Block
Data
Transfer
SEND DISPLAY (Ec
d)
From
a programexecuting
in
a host computer, you can
trigger
a block
transfer
of
data
from
the
workspace to
the
host computer by issuing
the
following escape sequence:
Ec d
This escape sequence
is
only responded to when received over a
datacomm
line;
it
is
ignored
if
entered
through
tJ:1e
keyboard
or
issued from a
user
key (unless Block mode
is
enabled).
With
the
following exceptions,
the
resultant
data
transfer
is
performed
as
though
the.
key
had
been pressed:
1.
The
cursor
is
not
repositioned. The
data
transfer
always begins
at
the
current
cursor
position.
2. A non-displaying
terminator
isnever inserted
at
the
cursorposition
as
part
of
the
operation
(the
AutoTerm(J)
configuration
parameter
is ignored).
The
((Ec
d"
sequence also temporarily disables
the
keyboard so
that
the.
key
cannot
be used
until
the
current
data
transfer
iscompleted.
If
the
((Ec
d"
sequence isreceived while
an.
key
data
transfer
is
in
progress,
the
escape sequence is ignored.
Note
that
an
«Ec
d"
sequence
resets
the
((block
trigger
received" flag.
This
means,
for example,
that
if
you
are
using
the
DCI
handshake
and
the
terminal
receives a
<DCI>
followed by
the
((Ec
d",
it
((forgets"
that
a block
trigger
(the
<DCI»
was
just
received
and
thus
will
not
send
the
data
immediately.
The
terminal
must
receive
another
<DCI>
before
it
will
start
the
data
transfer.
TRANSMIT-TYPE FUNCTION KEY DEFINITION STRING TRANSFER
If
a function key of
Transmit
type
is pressed
in
Remote mode,
its
definition
string
will be
transmitted
to
the
host computer,
as
a block.
It
can
also be
transmitted
using
the
following
escape sequence:
Ec
&f
<x>E
where ((x"
is
the
identification
number
(1-8)
of
the
function key.
When
in
Block
Page
mode,
the
end
character
is
the
configured block
terminator;
otherwise
the
ending
is
CR (LF).
USER KEY DEFINITION STRING TRANSFER
When
the
User
Key
menu
isdisplayed
and
the
terminal
is
in
Remote mode,
both
the.
key
and
((Ec
d"
sequence cause one or more of
the
function key definitions to be
transmitted,
in
the
escape sequence form. The
Au
t
oTerm(
J)
and
Cl
earTerm(K)
entries
on
the
Terminal
Configu-
ration
menu
are
ignored
under
these circumstances.
9-18
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