JUKI 6100 Operation Manual
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(4)
Description
of signals
(a)
STROBE
This is
a
pulse
to read
data. The
pulse
width must
be
0.5!s or
more
at tne
receiving
the host
computer. It is normally
kept
at
HIGH,
and when it is
shifted from
HIGH
to LOW, data is latched.
(b)
DATA I
-8
These
signals
provide
information
of the lst to 8th
bit of
parallel
data, and
stay HIGH
if data is I while stay
LOW if data is 0. Each
bit
must
ris€ 0.5rrs
earlier
than the falling edge of
a STROBE signal and must
be s€cured 0.5!s
later than the risirg edge.
The DATA
8 is ignored since they
are usually us€d
for 7
bit ASCII codes.
(c)
ACKNLG
This
is an acknowledging
pulse
having
approx. 7!s
pulse
width, which is
pro-
duced
at the
end
of data input. When
this
puls€
is
produced,
another data
can be transferred.
(d)
BUSY
This is a DC level
signal to indicate whether
the
printer
is ready to accept
data entry or not. Data
entry can be made while
this signal stays LOW,
pro-
vided that
data
entry
can be made for DC 1 even
when the signal is HlcH.
(e)
PRIME
If
this signal is set to LOW,
the
printer
control unit will
ltop
its
operation.
Accordingly, il this LOW
signal
is
received during
printing
or while any func-
tion is in operation,
such operation can not
be
guaranteed.
If this signal is
set to HIGH
again, the
printer
will be initialized
to restore its original
status
obtained when
it is first
powercd
up. Normally,
the signal is
s€t
to HtcH,
(f)
sr.cr
This is
a
DC level
signal which shows
that the
printer
is operative.
(c)
PE
This
is a
DC
level signal which tells
that
paper
has run
out. It becomes HIGH
in
the absence of form and becomes
LOW in the
Dresence of form.
(h)
ERROR
This is
a
DC level
signal which indicates
that the
pdnter
is in error
status. It
becomes LOW in error
status while it becomes
HICH in normal status.
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