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ASDA-A3

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Wiring

3.6 Wiring for the CN3 connector (RS-485 / high-speed

communication)

When the servo drive is connected to the PC via the CN3 connector, you can operate the servo

drive, PLC, or HMI through Modbus using the assembly language. The CN3 connector supports

two commonly used communication interfaces, RS-485 and CAN, allowing you to connect

multiple servo drives simultaneously.

Note:

1. A3-L: single port (Pin 1 - Pin 8); supports RS-485 but does not support high-speed communication

(CANopen).

2. A3-M: dual ports; support both RS-485 and high-speed communication (CANopen).

3

(1) CN3 connector (female); (2) CN3 connector (male)

Pin assignment:

Pin No.

1

2

3, 7

4

5

6, 8

9

10

11, 15

12

13

14, 16

Signal

CAN_H

CAN_L

GND_ISO

RS-485-

RS-485+

-

CAN_H

CAN_L

GND_ISO

RS-485-

RS-485+

-

Description

CAN_H bus line (dominant high)

CAN_L bus line (dominant low)

Signal GND

For the servo drive to transmit the data to differential

terminal (-).

For the servo drive to transmit the data to differential

terminal (+).

Reserved

CAN_H bus line (dominant high)

CAN_L bus line (dominant low)

Signal GND

For the servo drive to transmit the data to differential

terminal (-).

For the servo drive to transmit the data to differential

terminal (+).

Reserved

Note: refer to Chapter 9 for the RS-485 wiring.

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