8-1 
 
Chap 8 Communication function 
8-1 RS-485 Communication Function ............................................................................................... 8-3
8-1-1 RS-485 Communication Wiring .................................................................................. 8-3
8-1-2 RS-485 Communication Related Parameters .............................................................. 8-5
8-1-3 RS-485 Communication Protocol and Format ............................................................ 8-9 
8-1-4 Example of RS-485 communication position control ............................................... 8-18 
8-1-5 Example of RS-485 communication speed control ................................................... 8-22
8-1-6 Example of RS-485 communication torque control .................................................. 8-24
8-2 CANopen communication function  Only JSDG2S contains this function ............................ 8-26
8-2-1 CANopen Overview .................................................................................................. 8-26
8-2-2 CANopen Basic Features .......................................................................................... 8-26
8-2-3 CANopen Parameter Setting ..................................................................................... 8-27
8-2-4 CANopen Protocol .................................................................................................... 8-30
8-2-5 CANopen Servo Control ........................................................................................... 8-36
8-2-6 CANopen Object List ................................................................................................ 8-36
8-3 EtherCAT communication function  Only JSDG2S-E(L) contains this function ................... 8-37
8-3-1 EtherCAT Overview .................................................................................................. 8-37
8-3-2 EtherCAT Basic Features .......................................................................................... 8-37
8-3-3 EtherCAT Parameter Setting ..................................................................................... 8-40
8-3-4 EtherCAT Status Display ........................................................................................... 8-43
8-3-5 EtherCAT Communication ........................................................................................ 8-49
8-3-6 EtherCAT servo control ............................................................................................. 8-54
8-3-6-1 State Machine .............................................................................................. 8-54
8-3-6-2 Servo Mode ................................................................................................. 8-58
8-3-6-3 Unit Condition ............................................................................................. 8-60