Endress+Hauser Levelflex FMP55 Operating Instructions Manual page 43

Levelflex FMP55 PROFIBUS PA
Endress+Hauser
Disabling write protection via access code
If the  symbol appears in front of a parameter on the local display, the parameter is
write-protected by a device-specific access code and its value cannot currently be changed
via the local display →  42.
The locking of the write access via local operation can be disabled by entering the device-
specific access code.
1. After you press , the input prompt for the access code appears.
2. Enter the access code.
 The -symbol in front of the parameters disappears; all previously write-
protected parameters are now re-enabled.
Deactivation of the write protection via access code
Via local display
1. Navigate to: Setup → Advanced setup → Administration → Define access code
→ Define access code
2. Enter 0000.
3. Repeat 0000 in the Confirm access code parameter to confirm.
 The write protection is deactivated. Parameters can be changed without entering
an access code.
Via an operating tool (e.g. FieldCare)
1. Navigate to: Setup → Advanced setup → Administration → Define access code
2. Enter 0000.
 The write protection is deactivated. Parameters can be changed without entering
an access code.
Write protection via write protection switch
Unlike parameter write protection via a user-specific access code, this allows the user to
lock write access to the entire operating menu - apart from the "Contrast display"
parameter.
The parameter values are now read only and cannot be edited any more (exception
"Contrast display" parameter):
• Via local display
• Via PROFIBUS PA protocol
• Via PROFIBUS DP protocol
Operation methods
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