8-22 
 
8-1-5 Example of RS-485 communication speed control 
1. Definitions of default digital input pins 
 
 
2. Setting parameters 
Parameters  Description  Setting  Description 
Cn001  Control mode selection  1  Speed control 
Cn002.1 
Auxiliary function-input 
contact CCWL and CWL 
function selection 
1 
Do not use digital input contactsCCWL andCWL 
to controlforwardandreverse directiondrive 
prohibited, ignore theforwardandreverse 
directiondrive prohibited function 
Cn036 Station number setting  1  
Cn037.0 
Modbus RS-485 
communication transmission 
rate 
1 9600 
Cn038.0  Communication protocols  6  8 , N , 2 ( Modbus , RTU ) 
Sn205.0 
Speed command 
acceleration/deceleration 
method 
2 
0: Do not use the speed command 
acceleration/deceleration function 
1: Use the speed command one-time smooth 
acceleration/deceleration function 
2: Use the speed command straight line 
acceleration/deceleration function 
3: Use the S-type speed command 
acceleration/deceleration function 
Servo ON (SON)
Abnormal alarm reset (ALRS)
PI/P switch (PCNT)
CCW direction drive prohibited (CCWL)
CW direction drive prohibited (CWL)
External torque limit (TLMT)
Speed command reverse (SPDINV)
Servo stop (LOK)
Emergency stop (EMC)
Internal speed command selection 1 (SPD1)
Internal speed command selection 2 (SPD2)
Control mode switch (MDC1)