National Instruments NI-Motion - Manual (Page 265)

Chapter 15 Scanning
NI-Motion User Manual 15-14 ni.com
Figure 15-7. User-Defined Scanning Path
Using the contoured move gives you the greatest amount of flexibility
regarding the scan area and speed. However you lose the benefit of the
trajectory generator of the NI motion controller. Refer to Chapter 7,
Contoured Moves , for information about using contoured moves with
NI-Motion.