Can I plot aquired dyne speed on a predefined, scrolling, profile chart?

[Fuels]

The profile to be imported from excel, which I have no problem with. Speed to be plotted on the profile, with the profile used as a the guideline.

[Philip_Courtois]

Hi,

What do you mean with "guideline"? If you want to plot the profile together with newly acquired data, then you can just pick one sample at a time from the profile. If you want to plot the complete profile first and then append the data to the same graph, then you have to do some extra tricks.

Please see the attached "Profile.vi" example that shows the different solutions.

Best regards,
Philip C.
National Instruments

[Fuels]

Thanks for your help, this is close to what I'm trying to do.

Ideally, I'd like to plot an entire speed profile and append the data to the same graph. The profile is to be used a target speed and guideline for a driver on an automobile dynamometer. I'd also like to have indicators monitoring vehicle speed vs. profile to keep the vehicle within +/- 2 MPH limits, and counters recording any excursions above these limits for more than 2 seconds. I have had some success with overlaying an XY chart over the waveform graphs�but I'm not sure if this is the best way to approach this..Do you have any comments or suggestions? thanks...