Serial Interface - Epson EPL-N1600 Service Manual

EPSON EPL-N1600

1.3.2 Serial Interface

Type: RS-232C (conforms to EIA)
Transmission: Full duplex
Synchronization: Asynchronous
Transmission rates: 300 to 57600 bps
Parity bit: Even, Odd or NONE
Start bit: 1
Stop bit: 1 / 2
Data length: 7 or 8 bits
Protocols: •XON/XOFF control (software control)
(Robust mode is supported)
•DTR control (hardware control)
Connector: D-SUB 25pin
(17LE-13250-27(D57)
Pin Assignment: See the table on right.
Rev. A
Table 1-11. Serial I/F (RS-232C) Pin Assignment
I/O
Pin Signal *1
2 TXD Out Transmits data. This pin transmits serial data from
the printer to the computer.
3 RXD In Received data. This pin transmits data from the
computer to the printer.
5 CTS In Always ignored.
17 Out Transmits data. This pin transmits serial data from
the printer to the computer.
20 DTR Out Data terminal ready. This pin indicates whether or
not the printer is ready to receive data. If the
printer ready protocol is not selected, the printer is
always ready to receive data (this pin is always
HIGH). If the printer ready protocol is selected, the
printer can accept data when the pin level is HIGH
and cannot accept data when the pin level is
LOW. When the DTR signal goes LOW, the host
computer must stop sedning data within 256
characters. This function can be set on or off with
the default-setting mode of the printer.
23 Received data. This pin transmits data from the
computer to the printer.
24 Transmits data. This pin transmits serial data from
the printer to the computer.
25 In Received data. This pin transmits data from the
computer to the printer.
*1: "I/O" indicates a signal direction viewed from the printer.
Chapter 1 Product Description
Description
25