Cabling and Pinouts
B–5
Publication 17706.5.20 - June 1997
Cabling and Pinouts for Parallel Port Connection
The parallel port interface connector is a DB-25 female with the
Centronics standard pinout shown in the table below. The polarity in
the fourth column applies when a signal is active. Negative polarity
indicates an active low signal, while positive polarity indicates an
active high signal.
Signal
I/O
Pin
Polarity
Strobe
I
1
-
Data 0
I/O
2
+
Data 1
I/O
3
+
Data 2
I/O
4
+
Data 3
I/O
5
+
Data 4
I/O
6
+
Data 5
I/O
7
+
Data 6
I/O
8
+
Data 7
I/O
9
+
Acknowledge
O
10
-
Busy
O
11
+
P. End
O
12
+
Select
O
13
+
Auto Feed
I
14
-
Error
O
15
-
Initialize Printer
I
16
-
Select Input
I
17
-
Ground
.
18 25
.