Chapter 16 PLC Function ApplicationsC2000 Plus 
 
16-148
16-9  Explanation of various PLC mode controls (speed, torque, homing, 
and position)
 
The torque mode and position mode are based on FOC vector control and speed mode also 
supports FOC vector control. Control therefore cannot be performed successfully unless finishing 
motor parameter auto tuning ahead of time for the torque mode and position mode, and the speed 
mode based on FOC.   
In addition, motors are classified as two types: IM and PM. For IM motors, the auto tuning of the 
motor parameter will be enough. For PM motors, after completing motor parameter auto tuning, the 
auto tuning of motor origin angle of deviation should be completed as well. Please refer to Chapter 
12-1 Pr. 05-00 for detailed explanation.   
NOTE: If a PM motor belongs to Delta's ECMA series, motor parameters can be directly input from 
data in the servo motor catalog, and parameter study will not be needed.   
Control methods and settings are explained as follows:   
Speed control:   
Register table for speed mode:   
Control special M 
Special 
M 
Description of Function  Attributes 
M1025  Drive frequency = set frequency (ON) / drive frequency =0 (OFF) 
RW 
M1026  Drive operating direction FWD(OFF) / REV(ON) 
RW 
M1040  Hardware power (Servo On) 
RW 
M1042 Quick stop  
RW 
M1044 Pause (Halt) 
RW 
M1052  Lock frequency (lock, frequency locked at the current operating frequency) 
RW 
Status special M 
Special 
M 
Description of Function  Attributes 
M1015  Frequency attained (when used together with M1025) 
RO 
M1056 Servo On Ready 
RO 
M1058  On Quick Stopping 
RO 
Control special D 
Special 
D 
Description of Function  Attributes 
D1060  Mode setting (speed mode is 0) 
RW 
Status special D 
Special 
D 
Description of Function  Attributes 
D1037 
Converter output frequency (0.00–600.00) 
RO 
D1050  Actual operating mode (speed mode is 0) 
RO