Sine Wave Generation

[task]

Hi,

I'm using the attached vi to generate a sine wave to control my motor. My problem is at the very beginning, the motor jumps causing a great amount of torque on the part under test...this cannot happen since this is a durability test. I'm new to using the Contour Position commands and I cannot tell what is causing this. I realize the buffer is getting re-written after the first half of the sine wave is written but I'm not sure how to eliminate the jump. I tried sending a smaller amplitude wave for the first iteration but the jump still occurs. Any suggestions would be appreciated.

Thanks.

Labview 7.1.1

Motion 7.4.0.3002

MAX 4.1.0.3001

[task]

Sorry...jumped too quick...I just changed the cosine function to sine wave generation and the jump at the beginning went away. Problem with that example is it starts out sending a negative point first. Should have analyzed the actual data being sent out!

Thanks to all who took the time to read my post.