Epson EPL-6000 User Manual - Page 201

Serial interface pin assignments, Technical Specifications, signals is given relative to the printer.

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Interface Specifications Serial interface pin assignments The serial interface connector pin assignments and a description of the interface signals are shown in the table below. The direction of signals is given relative to the printer. Signal Pin 1 Signal RS-232C RS-422A Direction Description FG * * - Frame ground. Safety ground line. 2 TD l OUT Transmit data. This pin transmits serial data from the printer to the computer. 3 RD l (RD-) invert IN Receive data. This pin transmits serial data from the computer to the printer. 4 RTS * OUT Request to send. This pin is HIGH when power is on. 5 CTS l IN Clear to send. This pin indicates that the computer is ready to receive data from the printer. 6 DSR * IN Data set ready. This pin indicates that the computer is ready to communicate. 7 SG * * - Signal ground. This pin provides a ground for all the signal lines. 9 SD (SD-) invert OUT Send data. This pin sends serial data from the printer to the computer. Signal level is K-4224. B-12 Technical Specifications

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Interface Specifications
Serial interface pin assignments
The serial interface connector pin assignments and a description of
the interface signals are shown in the table below. The direction of
signals is given relative to the printer.
Signal
Pin
Signal RS-232C RS-422A Direction Description
1
FG
*
*
-
Frame ground. Safety
ground line.
2
TD
l
OUT
Transmit data.
This pin transmits serial
data from the printer to
the computer.
3
RD
l
(RD-)
IN
Receive data.
invert
This pin transmits serial
data from the computer to
the printer.
4
RTS
*
OUT
Request to send. This pin
is HIGH when power is on.
5
CTS
l
IN
Clear to send. This pin
indicates that the computer
is ready to receive data
from the printer.
6
DSR
*
IN
Data set ready. This pin
indicates that the computer
is ready to communicate.
7
SG
*
*
-
Signal ground. This pin
provides a ground for all the
signal lines.
9
SD
(SD-)
OUT
Send data. This
invert
pin sends serial data from
the printer to the computer.
Signal level is K-4224.
B-12
Technical Specifications