User`s guide

14
Port Pinouts
B
4 P
ORT
P
INOUTS
This appendix shows the pinouts of the DP-300 parallel and serial printer
ports.
Parallel Ports
The following table lists the pinouts of the print server’s 25-pin parallel port
connector (identical to the connector used on most personal computers), as
well as the 36-pin Centronics connector used on most printers.
Signal names beginning with
n
are active-low signals.
25-pin Centronics Signal Source
1 1 nStrobe Host
2 2 Data 1 Bi-directional
3 3 Data 2 Bi-directional
4 4 Data 3 Bi-directional
5 5 Data 4 Bi-directional
6 6 Data 5 Bi-directional
7 7 Data 6 Bi-directional
8 8 Data 7 Bi-directional
9 9 Data 8 Bi-directional
10 10 nAck Printer
11 11 Busy Printer
12 12 PError Printer