Save chart data to the file constantly

[AnaKra]

Hi,

Yes, I tried that and it gives an error. I discribed it earlier today.

I am now configured the program via DAQmx Configure Logging as crossrulz proposed and left it for several hours to see if it is able to write for a long time. 

[M.Ali · Accepted solution]

Hello

Please see the attached snippet.

 It's based on crossrulz suggestion.

[AnaKra]

Basically, I am trying to achieve a functionality of Signal Express software. However, it also cannot save more than 65000 symbols per text or excel file, but it saves it in graph form so I can go through the whole time while the graph data was recorded. If that saving into the file is a real problem in Labview in any case, then saving a graph data with the possibility of scrolling through it is a solution. Do you possibly have any ideas on implementing that? 

[Bob_Schor]

Dear Helsinki,

   You really need to attach your VI or Project (if there are multiple files, combine them into a ZIP file).  Many of us stream data to disk in various formats (in my case, I'm collecting 16-24 channels of data at 1KHz on a LabVIEW RT system + asynchronous "Event" data such as digital I/O transitions, TCP-ing it to a PC, and streaming the sampled data in one file and the Event data in a second, .XML, file).  So what you are trying to do is definitely do-able and even simple, but there are Traps for the Unwary.  Without seeing your code, we cannot point out the Traps.

Bob Schor

[NIquist]

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@Helsinki wrote:

Basically, I am trying to achieve a functionality of Signal Express software. However, it also cannot save more than 65000 symbols per text or excel file, but it saves it in graph form so I can go through the whole time while the graph data was recorded. If that saving into the file is a real problem in Labview in any case, then saving a graph data with the possibility of scrolling through it is a solution. Do you possibly have any ideas on implementing that? 

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65000 sounds suspiciously like an Excel limitation (a plain text file should work though).  Versions before Excel 2007 have that limit:  https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=excel%2065000%20row%20l...