help required stepper motor programming

[hrkarthik.raman]

Dear forum members,

The stepper motor i am using is bipolar, 2 phase, current rating is 2.8 amps, voltage rating is 2.3v and 10kgcm torque.
I am using a M542 stepper motor driver.
I am using Atmel 89C51 microcontroller to move the motor thru the driver.
I have included the motor specifications sheet and the datasheet of the driver and also the interfacing schematic i have followed.
i am using assembly language programming and compiling programs in keil.
In my program, the motor is moving continuously with no stop.
pls can u post sample codes to move and stop and move the motor in accordance with the interfacing diagram.

thanking in anticipation,
Karthik Raman

 

[ucsam]

it would be better if u could post the code as well..or maybe attach it, cause the fault might be in your code.

 

[assasinsareus]

Hello,

Could it be that your outputting the signals so fast that the motor cannot keep up and is essentially stalled? With stepper motors its normally a good idea to ramp the speed up and down so as to try and avoid this problem. You should be able to test for a stalled condition by removing the power and seeing if the motor becomes easier to turn or has a slightly less cogging action.