Time interval for contoured move

I have a interpolator and it output the interpolated data with time interval 1ms. When I do the experiment using stepper motor controlled by 7344 (contoured move). the time interval is much bigger the 1ms, resulting in very low velocity. How to solve this problem? Increasing the time interval of interpolator? Is there anyone has any ideas? Thanks a lot!

In contouring mode you can set the time interval for the position buffer in the Configure Buffer function. Here is the parameter description:
Requested Interval (10 ms) is additional data for the Position
buffer type. The Position buffer type requires a Requested Interval parameter,
and indicates the time between contouring data points in milliseconds. For all
other buffer types, the Requested Interval parameter is ignored.
The controller uses the closest value it can that is greater than
or equal to the interval value you requested. Your time interval must be an even
multiple of the PID rate. Refer to the description for the Actual
Interval parameter for more information.
When used with Breakpoint or High-Speed
Capture, Requested Interval indicates how often, in
milliseconds, the onboard data is updated from the hardware, and the value is a
whole number.Please note that 10 ms is the fastest interval that you can set. If your data is sampled with a 1 ms time interval and you want to use the 10 ms time interval with your 7344 you simply should decimate your contouring data array by copying every 10th value to your contouring position array.
Best regards,
Jochen Klier
National Instruments Germany

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