hey guys,
I just bought a 4 wire stepper motor (bipolar i believe) from a surplus store, and I want to experiment with controlling the motor via labview.

As far as i know, the motor requires that i energize and de-energize 2 of the wires in a sequece, and have the other two inverted Red Blue / Yellow White). Energizing and denergizing in a sequence allows the motor to rotate 4 steps.

Now, I have a NI daq which outputs digital data no prob. I'm using 4 bits from one of the ports to connect to the 4 wires of the motor. LabView requires that i pass an array to the daq ( which i believe represents the data sent to the port).

I know the sequece of vectors that i want to send out to the daq to make this motor rotate a full revolution, my question is , what block can I use to basically change the output in a sequencial order (kind of like a loop).

I tried using a Stacked Sequence structure, however the outputs from one case interfere with the outputs from an case ( the wires interfere)

Any ideas...? I know my post is kinda hard to understand... just woke UP

 

ya now i am doing this experiment in my lab and i will tell when i finish...

cu

muhammed

PI Abu dhabi

 

You might want to find out more about driving steppers - http://home.cogeco.ca/~rpaisley4/Stepper.html. I don't think what you have got set up will work.