Compuprint 914N, User Manual

Page: 138 / 146

This table lists the RS-232/C interface signals (Data RDY/BSY System):
Signal
Name Pin
Number Source
Local
Connect.
R e m o t e
Connect.
Description
FRAME
GND 1 - The printer is shipped
with pin 1 connected to
th e frame ground
(protective ground).
TXD 2 PRT PRT Not used.
RXD 3 HOST D A T A
SET
Receive data.
GND 7 - - This pin is the common
ground signal.
ERROR
14 - PRT
A c t ive LOW l evel.
Indicates that the printer
is disabled because of a
paper out condition or
printer malfunction.
DTR 20 PRT PRT Normally HIGH (ON).
With hardware data flow
selected.
This table lists the RS-232/C interface signal (XON/XOFF System):
Signal
Name Pin
Number Source
Local
l onnect.
R e m o t e
Connect.
Description
F R A M E
GND 1 - The printer is shipped
with pin 1 connected to
the frame ground
(protective ground).
TXD 2 PRT PRT Used to transmit data
RXD 3 HOST DATA
SET
Used to receive data.
RTS 4 PRT PRT Active HIGH (ON) level
signal. It is held ON
u n t i l t h e p ri n ter i s
disconnected.
CTS 5 HOST DATA
SET Active HIGH (ON) level
signal. Indicates that the
host or data set is ready
to receive data from the
printer.
Appendix C
C.6
A78401740-001