Revision February, 2017     9-1 
Chapter 9  Communications 
9.1  RS-485 & RS-232 Communication Hardware Interface 
This servo drive supports the serial communication of RS-485 and RS-232. Communication 
function enables the servo drive to access and change parameters inside the system. However, 
RS-485 and RS-232 cannot be used at the same time. Parameter P3-05 can use RS-485 and RS-
232 as the communication protocol. Followings are the wiring description. 
 
RS-232 
  Configuration 
 
 
NOTE
 
1)  15-meter communication cable is suitable for less interference environment. If the transmission 
speed is over 38400bps, the length of communication cable should be shorter than 3 meters so 
as to ensure the accuracy of transmission. 
2)  Numbers shown in the above diagram represent the pin number of each connector.