How to read multiple analogue signals ?

[commodore]

Hi,

I want too read 3 analogue signals at roughly the same time.

What I made works for a bit, it doesn't give any errors but this is not the result I am after.

In the attachment u can find my VI. Don't mind the lower part. That is a sequence, remove if u like or must.

Regards,

Stieve

[dkfire]

Could you try to explain what you are doing?

What are the 3 channel you what to read at the same time?

There are a lot of subvi's missing, so I can only comment on the top while loop.

You are using local variables too offen, get rid of some them.

And just a quick one, why are you changing the color of the bolean, and not the state? Use the state, true/false, to show different colors.

And for the releasing and clearing of your tasks, you are only clearing one task, not all 8. This will give you trouble later on.

[dkfire]

And one thing more, how are you stopping to top while loop ?

As you have wired a constant False to the stop condition, it will never be able to stop.

[commodore]

Hi,

Thanks for the responds.

I had it working to slow. I changed the 200mS to only 10 and now it runs more smooth.

Indeed, there a lot of subvi's missing because the lower part is the sequence from something and it not very important to the solution.

When I was making the subvi's is noticed that the local variables acted strange. But to be honest i don't know what else I can place instead of the local variables.

You say only 1 task will be cleared but isn't it so I clear all the tasks that have bin created in the for loop?

Regards,

Stieve

[commodore]

At the moment I am stopping by the stop button from labview ... I tried to make it differently but was not able to yet.

The program is stuck in somekind of loop, I will have to look into that.

[commodore]

ow yes, now u mention it. I indeed am only clearing one task. fixed it already 🙂

[dkfire]

Stopping a program with the toolbar stop button is a NO GO, particularly if you are using some hardware. 

And no you are not clearing all your task from the for loop, only the lastest one your have got a sample from.

[commodore]

I know that stopping the program from the tool bar is a no go but I noticed it a bit late that it didn't work anymore.

And for the second remark, that has bin fixed already. I placed the connection before using the tasks.

Regards,

Stieve

[dkfire]

What are your program expected to do?

What should be the program flow?

Take a moment to write down, and draw the program flow, not in LabVIEW, but on paper.

How are you stopping the subvi's?

How offen would you like to sample the inputs?

[commodore]

I have posted a vi of how my structure acts.

And why can't I post a snipped? It says it exceeds 10.000 characters ?

Regards,Stieve