Local Operation - Endress+Hauser Fieldbus Levelflex M FMP43 Operating Instructions Manual

Levelflex M FMP43 with FOUNDATION Fieldbus
⇒
ENDRESS + HAUSER
–
+ E
Endress+Hauser
5.3

Local operation

5.3.1 Locking the configuration mode
The Levelflex can be protected in two ways against unauthorized changing of device data,
numerical values or factory settings:
"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 indicated on the display by the
be released again either via the display or by communication.
Hardware locking:
The device is locked by pressing the
on the display by the symbol and can only be unlocked again via the display by pressing the
S F
and and keys at the same time again. It is not possible to unlock the hardware by
communication. All parameters can be displayed even if the device is locked.
⇓
⇓
O S F
and and keys at the same time. The lock is indicated
Press
O S
and and
The LOCK_SYMBOL appears on the LCD.
Operation
symbol and can
F
simultaneously
O
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