Fujitsu DL9300 User Manual page 210

User's Manual
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)
# indicates an open wire.
Wire 1 is unnecessary for the DTR (or RC) protocol.
Some computers may not require wire 2 .
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 (Pin 2)
RD (Pin 3)
DSR (Pin 6)
DTR (Pin 20)
RTS (Pin 4)
CTS (Pin 5)
CD (Pin 8)
SG (Pin 7)
INTERFACE INFORMATION
Printer
1
TD
RD
# DSR
2
DTR (RC)
# RTS
#
# CTS
# CD
SG
Printer (DTE)
TD
RD
DSR
DTR
RTS
CTS
CD
SG
D-7