How can I output a square wave to control a stepper motor using 7332 controller?

[WKOptro]

I have the following system configuration for testing a linear actuator (LA):

LabView 7.1

NI FlexMotion 7332 Motion Controller

NI Flex DMM 4070

The LA is a stepper motor with Step and Direction of Rotation inputs, as well as some discrete I/O for Power Enable and other functions.

The LA specification only requires that I send a 50% Duty Cycle square wave signal with frequency less than 300 Hz to it in order to make it step.  The LA has it's own power source.  I only need the 7332 to generate the drive signal and the DOR signal to the LA.  Using some of the example VI's, I can get the LA to work, but I will need to incorporate the functions in to a custom application. 

How can I weed through the numerous advanced functions the 7332 offers and only generate a DOR signal and a step command at a user-defined frequency.  How do I set up the controller for this?

Thanks

[Aaron B.]

Hello,

All the VIs that you can use to create a pulse train and digital I/O from your motion controller are found in the "Analog & Digital I/O VIs" sub-palette in the "Flex Motion" palette. Use "Load PWM Duty Cycle" and "Configure PWM Output" VIs to create the square wave. Use the "Set I/O Port Direction", "Set I/O Port MOMO", and "Set I/O Port Polarity" VIs to create digital output. I hope you find this information useful. You can learn about the specifics of these VIs and their inputs/outputs in the NI-Motion VI Help.


Regards,

Aaron B.
National Instruments