savind data with time stamp

[stekkie]

Hello

I have this program (attached) with a 'write to measurment file'. The problem i have is that i want 4 signals saved and he only saves 1000 samples and then he stops. He just has to save all the samples from every channel.

And when I want to measure Dc voltages he only has to take 1 point per second or per minute. How can I change this easy?

[MikeS81]

Hi stekkie,

you write only the data from the last iteration to the file. Use a shift register to store your data over the whole time or write it in every iteration to the file.

Mike

[stekkie]

Hi,

I'm not getting it right i guess... i can't find a 'shift register' in the functions palette? and what do you mean with an iteration?

thx in progress!!

[MikeS81]

Hi stekkie,

to get a shift register, right click on your while loop and there it is. Here is an example for you.

Mike

[stekkie]

Thank you Mike

But it's seems not te be working over here... when I press the enable button he isn't logging the data. I tried to put the 'write to measurment file' in the loop but then i have the same problem. Maybe I have to change anything to box at the left where this stands in: "00:00:00,000 - DD/MM/YYYY"?

bye

[MikeS81]

Hi stekkie,

sorry for that, try this one.

Mike

Message Edited by MikeS81 on 05-06-2008 10:30 AM

[stekkie]

Hi Mike

I really appreciate your help but it's seems that the data stops just when it reaches the outgoing shift register. I runned with 'highlite execution' and saw that he stops there. I tried several things but it's not coming true.

thx in advance

stekkie

[MikeS81]

Hi stekkie,

i don´t know what you mean. I get data and can save it. Can you upload your vi, with your values saved as default?

Mike

[stekkie]

I don't get it either... Can you explain to me short what your circuit does? I am new to labview so I have to search everything for myself 🙂

[MikeS81]

Hi stekkie,

i get the data over several cycles with timestamp=current time and dt=1. I have only a simulated card. Where do you get an error?

Mike