Outputing Pre-programmed Serial Commands

[timinnesota]

Good Afternoon,

I'm connecting a stepper motor to LabVIEW and was able to make it work with the basic serial write and read example vi very nicely.  I was just curious if there was a way to store  a couple separate sets of code (essentially programs) that could be fed to the serial port on command with LabVIEW depending on the users need.

If I was too vague, let me know.

[AndrewAlford]

Do you mean like having different controls on a front panel and based on which control the user operates will result in different commands being sent to the serial port? You are kinda vauge.

[Conseils]

In short yes.

You can store text in strings and arrays just like other software languages and also pull data from text files or other file formats. These could concievably be stored command sequences for your stepper motor which could then be sent down the serial port under software control.

Check out the help files on strings and then follow it up with arrays, after that look at reading in files. The help files are really excellent, one of the softwares strong points.

Looks like your project is growing all the time, hope all the stuff in the previous question hit the mark.

Message Edité par Conseils le 01-06-2006 11:16 PM

[Henrik_Volkers]

you got it working in basic (not the language) , so now it's time to think about your dataflow stucture.

You want multiple moves (commands) for your stepper ... do you need feedback (at least error checking) ?  

Or a variable time delay between your steps? Or ....

I would use a producer- consumer structure   and an queue of cluster that defines one complete move (and error condition handling).

Just my thoughts

[timinnesota]

Yes, that's exactly what I mean.  I would love it if I could have different controls on a front panel and depending on which control the user operates it would result in different pre written commands being sent to the serial port.

I'm going to dig into this issue this morning, but I'm fairly new to LabVIEW, and would appreciate and assistance on the matter.  If anyone has an example or something similar, I would love to see it.

Thanks!