7-3    
RS-232/RS-485 communication parameter 
 
Parameter  Name & Function  Default Unit 
Setting 
Range 
Control
Mode
Servo ID number 
★ 
Cn036 
When using Modbus for communication,each servo 
units has to setting a ID number. repeated ID number 
will lead to communication fail. 
1 X 
0 
│ 
254 
ALL 
Modbus RS-485 braud rate setting 
Setting Explanation 
0 4800 
1 9600 
2 19200 
3 38400 
4 57600 
★ 
Cn037.0 
 
5 115200 
1 bps 
0 
│ 
5 
ALL 
PC Software RS-232 braud rate setting 
Setting Explanation 
0 4800 
1 9600 
2 19200 
★ 
Cn037.1 
 
3 38400 
1 bps 
0 
│ 
3 
ALL 
RS-485 communication selection 
This parameter can be set to RS-485 communication 
written to the EEPROM or SRAM. 
Setting Explanation 
0  Write to EEPROM 
★ 
Cn037.2 
 
1  Write to SRAM 
0 X 
0 
│ 
1 
ALL 
Communication RS232 is read and written to the 
selection of EPROM. 
Setting Explanation 
0  JSDEP Command address (E8~EC) 
★ 
Cn037.3 
 
1 
JSDEP Command address (70~74) 
* While setting to 1, Pn407~Pn410 are 
prohibited from applying. 
0 X 
0 
│ 
1 
ALL 
Communication protocol 
Setting Explanation 
0  7 , N , 2 ( Modbus , ASCII ) 
1  7 , E , 1 ( Modbus , ASCII ) 
2  7 , O , 1 ( Modbus , ASCII ) 
3  8 , N , 2 ( Modbus , ASCII ) 
4  8 , E , 1 ( Modbus , ASCII ) 
5  8 , O , 1 ( Modbus , ASCII ) 
6  8 , N , 2 ( Modbus , RTU ) 
7  8 , E , 1 ( Modbus , RTU ) 
★ 
Cn038 
8  8 , O , 1 ( Modbus , RTU ) 
0 X 
0 
│ 
8 
ALL 
Communication time-out dection 
★ 
Cn039 
Setting non-zero value to enable this function, 
communication Time should be in the setting period 
otherwise alarm message of communication time-out 
will show. Setting a zero value to disable this function.
0 sec 
0 
│ 
20 
ALL 
Communication response delay time 
★ 
Cn040 
Delay Servo response time to master control unit. 
0 
0.5 
msec 
0 
│ 
255 
ALL