Chapter 10 Communication
JD Servo supports powerful communication capabilities and adopts the control mode based on an object
dictionary. All controls come down to the configuration of internal objects. The configuration can be
implemented by multiple methods including RS232, RS485 and CANopen. It supports the connection of
multiple sites and simultaneous operation of multiple communication ports.
Notice:
1.DIN1 is set as driver enable function and DIN3 is set as operation mode control function by default.Before
using communication control,it must cancel the functions of these two DIN.
2.There are internal unit and engineering unit.All the parameters use internal unit when using communication
control,so it need to convert the unit.About more details about the relationship of the units please refer to
Appendix.
3.When using read/write function of SDO of CANopen,RS232 and RS485 communication,make sure there is
only one command in the network at the same time,and good communication error handling, etc., in order to
avoid communication into an infinite loop.
10.1 RS232 Communication
10.1.1 RS232 Communication Interface
The wiring diagram between PC and single JD servo is as following:
PC JD Servo RS232(X3)
2 RxD ---------------------------------- TXD 2
3 TxD ---------------------------------- RXD 3
5 GND --------------------------------- GND 5
The wiring diagram between PC and multiple JD servo is as following：（ D05.15 must be set as 1,and restart
driver after setting）
Note:1.It is the same way to connect JD servo to HMI or other controllers.(The PIN definition of HMI or other
controllers may be different from PC’s).
2.When using the wiring of multiple JD servo,all the JD servo will receive the command at the same time.
10.1.2 RS232 Communication Parameters
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