STEPPER MOTOR

[hemantbhati]

sir I want to interface stepper motor directly from the computer....I  took stepper motor program from ni example code on parallel port interface....the program is running sucessful but not the motor...

[AnalogKid2DigitalMan]

Can you post the program?

How is the motor connected to the parallel port?

[ashwani]

yes, sir i'm send the link of that program....Actaully i'm very new to labview....i download the program from ni site itself...

http://zone.ni.com/devzone/cda/epd/p/id/3611

Is the motor will run without any necessary hardware i.e. i have the stepper motor only...?

[AnalogKid2DigitalMan]

You cannot connect the stepper up directly to the port- not enough voltage or current to drive it.

You could use something like this, depending on your stepper motor wiring, voltage and current requirements:

http://electronics-diy.com/electronics/stepper_motors.php

http://www.doc.ic.ac.uk/~ih/doc/stepper/control2/connect.html

You may have to adjust wiring to the port or modify the LabVIEW program to toggle the correct lines on the port.

Here's some other links:

http://www.google.com/search?hl=en&q=%22motor+driver%22+%2B+%22parallel+port%22

[hemantbhati]

Sir I got NIDAQ SCB-68....but i don't no how to configure it with the stepper motor ...please guide in this regard....

[hemantbhati]

My stepper motor specification is:
Permanent Magnet, Bifilar Wound, Two Phase	Steps Per Revolution : 200
Step Angle : 1.8o + 0.1o Non-cumulative	No. of leads - 6 On request - 4,8	1 Kg. cm. = 0.1 N.m = 13.9 Oz.-in.

Drive Circuit

[hemantbhati]

Sir i HAVE TBX-68T, SCB-68..........PLEASE GUIDE THAT WHICH THING I HAVE TO USE TO RUN STEPPER MOTOR....

Message Edited by hemantbhati on 04-16-2007 03:53 AM

[AnalogKid2DigitalMan]

The SCB-68 is just a connector block that is typically used with a DAQ card. It is not intended for use to connecting to the parallel port.

Do you have a DAQ card (if so which one) or are you trying to use the parallel port?

[ashwani]

my DAQ card no. is 4351

[AnalogKid2DigitalMan]

The 4351 has 8 digital I/O available, which you probably need to connect to your logic controller. I presume the controller has an input to control direction and another that takes pulses to move the motor. With only digital I/O (no timer/counter on the 4351) you can do a timed while loop to control speed, but dont expect it to be stable or fast (only up to a few hundred Hertz)