B&B Electronics PPIO Benutzerhandbuch

 

 

PPIO2899 Manual 

 

1

 
 

The PPIO allows you to connect your IBM PC (or clone) 

computer to the outside world using the computer’s parallel port. 
The eight I/O points can be used as either inputs or outputs. As an 
output they can control voltages as high as 50 Volts DC and can 
handle currents as high as 500 mA DC. As an input they can handle 
voltages from 0 to 50 volts with a threshold of 2.5 Volts DC. 
  
CAUTION: Each output of the PPIO can dissipate 1 Watt when 
used alone, however, all eight outputs together cannot 
dissipate more than 2.25 Watts. 
 
NOTE: The PPIO connects to the parallel port of your computer and 
uses most of the available pins on that port. You MUST use a cable 
that connects pins 1 through 17 of the DB-25 connector to the PPIO 
for it to work properly. To be safe you should use a cable that 
connects all 25 pins from connector to connector. 
 
NOTE: The PPIO can only be used with parallel ports that are in 
“compatible” or “normal” mode. It will  not function properly with 
parallel ports in ECP or EPP modes. The mode of the parallel port 
can be changed in the BIOS setup by pressing either the F2 key or 
DEL key just after the computer begins the boot procedure. 
 
 

The PPIO comes with sample DOS programs written in 

GWBASIC, QuickBASIC, Pascal, and C. These sample programs 
can be used "as is" to test the PPIO and to control and display the 
status of its I/O pins. Parts of these programs can be used in other 
programs to make it easier to interface to the PPIO. Also, by 
studying these programs a programmer can learn how to write code 
in any language to do a similar job.