Compuprint 914 Manual de usuario Pagina 138

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This table lists the RS-232/C interface signals (Data RDY/BSY System):
Signal
Name
Pin
Number
Source
Local
Connect.
Remote
Connect.
Description
FRAME
GND
1 - The printer is shipped
with pin 1 connected to
the 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
Active LOW level.
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.
Remote
Connect.
Description
FRAME
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
until the printer is
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
A78401745-001
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