DP-300 Multiprotocol Fast Ethernet Print Server User’s Guide
Port Pinouts
11
Serial Port
The table below shows the pinout of the print server’s 9-pin RS-232 serial port. The print server’s
serial port is a DTE (Data Terminal Equipment) port, and should be connected to a DCE (Data
Communications Equipment) serial port on your printer. Consult your printer’s documentation
for detailed information on how to connect the print server to your printer.
9-pin
Signal
Function
1
DCD
Data Carrier Detected (DCE
Æ
DTE)
2
RXD
Received Data (DCE
Æ
DTE)
3
TXD
Transmitted Data (DTE
Æ
DCE)
4
DTR
Data Terminal Ready (DTE
Æ
DCE)
5
Gnd
Signal Ground
6
DSR
Data Set Ready (DCE
Æ
DTE)
7
RTS
Request to Send (DTE
Æ
DCE)
8
CTS
Clear to Send (DCE
Æ
DTE)
9
RI
Ring Indicator (DCE
Æ
DTE)
