part one to be executed and after certain time part two to be executed

[satish_21]

I will put your requirement in a better way. You have two loops and you want to start the loop2, after 10s of execution of loop1. 

A simple solution would be to notify loop2, once the threshold time is reached in loop1. Check out the attached code.

Thanks,

Satish

[Diya13]

Hi Satish,

Thankyou for the Reply.

Your reply surely helps.But I'm stuck with a wierd problem now.

I've attached my code in the previous post, could you please let me know why am I not getting any output from the loop 1, (I'm trying to output a pulse from the loop1)

Thankyou

Regards,

Divya

[satish_21]

Hi Divya,

Can you be more specific? Which is your 1st loop and point out the corresponding waveform indicator. I see only 1 independent for loop (it has a for loop inside).

If you are talking about the waveform connected to DAQ box outputs 2, that is because, you are creating an array with 5 as the constant element. Hence, your waveform will be a single line, like a DC voltage

Satish

[Diya13]

Hey Satish,

Yes I was talking about the same waveform. Here, I created a waveform with 2 elements( 0 and 5), So it should not be a constant DC waveform right?

Divya

[satish_21]

Hi Divya,

No. You are wiring 5 for all the iterations. There is a simpler way to do this. Use the 'Get Pulse Pattern' from Signal Generator palette. Refer image.

Satish

[Diya13]

Hey Satish,

Thankyou.I'll try this..

But in my Make waveform.vi , I tried outputting value 0 for the first few seconds and looped it in a for loop.. and hten value 5 for the next few seconds and looped it too in the for loop and then followed by 0 again and a 5.. So where exactly are you saying that I'm outputting a single constant value 5??

Thanks,

Divya

[Mark_Yedinak]

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@Patricia B wrote:

Hello,

My suggestion would be to perhaps use a sequence structure with the Wait (ms) Vi in the first frame and the loop that needs to wait 7 secs in the second frame. Below are some articles that discuss the sequence structure and the Wait (ms) VI:

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I'm very surprised to see a NI employee suggesting this as a solution. I would expect that NI suggest using best practices and proven architectures for solutions. There is a long list of reasons to avoid using sequence structures. A state machine architecture would be the preferred method. State machines are much easier to maintain, extend and control than sequence structures.

[Diya13]

Hey Satish,

This is what I've tried with the Pulse pattern.Vi .But when I run it for a single time, I dont see an oputput on my scope again! 😞

Attached Code .

Regards,

Divya

[Patricia B]

Hello Diya,

For clarification purposes, would you mind posting a screenshot of the portion of your VI that you are referring to as the 'first part' highlighted in some way?

Thanks,

Patricia B.

[satish_21]

Divya,

I'm getting a crank waveform with output2.vi. The waveform graph indicator is showing the same. Check whether your scope is in the propper settings. A triggered acquisition would be the best.

P.S : Since , I didn't have a random period.vi, I used my own values. But that doesn't have anything to do with your issue.

Satish