2.3
Parameter protection using a password
The instrument has a parameter protection function using a
password that can be personalised through the
t.PP
parameter.
To protect the parameters, set the desired password number
at parameter
t.PP
.
When the protection is active, press the
key for 5 s after
which the display shows
r.p
. Press the
key, display
shows
0
. Using the
/
keys, insert the programmed
password number and press the
key again.
If Password is correct the instrument displays the code of the
first parameter. Now is possible to program the instrument in
the same way previously described.
Password protection can be disabled by setting
t.PP
=
oF
.
PARAMETERS
(PROGRAM MODE)
INS. CORRECT
PASSWORD
0.
R.P.
30.50
PASSWORD
REQUEST
S.Lt1.
NORMAL MODE
Hold
for 2 s
Hold for 5 s
Increase
Value
Decrease
Value
Notes: 1.
All parameters are configured by default as “
pro-
tected
” so that by simply setting the
t.PP
param-
eter they are all protected by the Password.
2.
If the Password gets lost, just
switch OFF
then
ON the instrument
, push
key during the initial
test keeping it pressed for 5 s. In this way it is
possible to access all the parameters, verify and
modify the parameter
t.PP
.
2.4
Customized mode parameter programming
(parameters programming level)
When activated, the password protection acts on all parame-
ters. If, once enabled the Password through the
t.PP
param-
eter, it is necessary to make certain parameters program-
mable without protection while keeping the protection on the
others, follow the procedure below:
–
Enter the program mode using the
t.PP
Password and,
using the
/
keys, select the parameter that must be
accessible (no password protection).
–
Once the parameter is selected, if the
SET
LED
flashes
,
the parameter is programmable only entering the password
(“
protected
”). If
SET
LED
is steady ON
the parameter is
programmable without password (“
unprotected
”).
–
To change the parameter visibility, press the
key and
keeping it pressed press also the
button.
–
The
SET
LED
changes its state
indicating the new level
of parameter accessibility (
ON
=
Not protected
;
Flashing
=
Password protected
).
In case some parameters are set as
Not protected
, access-
ing the programming mode the display
first
shows the
Not
protected
parameters, then the
r.p
parameter through which
will be possible to access also the
protected
parameters.
Previous
Parameter
Next
Parameter
SET
PARAMETER
Increase
Value
Decrease
Value
up.
30.50
NOT Protected
PARAMETERS
NORMAL MODE
Hold
for 2 s
Hold for 5 s
PARAMETERS
GROUP
(PROGRAM MODE)
INS. CORRECT
PASSWORD
Increase
Value
Decrease
Value
0.
R.P.
PASSWORD
REQUEST
S.lt1.
f.Cnt.
2.5
Reset parameters to default value
The instrument allows to reset all parameters to the values
programmed in factory as default. To restore the default pa-
rameters value set value
-48
at
r.p
password request There-
fore, to make the reset to the default parameters, enable the
Password using the
t.PP
parameter so that the
r.p
setting is
requested, at this point insert
-48
instead of the programmed
access password. Once confirmed the password with the
key the display shows “
---
” for 2 s, then the instrument
resets all the parameters to factory default setting.
2.6
Keyboard lock function
It is possible to completely lock the keyboard. This function
is useful when the controller is used in an accessible area
and unauthorized changes must be avoided. To activate
the keyboard lock, program the parameter
t.Lo
to a value
different from
oF
. The
t.Lo
value is the keys inactivity time
after which the keyboard is automatically locked. When the
keyboard is locked, if any of the key is pressed, the display
shows
L.n
to indicate that the lock is active. To unlock the
keyboard, press contemporarily
+
keys and keep
them pressed for 5 s, after which the label
LF
appears on the
display and all the key functions will be available again.
ELETTROMECCANICA CDC S.r.l - TX40
- MANUAL rev.2 - PAG.
3
