Additional Information
Closed loop steppers work differently from closed loop servos. Instead of adjusting the output on each PID iteration like a servo system, closed loop steppers will do a pull-in move at the end of a move to adjust for any difference between the target position and the encoder feedback. By default, it will attempt the pull-in move three times. This number can be adjusted to any number between 0 and 32,767 in Measurement & Automation Explorer (MAX) under
Axis Configuration»Stepper Settings tab. This number can also be adjusted using the
To Unsigned Long Integer Function in LabVIEW or the
flex_setu32
function in C/VB with the
Pull-in Tries
attribute.