Could i use MyDaq to catch 4 pwm input signals which for controlling Stepping Motor?

[SunnyKwok]

Dear,

       I got 4 Pwm input like picture below.

 

       I try digital count, also digital input with timestamp but not be able to catch them correctly.

       Is there any possible solution for this problem?

Thanks alot.

[Wranky]

Hi there,

If you want to do the edge counting for any purpose

You can try with DAQ assisant function and setting the Counter Input section as Edge Counting

Or with the more flexible DAQmx API:

Are you going to measure the digital count for 4 Axes sepearately? Because there's only one counter available on MyDAQ device:
http://www.ni.com/pdf/manuals/373060e.pdf

[SunnyKwok]

Thanks Wranky, I try DAQ assistant before but there is only 1 counter.