Hello everyone,
I am programming to a stepped motor. The motor can be triggered by input pulse via serial port or parallel port. The range of speed is between 1 and 99. The corresponding circuit pulse rate is as follows:
Speed 1 ===> 1.28 PPS Speed 2 ===> 1.28*2 PPS ... Speed 50===> 64 PPS ...
My question is how I can control the speed of the motor through a computer program.
Thanks
Could you describe your project a little more?
Do you have a normal stepper motor, and you want to build a driver for it and control it from an IBM compatible PC?
Do you have a stepper motor and a driver and you want to control it from a PC?
If you want to control it from a PC, what operating system are you using?
Do you want to control it from a microcontroller? If so, which one would you like to use?
How critical is the 1.28 PPS timing?
Is is a Unipolar or a Bipolar stepper motor. Any details or specs on the motor and what driver and controller board your using?
This is a 4-phase stepper motor. I don't have more specs about it.
I want to build a drive program, and control it from Windows 2000 or higher.
I don't have microcontroller for it. My task is to write a program that can control the speed of the motor.
The 1.28PPS timing is only information that is related to the speed from the manual.
Please give a help. Thank you so much
Thank you.
I will put more description about my project below:
Computer will generate pulses on Pin 4 of DB9 serial port. The input pulse, a square wave or a spike is needed to trigger the stepper motor driver circuit. The square wave starts at 10pps up to 500pps at 50% cycle. The voltage of the pulse can be between 5 vdc and 18 vdc.
Pin 4 : pulse input; Pin 5: ground; Pin 7: direction
It may be my question how to generate the square wave that can control the speed of the stepper motor.
I look forword to hearing from you, our expert. Thank you so much
Well, why not *add* a microcontroller? Sure seems to make more sense than using a Win2K/XP serial port to drive it directly -- especially since "DOS-like" serial port access isn't avaialble in 2K/XP.
Ok, I think you have a stepper motor and a stepper-motor driver, and you swant to use a PC running Windows 2000 to create pulses out the RS232 port to drive the stepper-motor driver.
If that's correct, I can't help you.
1) I know nothing about Windows 2000 2) I don't think trying to create precisely-timed pulses from a serial-port is a resonable thing to do. Sorry I couldn't be more help. If any of my assumptions are incorrect, please post correnctions and we can go from there.PolyTech Forum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.