Motion control instructions Chapter 17
Rockwell Automation Publication 2080-RM001D-EN-E - February 2015 481
MC_ReadActualVelocity returns the actual velocity of the axis.
Tip:
MC_ReadActualVelocity is only applicable to feedback motion.
MC_ReadActualVelocity operations
The MC_ReadActualVelocity function block returns the value of the actual
velocity as long as Enable is set to True. If Enable is reset the data is no longer
valid, all outputs are reset to 0, Valid is set to False.
Before executing the MC_ReadActualVelocity function block, verify the axis is in
one of the following Axis States:
• Standstill
• Discrete Motion
• Error Stop
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