Passing from max to min value

[Janitor]

Hi there.

Im build a program in LabView 8.5 and I have a problem.

Im calculating an angle to use it after as a comparison with another value to stop the loop. The problem is that when the value gets to 180º its supposed to continue from the -180 but instead he stays at 180 value.

The problem here is that if he doesnt get from 180 to -180 i cant activate the while loop again and i have part of my program stuck until i start the problem again :/.

If any1 could help im happy to answer any questions you may have from this msg and the problem here.

Thanks:)

[PeterFoerster]

Hi Jan,

I think it might be best to post an example to illustrate what you mean exactly. Can you give us a minimal working example that demonstrates this behaviour?

[crossrulz]

How are you calculating the angle?  Where is any of this data coming from?  Any code you can share to help enlighten us to the issue?

[Janitor]

Sorry there.

Its there on the 2 png, he cant get from 180 to -180 

[crossrulz]

I think I would do a shift so that all of the angles are positive.  All you need to do this is add 360 degrees to the negative angles.

[Janitor]

That solved the problem, thank you :).

If you could help with another thing i´d apreciate.

Do you know a way to create a indicator from a file path?

I want to show the progress of the motors but since i write and read one data at the time, he only displays what is in that read or write function. I can´t find a function that can read the hole value of the txt file and show its progress.

Ex: its at -100 at first, then it starts to walk forward, -98, -96 etc. Is there a function that i can use to get this as an indicator of this progress?

png in anex with the path file and write/read.

Ps: there is more write and read functions ahead of the print screen.

Thanks in advance

[PeterFoerster]

Right click >> create indicator.

BTW: if you pass the path to the open/create/replace VI you should use the reference it gives you for the write function. The way you programmed it, the o/c/p VI is obsolete.

BTWW: you can select a region in your BD and use Edit >> create SubVI to pack some of your code into sub VIs and make your code more readable.

[ben64]

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@Janitor wrote:

Hi there.

Im build a program in LabView 8.5 and I have a problem.

Im calculating an angle to use it after as a comparison with another value to stop the loop. The problem is that when the value gets to 180º its supposed to continue from the -180 but instead he stays at 180 value.

The problem here is that if he doesnt get from 180 to -180 i cant activate the while loop again and i have part of my program stuck until i start the problem again :/.

If any1 could help im happy to answer any questions you may have from this msg and the problem here.

Thanks:)

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There is a vi call Wrap Angle.vi in the Mathematics ->  Geometry  -> Angle palette that does that.

Ben64

[Janitor]

Thanks for the tips but right know i dont have time to build sub-VI´s.

In regards to the indicator, that only creates a indicator of the path file, what i want is the number inside the path, in this case in the .txt file.

[RavensFan]

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@Janitor wrote:

Thanks for the tips but right know i dont have time to build sub-VI´s.

In regards to the indicator, that only creates a indicator of the path file, what i want is the number inside the path, in this case in the .txt file.

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What do you mean by "the number inside the path"?

You had asked "Do you know a way to create a indicator from a file path?" and that is what you were given.