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