Rockwell Automation 2080-LC50 Micro830 and Micro850 Programmable Controllers User Manual - Manual (Page 124)

110 Rockwell Automation Publication 2080-UM002F-EN-E - December 2013
Chapter 7 Motion Control with PTO and PWM
Use PTO for PWM Control The following example shows you how to use a PTO axis as a PWM.
Launch Connected Components Workbench and create the following
ladder program.
MC_Power_1
MC_Power
EN
Axis
Enable_Positive
Enable
Enable_Negative
PWM0
TRUE
TRUE
TRUE
Axis
ENO
Status
Busy
Active
Error
ErrorID
1 Enable/power up the PWM axis immediately after going to RUN mode. PWM axis will remain powered ON (until Program mode,
and so on).
__SYSVA_FIRST_SCAN
MC_WriteParameter_1
MC_WriteParameter
EN
AxisIn
Parameter_Number
Execute
Value
PWM0
Update_PWM_Duty_Cycle
1005
G_PWM_Duty_Cycle
Axis
ENO
Done
Busy
Error
ErrorID
2
Continually use MC_WriteParameter (Parameter 1005) to change the Duty Cycle from global variable G_PWM_Duty_Cycle
(example: 0.5 => 50%)
MC_ExecutionMode 0
Update_PWM_Duty_Cycle Update_PWM_Duty_Cycle