Nonescaping
Keys
Copy
Printers
The
copy printer operation (using
the
3270 PRINTkey) works with
ASCII
hosts
just
as
it
does
in normal 3270
sessions,
except that
IDENT
(used to
alter
the
printer
address)
must be
done
in 3270 mode. The copy printer operation is normally
limited to
display
stations
and
printers
both
operating
in 3270
mode.
However, this
support
is
extended
to
allow
a 3270
terminal
operating
as
an
ASCII
terminal
to
perform
a local
copy.
The
target
printer
must
be
in 3270
mode,
and
the
IDENT
process
that
is
used
to
alter
the
copy printer
assignment
(if
necessary)
must be
done
while
the
3270 terminal is in 3270
mode
(connected
to a normal 3270
host
or
the
Connection
Menu).
Terminal-Attached
Printers
Some
IBM
terminals can have directly attached printers. When you
are
using this
type
of IBM
terminal
to
communicate
with
an
ASCII
host,
the
host
cannot
communicate
with
the
attached
printer. You
can
only
use
the
printer
to print
screen
images
from
the
terminal.
The
information
on
the
terminal
is
sent
from
the
terminal
to
the
printer.
Modem
Operations
When you
select
an
ASCII
host from
the
Connection Menu, the host is usually
called
automatically.
This
means
that
when
you
select
an
ASCII
host
with
stored
dial digits,
the
3174 control unit
selects
a
port
that
can
get
to
the
host.
The
call is
placed by
sending
the
dial string to the modem attached to the port.
You can manually dial an
ASCII
host by typing the dial digits at the keyboard.
When you
select
a host that must be dialed manually,
the
3174
selects
a port
that
can
get
to
the
host
and
establishes
a
connection
between
the
terminal
and
the
modem
as
if
the
modem
were
a host on a direct connection. You
can
then type
commands
to
the
modem
and
receive
its
responses.
Using The
ALT
Key
as
the
ASCII
Control Key
When the 3174 is customized to
use
the
ALT
key instead of the CTRLkey
as
the
ASCII
control key,
some
functions
are
limited or operate differently.
See
your
system
administrator for your 3174 customization information. This provides
an
interface
to
use
your
3270
terminal
as
an
ASCII
terminal
that
is
the
same
as
the
interface provided in microcode
releases
prior to 3174 Release B2. Following
are
limitations
associated
with using
the
ALT
key
as
the
ASCII
control key:
•
You
cannot
use
your
3270
terminal
as
a
Data
General
Dasher
D210
or
a DEC
VT220.
•
Extended
Graphics
characters
are
not
supported.
•
Control
mode
and
Control
Shift
are
not
valid.
• Modified
keyboards
are
mapped
as
if
the
keyboard
were
not modified.
•
Control
Indicator
is
not
displayed
in
the
OIA.
Nonescaping
Keys
Processing
an
accent
character
in
Extended
Graphics
mode,
or
from
the
main
keyboard in most
languages,
places
the
keyboard in
nonescape
mode.
(In
ASCII
documentation, this
mode
is
sometimes
referred
to
as
dead-key
processing.)
Pressing
the
accent
characters
causes
an indicator to
appear
in the OIAshowing
which
accent
character
was
pressed.
The
cursor
on
the
screen
does
not
move.
Chapter
2. Using a 3270 Terminal to Connect to ASCIIHosts
2-3
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