I want to controll a stepper motor by using the parallel or printer port. I am going to employ this stepper motor driver (MC3479: Stepper Motor Driver).
I want to know how to set up the parallel port in labView to send out the appropriate pulses to control the steps or the motor.
I want to jsut employ a parallel port cable without the use of a NI instrument hardware. Hopefully this is possible.
If you open the example with LabVIEW 7.1, it should upgrade the VISA functions to the current versions. I was able to open it just fine in LabVIEW 7.1 with NI-VISA 4.0. Please try it out and see if it works for you.
Chris R. Applications Engineer National Instruments
that link with updating the parallel port of PC just talks about the parallel port there is not any examples.
i want to use the out port.vi funciton to send the proper signals to the stepper motor driver. On is based on a rising edge triggered clock. The other two pins on the driver is just to pick direction and mode.
There has to be more to sending signals out of the parallel port with this function than a timed loop and correct sequence of hex letters to correspond to the signals needed.
Besides the VISA example, there's one at http://zone.ni.com/devzone/cda/epd/p/id/4319 with the old outport but there's not much to that either. With either one, all you can do is write a certain hex value. The only timing control you have is what windows gives you and that is not much. If you accurately timed pulses, you cannot do that in software.
