Chapter 9 Communications; Rs-232 Communication Hardware Interface - Delta ASD-A2-0121 Series User Manual

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 or
RS-232 as the communication protocol. Followings are the wiring description.
RS-232

Configuration
Note:
1) The cable length can be up to 15 meters (49.21 feet) when the servo drive is installed in a quiet
environment. If the transmission speed is over 38400 bps, however, a cable within 3 meters (9.84 feet) is
recommended to ensure data transmission accuracy.
2) Numbers shown in the above diagram represent the pin number of each connector.

Chapter 9 Communications

CN3
1394 Connector
4 (Rx)
2 (Tx)
1 (GND)
D-Sub
9-Pin Connector
3 (Tx)
2 (Rx)
5 (GND)
9-1