load s curve time

[millibyte]

HalloI busy with labview NI-Motion with a NI PXI 7330 to control a stepper motor. I’m new with labview and so I started with a example that I found (single axis test.flx) but the problem is that it make no difference when I change the S Curve Time. I changes the Position indicator in a chart to visualize the s curve. When I changed the s curve time I can’t see any changing in the chart. Does someone have a  suggestion? what's going wrong?

[Jochen]

There is probably nothing going wrong, but with low values of the s-curve time, it's probably a bit hard to see the effects in the velocity vs. time diagram. If you increase the parameter significantly, you should be able to see the change in the velocity profile.

Here you can find more detailed information about the s-curve algorithm that is used on NI-Motion boards.

Kind regards,

Jochen Klier

National Instruments