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Port Pinouts
25-pin Centronics Signal Source
10 10 nAck Printer
11 11 Busy Printer
12 12 PError Printer
13 13 Select Printer
14 14 nAutoFd Host
15 32 nFault Printer
16 31 nInit Host
17 36 nSelectIn Host
18-25 16, 17, 19-30 Ground
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 (DCEàDTE)
2 RXD Received Data (DCEàDTE)
3 TXD Transmitted Data (DTEàDCE)
4 DTR Data Terminal Ready (DTEàDCE)
5 Gnd Signal Ground
6 DSR Data Set Ready (DCEàDTE)
7 RTS Request to Send (DTEàDCE)
8 CTS Clear to Send (DCEàDTE)
9 RI Ring Indicator (DCEàDTE)