DMM DYN4 Series - Page 65

65
DMM Technology Corp.
DYN4 AC Servo Drive Instruction Manual
REV. ZM7-A10A
CT1
■ EXAMPLE 9
Condition:
Read servo motor absolute position
Method:
Call ReadMotorPosition32() subroutine function
Motor position stored in Motor_Pos32 variable as:
Motor_Pos32 = (long) [ -2^27 : 2^27-1 ] = [ -134,217,728 : 134,217,727 ]
7.7 Application Examples
■ EXAMPLE 10
Condition:
Read servo motor torque current
Method:
Call ReadMotorTorqueCurrent() subroutine function
Motor torque current stored in MotorTorqueCurrent variable as:
MotorTorqueCurrent = (short) [ -2^15 : 2^15-1 ] = [−32,767 : 32,766 ]
MotorTorqueCurrent represents a relative number according to the RMS current output by servo drive. This
value is different between each servo motor capacity and varies between the DYN2 and DYN4 servo drive.
The customer can measure the change in MotorTorqueCurrent variable to monitor relative current draw. Use
servo motor torque constant specication to calculate torque output.
The following three examples makes use of the sample code in Section 7.7A Appendix : C++ Code for Serial
Communication Protocol. All contents of the sample code must be copied to the program.
■ EXAMPLE 11
Condition:
Read servo drive Main Gain parameter
Method:
Call ReadMainGain() subroutine function
DYN drive Main Gain stored in MainGain_Read variable
Use the same subroutine format for all Parameter Read functions 0x18~ 0x1f.