Steppper motor control via RS232

hii
i am new to this stepper motor controlss section.
i am using vaccum compatible stepper motor .. the whole manual of this is ayyached alongwith..and the program made by
me is also attached along with..i had run the other stepper motor with the same code..i do not know where is the problem..
please help me..
thanks
do not hesitate to give kudos

Hey Sahil,
Thanks for posting on the forums. Hopefully this was the thread you were referring to in the Engineer Awesome ni.com/community group discussion. Sorry that you did not receive any feedback from your issue, that is fairly rare.
Anyway, in regards to the issue at hand. The fact that you are using a stepper motor is not as significant as the fact that you are communicating to your instrument (in this case I would image that it is your motor controller/drive) via RS232. I hate to point you to another resource, but the instrument control forum may be the most appropriate location for your query.
In the Engineer Awesome discussion, you mentioned that you were able to control the device through a third party application but you were having trouble doing so in LabVIEW. My first reaction after looking at your code is termination characters. Does your controller expect any sort of termination character? Also, are you sure that you are sending the same commands via LabVIEW as you are in the third party application? If you use a port sniffer application to monitor the traffic over your RS 232 connection when your third party application is running and compare that to when your LabVIEW code is running (you could use NI SPY for this when you are using NI VISA), how do the two situations compare.
If I had to guess, I would think that you are not sending commands/termination characters to your instrument that it is expecting.
Lastly, a more detailed description of what your issue is, what you have tried, and what is and isn't working would really help everyone understand what is going on and how to help. As it is, it is unclear what the issue is or what you are trying to accomplish.
Hope this helps.
-Ben
WaterlooLabs

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Please mark as answer if I solved your problem. :)

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Thanks for the answer.
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