Fujitsu DL3700 User Manual - Page 215

interface.

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goy' User's Manual INTERFACE INFORMATION Host TD (Pin 2) RD (Pin 3) DSR (Pin 6) DTR (Pin 20) RTS (Pin 4) -# CTS (Pin 5) CD (Pin 8) SG (Pin 7) 5 0 Printer TRDD # DSR DTR (RC) # RTS # CTS # CD SG # indicates an open wire. Wire 0 is unnecessary for the DTR (or RC) protocol. Some computers may not require wire 0. DSR-enabled control enables communication using an RS-232C interface. The CTS and DSR input control signals are enabled; CD is ignored. DSR must be high when the printer receives data. If the printer has data to be transmitted to the computer, the printer transmits the data when both DSR and CTS are high. When using DSR-enabled control, use a straight-through cable to connect to a DCE (data communications equipment) device. Use a null-modem cable to connect to a DTE (data terminal equipment) device, as shown below. Host (DTE) TD (Pin 2) RD (Pin 3) DSR (Pin 6) ( DTR (Pin 20) RTS (Pin 4) CTS (Pin 5) 4 CD (Pin 8) A SG (Pin 7) >< • Printer (DTE) TD RD ) DSR DTR A RTS • ) CTS > CD SG D-7

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INTERFACE
INFORMATION
TD
(Pin
2)
RD
(Pin
3)
DSR
(Pin
6)
DTR
(Pin
20)
RTS
(Pin
4)
—#
CTS
(Pin
5)
CD
(Pin
8)
SG
(Pin
7)
Host
0
Printer
TD
RD
#
DSR
DTR
(RC)
#
RTS
#
CTS
#
CD
SG
#
indicates
an
open
wire.
Wire
0
is
unnecessary
for
the
DTR
(or
RC)
protocol.
Some
computers
may
not
require
wire
0.
DSR-enabled
control
enables
communication
using
an
RS
-232C
interface.
The
CTS
and
DSR
input
control
signals
are
enabled;
CD
is
ignored.
DSR
must
be
high
when
the
printer
receives
data.
If
the
printer
has
data
to
be
transmitted
to
the
computer,
the
printer
trans-
mits
the
data
when
both
DSR
and
CTS
are
high.
When
using
DSR-enabled
control,
use
a
straight
-through
cable
to
connect
to
a
DCE
(data
communications
equipment)
device.
Use
a
null
-modem
cable
to
connect
to
a
DTE
(data
terminal
equipment)
device,
as
shown
below.
Host
(DTE)
TD
Printer
(DTE)
TD
RD
(Pin
2)
RD
(Pin
3)
DSR
6)
)
(Pin
(
DSR
DTR
20)
><
(Pin
DTR
RTS
4)
(Pin
•
A
RTS
CTS
)
(Pin
5)
4
•
CTS
CD
8)
CD
(Pin
A
>
SG
(Pin
7)
SG
goy'
User's
Manual
D-7
5