Endress+Hauser Proline Prosonic Flow W 400 - Protecting Settings from Unauthorized Access; Write Protection Via Access Code

Commissioning Proline Prosonic Flow W 400 HART
116 Endress+Hauser
10.7 Protecting settings from unauthorized access
The following options exist for protecting the configuration of the measuring device from
unintentional modification after commissioning:
• Write protection via access code for the local display and Web browser
• Write protection via write protection switch
• Write protection via keypad lock
10.7.1 Write protection via access code
The effects of the user-specific access code are as follows:
• Via local operation, the parameters for the measuring device configuration are write-
protected and their values can no longer be changed.
• Device access is protected via the Web browser, as are the parameters for the measuring
device configuration.
Defining the access code via the local display
1. Navigate to the Define access code parameter (→  113).
2. Maximum of 16-digit character string comprising numbers, letters and special
characters as the access code.
3. Enter the access code again in the Confirm access code parameter (→  113) to
confirm.
 The  symbol appears in front of all write-protected parameters.
• Disabling parameter write protection via access code →  66.
• If the access code is lost: Resetting the access code .
• The user role with which the user is currently logged in is displayed in Access
status display parameter.
• Navigation path: Operation → Access status display
• User roles and their access rights →  66
• The device automatically locks the write-protected parameters again if a key is not
pressed for 10 minutes in the navigation and editing view.
• The device locks the write-protected parameters automatically after 60 s if the user skips
back to the operational display mode from the navigation and editing view.
Parameters which can always be modified via the local display
Certain parameters that do not affect the measurement are excepted from parameter write
protection via the local display. Despite the user-specific access code, they can always be
modified, even if the other parameters are locked.
Parameters for configuring
the language
Parameters for configuring
the local display
Parameters for configuring
the totalizer
↓ ↓ ↓
Display language Format display Control Totalizer
Contrast display Preset value
Display interval Reset all totalizers
Defining the access code via the web browser
1. Navigate to the Define access code parameter (→  113).
2. Define a 16-digit (max.) numeric code as the access code.