Xerox 300x 用户手册
A
Technical Notes
A-8
Phaser 300X Color Printer
Serial port signals
The following table shows the printer’s serial port pinout.
Serial port signal descriptions
Signal name
Pin #
Printer I/O
Description
DCD
1
In
Data carrier detect
RxData
2
In
Received data
TxData
3
Out
Transmitted data
DTR
4
Out
Data terminal ready
Gnd
5
—
Signal ground
DSR
6
In
Data set ready
RTS
7
Out
Request to send
CTS
8
In
Clear to send
RI
9
Out
Ring indicator