5.6  Connecting MP-11x to Computer for Serial 
Communication 
The procedure below describes how to connect the MP-11x serial (RS-232) interface to a 
computer.  
This cabling requires  a straight-through PS/2 to DB-9 cable adaptor  with the  following 
connector pinouts:  
Figure  5-11: PS/2 to DB-9 Adaptor Connector Pinouts 
   
Figure  5-12: PS/2 Connector Pinouts 
 
 
 
Notes: 
•  This procedure is not applicable to MP-112 as this model does not provide an RS-
232 serial interface port. 
•  The PS/2 to DB-9 cable adaptor is not included in the MP-11x package. 
 
  To connect MP-11x to a computer for serial communication: 
1.  Connect the PS/2 connector  on one end of the cable to the MP-11x RS-232 port 
(labeled RS-232). 
Figure  5-13: Connecting the Serial Port 
 
2.  Connect the DB-9 connector at the other end of the cable to either the COM1 or COM2 
RS-232 communication port on your computer.