Epson EPL-N1200 User Manual page 122

Signal
pin RS-232C
17 —
20 DTR
23 —
24 —
25 —
Current
loop Direction
TTY-TXD OUT
— OUT
TTY-RXD —
Return
TTY-RXD —
Return
TTY-RXD IN
Description
Transmits data. This pin
transmits serial data from
the printer to the
computer.
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 sending data
within 256 characters. This
function can be set on or
off with the default-setting
mode of the printer.
Received data. This pin
transmits serial data from
the computer to the
printer.
Transmits data. This pin
transmits serial data from
the printer to the
computer.
Received data. This pin
transmits serial data from
the computer to the
printer.
Specifications
A-9