21
4 - Operations
Engineering
Units
Degree
Centigrade
Degree
Fahrenheit
no units
defined
Degree
Fahrenheit
Ph
G
7)
Unit
°C
°f
none
°f
ph
4.4 SPECIAL FUNCTIONS
4.4.1 KEYPAD LOCK
To lock/unlock the keypad press
the keys
í
and
è
simulta-
neously for 2 seconds.
To confirm the keypad lock/unlock
the display flashes once.
The keypad lock/unlock can be
achieved by serial communications
too.
A
The keypad lock is main-
tained in case of power
failure.
4.4.2 OUTPUTS LOCK
The outputs are switched to the
OFF status by pressing the keys
í
and
%
together.
To unlock the outputs press again
the keys simultaneously.
The outputs lock/unlock can be
achieved by serial communica-
tions too.
A
The outputs lock/unlock is
maintained in case of
power failure.
1
2
AT
1
2
AT
operator mode
Press simultaneously
for 2 seconds
M1UK.ed5 14-05-2009 14:56 Pagina 21
