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Normally, the parallel port is used to connect the card to a printer.
The SBC-456/456E includes an onboard parallel port, accessed
through the CN4 connector, a 26-pin flat-cable connector. The CPU
card comes with an adapter cable, which lets you use a traditional
DB-25 connector. The cable has a 26-pin connector on one end
and a DB-25 connector on the other, mounted on a retaining
bracket.
The retaining bracket installs at an empty slot in your system's
chassis. It provides an external port that gives your parallel
peripheral access to the card's parallel port connector.
1. Find an empty slot in your chassis.
2. Unscrew the plate that covers the end of the slot.
3. Screw in the bracket in place of the plate.
4. Next, attach the flat-cable connector to the CN4 connector.
Wire 1 of the cable is red or blue, and the other wires are gray.
Make sure that Wire 1 connects to Pin 1 of the CN4 connector.
Pin 1 is on the right side of the CN4 connector.
Pin assignments
Pin
1
3
5
7
9
11
13
15
17
20
SBC-456/456E User Manual
Signal
Strobe
Data 1
Data 3
Data 5
Data 7
Busy
+Select
-Error
-Select input
Pin
Signal
2
Data 0
4
Data 2
6
Data 4
8
Data 6
10
-Acknowledge
12
Paper empty
14
-Auto feed
16
-Init printer
18~25 GND
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