labview slow speed monitoring! Why?

[Eram]

I make a sin wave by a func-generator and I want to monitor it via DAQ card in Labview. I can see the signal in waveform graph box but when I change the signal's frequency and amplitude it doesn't change quickly in waveform graph! It changes after I stop and restart the program. Actually I have 2 problems:

1. My waveform graph in Labview doesn't change as quickly as I change input signal.
2. My waveform graph in Labview just show the first signal I set. After changing signal, the display shows the first signal yet and is slow and fixed in window like a picture! please help me to solve my problem...thanks alot

[Yamaeda]

Can you post the VI?

[Norbert_B]

Please post your approach.

I assume that you do not update the graph, but write the data only once.

Norbert

[Eram]

sure.i attached it.thanks

[Eram]

i press the botton "continious running' so i expect than exactly after changing signal i could see it in my graph in labview.

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@Norbert_B wrote:

Please post your approach.

I assume that you do not update the graph, but write the data only once.

Norbert

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[Norbert_B · Accepted solution]

None of the graph elements are inside a loop. So they will be written only once per VI execution.

I didn't look into the code about functionality, but it lacks a profound architecture.....

Norbert

[Eram]

oh!yes.thanks.so why my graph doesn't change rapidly even after next execution??

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@Norbert_B wrote:

None of the graph elements are inside a loop. So they will be written only once per VI execution.

I didn't look into the code about functionality, but it lacks a profound architecture.....

Norbert

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[Norbert_B]

Please look into your code and read it by dataflow. You should be able to answer your question yourself when doing so!

[Eram]

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@Norbert_B wrote:

Please look into your code and read it by dataflow. You should be able to answer your question yourself when doing so!

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excuse me what do you mean by ''reading dataflow?'' how can i read it and how it helps me?

now i don't have access to my DAQ CARD to check it. 

[Eram]

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@Norbert_B wrote:

Please look into your code and read it by dataflow. You should be able to answer your question yourself when doing so!

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@Norbert_B
i made changes you noticed and i could see waveform changes now! thnx 

but now i have new Question.i have 4-DAG assistant but  just one of them is  ON at the moment.and error cluster of  3others show me this message : "THE FUNCTION IS BUSY" what's wrong with it?

i attach the Vi