Allen-Bradley Micro830

130 Rockwell Automation Publication 2080-UM002K-EN-E - March 2019
Chapter 7 Motion Control
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