A 2nd counter on a USB6008 using DIO's?

hi,
Quick question is it possible to built code in Labview, that would act as a second counter, using digital I/O's?
I want to count the number of pulses for two difference pulse trains, and the use the number of pulses to determine the position of the 2 stepper motors?
Any help greatly appreciated!
Peter

Peter,
You can certainly count pulses from a digital input line in software. However, the DI lines on the USB6008 are software timed and have a fairly low update rate. Without looking it up, I think the rate is ~100 Hz. If your pulses can ever occur much faster that, you will miss pulses and lose track of your position.
Lynn

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