Panasonic KX-P3696 Operating Instructions - Page 63

Connector, signals

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Connector pin signals STB...STROBE •This is a synchronizing input signal to read data into the printer. *This signal is normally high. Data is read in when it is low. DATA 1-DATA 8 *These are the input signals which carry the 8 data bits of information. • •The signal is read in synchronization with the STROBE pulse. A high level indicates a logical "1". ACK...ACKNOWLEDGE •This is an output signal to the computer indicating that the printer is ready to receive the next data. When the condition becomes true, the signal goes low. •The ACK signal is automatically sent whenever the printer is switched ON LINE and the BUSY signal drops from high to low. BUSY •This output signal indicates the status on which the printer cannot receive data. *The signal is high under the following conditions: 1. receive buffer full 2. printer is processing data 3. printer is OFF LINE 4. printer is in an error condition PO...PAPER OUT •This output signal indicates the absence of paper and goes high during a "Paper Out" condition. SLCT...SELECT *This output signal is high in the ON LINE mode and low when OFF LINE. •The printer enters the ON LINE mode: 1. when the printer is turned on 2. when PRIME is received 3. when the RESET command is received 4. when the ON LINE switch is pressed *The printer enters the OFF LINE mode: 1. when the printer is out of paper 2. when the printer is switched OFF LINE 0 AUTO FEED XT (AFXT) *While this input signal is low, one line feed (LF) command will be added to each carriage return (CR). 'Auto LF setting in the Function mode can alter the response by the printer to an AFXT signal. If auto LF is ON, the printer will perform a CR+ LF regardless of the level of the AFXT signal. When auto LF is OFF, automatic action is disabled. SG...SIGNAL GROUND •The twisted pair return wires (pins 19-30) are connected to signal ground. FG...FRAME GROUND • Frame ground is the same as chassis ground. +5 V *This is for evaluation only. It should not be used to supply power for external equipment. PRIME *This input signal is normally high and goes low to reset the printer. It can be received anytime during printer operation. ERROR 'This output signal is normally high, and goes low when an error occurs. An error condition can be caused by: 1. a "Paper Out" condition 2. the printer is OFF LINE 3. an overload condition exists SLCT IN *This input signal is normally low, and goes high when using the Setup Disk. Timing Chart (When normal printing code is received) DATA1 8 TB BUSY ACK T1 T2 T3 T5 T4 T1 0 5µs (Min) T2 0 5µs (Min) T3 0.5µs (Min) 74 5 ps (Max) T5 1 ms or less when buffer is not full Timing Diagram 63

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0
Connector
pin
signals
STB...STROBE
•This
is
a
synchronizing
input
signal
to
read
data
into
the
printer.
*This
signal
is
normally
high.
Data
is
read
in
when
it
is
low.
DATA
1
—DATA
8
*These
are
the
input
signals
which
carry
the
8
data
bits
of
information.
•
•The
signal
is
read
in
synchronization
with
the
STROBE
pulse.
A
high
level
indicates
a
logical
"1".
ACK...ACKNOWLEDGE
•This
is
an
output
signal
to
the
computer
indicating
that
the
printer
is
ready
to
receive
the
next
data.
When
the
condition
becomes
true,
the
signal
goes
low.
•The
ACK
signal
is
automatically
sent
whenever
the
printer
is
switched
ON
LINE
and
the
BUSY
signal
drops
from
high
to
low.
BUSY
•This
output
signal
indicates
the
status
on
which
the
printer
cannot
receive
data.
*The
signal
is
high
under
the
following
conditions:
1.
receive
buffer
full
2.
printer
is
processing
data
3.
printer
is
OFF
LINE
4.
printer
is
in
an
error
condition
PO...PAPER
OUT
•This
output
signal
indicates
the
absence
of
paper
and
goes
high
during
a
"Paper
Out"
condition.
SLCT...SELECT
*This
output
signal
is
high
in
the
ON
LINE
mode
and
low
when
OFF
LINE.
•The
printer
enters
the
ON
LINE
mode:
1.
when
the
printer
is
turned
on
2.
when
PRIME
is
received
3.
when
the
RESET
command
is
received
4.
when
the
ON
LINE
switch
is
pressed
*The
printer
enters
the
OFF
LINE
mode:
1.
when
the
printer
is
out
of
paper
2.
when
the
printer
is
switched
OFF
LINE
AUTO
FEED
XT
(AFXT)
*While
this
input
signal
is
low,
one
line
feed
(LF)
command
will
be
added
to
each
carriage
return
(CR).
'Auto
LF
setting
in
the
Function
mode
can
alter
the
response
by
the
printer
to
an
AFXT
signal.
If
auto
LF
is
ON,
the
printer
will
perform
a
CR+
LF
regardless
of
the
level
of
the
AFXT
signal.
When
auto
LF
is
OFF,
automatic
action
is
disabled.
SG...SIGNAL
GROUND
•The
twisted
pair
return
wires
(pins
19-30)
are
connected
to
signal
ground.
FG...FRAME
GROUND
•
Frame
ground
is
the
same
as
chassis
ground.
+5
V
*This
is
for
evaluation
only.
It
should
not
be
used
to
supply
power
for
external
equipment.
PRIME
*This
input
signal
is
normally
high
and
goes
low
to
reset
the
printer.
It
can
be
received
anytime
during
printer
operation.
ERROR
'This
output
signal
is
normally
high,
and
goes
low
when
an
error
occurs.
An
error
condition
can
be
caused
by:
1.
a
"Paper
Out"
condition
2.
the
printer
is
OFF
LINE
3.
an
overload
condition
exists
SLCT
IN
*This
input
signal
is
normally
low,
and
goes
high
when
using
the
Setup
Disk.
Timing
Chart
(When
normal
printing
code
is
received)
TB
DATA1
8
BUSY
ACK
T1
T2
T3
T5
T1
0
5μs
(Min)
T2
0
5μs
(Min)
T3
0.5μs
(Min)
74
5
ps
(Max)
T5
1
ms
or
less
when
buffer
is
not
full
T4
Timing
Diagram
63