11 Function group "diagnostics" (0A) Levelflex M
66 Endress+Hauser
11.5.2 Unlocking of configuration mode
If an attempt is made to change parameters when the instrument is locked, the user is automatically
requested to unlock the instrument:
"unlock parameter" (0A4):
By entering the unlock parameter (on the display or via communication)
100 = for HART devices
2457 = for PROFIBUS PA and FOUNDATION Fieldbus devices
the Levelflex is released for operation.
Hardware-lock:
After pressing the
O and S and F keys at the same time, the user is asked to enter the unlock param-
eter
100 = for HART devices
2457 = for PROFIBUS PA and FOUNDATION Fieldbus devices.
"
Caution!
Changing certain parameters such as all sensor characteristics, for example, influences numerous
functions of the entire measuring system, particularly measuring accuracy. There is no need to
change these parameters under normal circumstances and consequently, they are protected by a
special code known only to the E+H service organization. Please contact Endress+Hauser if you
have any questions.
11.6 Function "measured dist." (0A5)
Display of measured distance in the selected "distance unit" (0C5).
⇒
O and S and F press simultaneous
⇓
Please enter unlock code and confirm with F.
⇓
ENDRESS + HAUSER
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⇒
ENDRESS + HAUSER
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