Pinout of the Printer Connector
(9 Way D-Type Socket)

     
                 
DB-9 Pin Name Dir Description
1 CD  <-- Carrier Detect
2 RXD  <-- Receive Data
3 TXD  --> Transmit Data
4 DTR  --> Data Terminal Ready
5 GND  --- System Ground
6 DSR  <-- Data Set Ready
7 RTS  --> Request to Send
8 CTS  <-- Clear to Send
9 RI  <-- Ring Indicator
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
 

More Info on Serial Port Operation

 
   
     
   
   
 

Copyright pc-control.co.uk 2008