Local Operation - Endress+Hauser Levelflex M FMP41C Operating Instructions Manual

Levelflex M FMP41C PROFIBUS PA
⇒
ENDRESS + HAUSER
–
+ E
Endress+Hauser
5.3

Local operation

5.3.1 Locking of the configuration mode
The Levelflex can be protected in two ways against unauthorised changing of device data, numerical
values or factory settings:
Function "unlock parameter" (0A4):
A value <> 2457 (e.g. 2450) must be entered in "unlock parameter" (0A4) in the
"diagnostics" (0A) function group. The lock is shown on the display by the
released again either via the display or by communication.
Hardware lock:
The device is locked by pressing the
The lock is shown on the display by the
O S F
by pressing the , and
by communication. All parameters can be displayed even if the device is locked.
⇓
⇓
O S F
, and keys at the same time.
symbol and can only be unlocked again via the display
keys at the same time again. It is not possible to unlock the hardware
O S
,
The LOCK_SYMBOL appears on the LCD
symbol and can be
F
and press simultaneous
Operation
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