again.
The
key
cannot
be
removed
while
it
is
in
the
ON
position.
Function
keys
Function
keys,
such
as
S1
and
S2,
permit
the
terminal
to
perform
certain
functions
or
operations
with
fewer
keystrokes
by
the
operator.
On
keyboards
that
have
a
Control
(Ctrl)
key,
the
S1
and
S2
functions
require
a
combination
of
two
keys:
1.
Press
and
hold
the
Ctrl
key
A
.
2.
Then,
press
the
S1
B
or
S2
key
C
.
If
no
Ctrl
key
is
present,
you
need
only
press
the
S1
or
S2
key.
Figure
114
illustrates
the
keys
on
a
typical
keyboard.
On
the
ANPOS
keyboard
v
The
Escape
(ESC)
key
functions
as
S1.
v
The
Enter
key
functions
as
S2.
Keyboard
lights
(status
indicators)
Four
status
indicator
lights
on
the
keyboard
provide
information
about
the
system:
v
Wait
A
v
Offline
B
v
Message
Pending
C
v
Unlabeled
(reserved)
D
Note:
The
fourth
light
is
unlabeled
and
not
currently
used.
A
Figure
113.
Manager's
lock
A
B C
Figure
114.
Example
of
S1
and
S2
function
keys
Updated
October
31,
2007
Chapter
6.
Operating
POS
I/O
devices
109
Содержание 4800-741
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