Pulscon LTC
Function group "diagnostics" (0A)
D
O
C
T
-0
0
9
4
A
0
6
/2
009
12
07
82
61
11.5
Function "unlock parameter" (0A4)
Set-
u
p can
b
e locked and
u
nlocked with this f
u
nction.
11.5.1
Locking of the configuration mode
The P
u
lscon LTC can
b
e protected in two ways against
u
na
u
thorised changing of
instr
u
ment data, n
u
merical val
u
es or factory settings:
"unlock parameter" (0A4):
A val
u
e
<> 100 for HART
(e. g. 99) or
<> 2457 for PROFIBUS PA
(e. g. 2456) m
u
st
b
e
entered in
"unlock parameter" (0A4)
in the
"diagnostics" (0A)
f
u
nction gro
u
p. The
lock is shown on the display
b
y the
sym
b
ol and can
b
e released again either via the
display or
b
y comm
u
nication.
Hardware lock:
The instr
u
ment is locked
b
y pressing the
O
and
S
and
F
keys at the same time.
The lock is shown on the display
b
y the
sym
b
ol and can
only
b
e
u
nlocked again
via the display
b
y pressing the
O
and
S
and
F
keys at the same time again. It is
not
possi
b
le to
u
nlock the hardware
b
y comm
u
nication.
All parameters can
b
e displayed even if the instr
u
ment is locked.
E
+
–
O
and
S
and
F
press sim
u
ltaneo
u
s
The LOCK_SYMBOL appears on the LCD.
E
+
–
