to the multi-display or enter a number in the Code Input parameter
which is different from the customer code, or do not operate the device for 10 minutes,
the programming lock is enabled.
Note:
If Customer Code (Parameter 5.2) is 0, programming of parameters is always
enabled. We strongly recommend that a customer code be entered after all
programming is completed to secure the programmed values from change.
Page 29 SITRANS LR 400 – INSTRUCTION MANUAL 7ML19985FH04