How to skip data?

[taslim.reza]

Hi

I am working on a control system where a motor (bi-directional) will rotate for a specific data. When it starts rotating, motor should do this for a while and would not change it's rotation even if the data for opposite rotation comes. In that case, after starting rotation, controller has to skip out the next data for a while.

I have made a very simple program to explain the things. Please find the attached file. In loop#01 some random number will generate. In the loop#02, a comparison will be done. When A is true and B is false the output should be 5 and for opposite condition output is -5. When output is 5, this output should stay for a while (e.g 5sec) as 5. In this interval next upcoming 10 data will be skiped out (Since a wait VI is set in loop#01 and wait time is 500ms). I could not figure out how to do this. Could anybody plz help me out?

FYKI: you may find the output is -2 when both A and B are true. It may be happened because of converting the boolean into integer. I dont think it is something should be worried about.

Thanks at advance-

Taslim 

[Vincent90]

Hi Taslim,

If i well understood your issue, i think your architecture is wrong.

Try out an Event architecture ; while loop with event loop inside.

When your event happen, skip your data into the event loop. Shift registers can be useful !

Another way to think about your problem (which can be combined) is to see that as states machine. (Rototion trigo +, Rotation trigo -, initialization(where you rotate only one direction), Stop)

Hope this help.

BR,

Vincent

[crossrulz · Accepted solution]

From what I've seen, you will be much better off using a State Machine.  One of your states should be to read the data.  You will also have a wait state where you should look for UI events (event structure).  Another state for setting the output control.

[taslim.reza]

Thanks Vincent. 🙂

[taslim.reza]

I tried State Machine and it worked nicely. Thanks a lot crossrulz.