ADLINK PCI-8144 - Manual (Page 47)

Operation Theory 37
b) For a bell curve, we define its shape parameters as below: (the
PCI-8144 dosen’t support this mode)
X Tacc: Acceleration time in second
X Tdec: Deceleration time in second
X StrVel: Starting velocity in PPS
X MaxVel: Maximum velocity in PPS
X VSacc: S-curve part of a bell curve in deceleration in PPS
X VSdec: S-curve part of a bell curve in deceleration in PPS
If VSacc or VSdec=0, it means acceleration or deceleration use
pure S-curve without linear part. The Acceleration chart of bell
curve is shown below: