Hi,I’ve created .tdms file using NI Measurement Studio 8.6.1 and NI DAQmx 9.0. I use the DAQmx function ConfigureLogging to create the file and after, I add custom proporties using the TDMSFile class of MeasurementStudio.I can easily read the file using the TDM Excel add-in or the TMDS file viewer example in LabVIEW.Now, I want to open the file using Matlab (I tried with R2008b, R2008a and R2007a). I’ve downloaded the Matlab TDM example and was able to open the SineData.tdm file provided with the example. But when I try to open the tdms file created with my application, the following line of code gives an error :>> calllib('nilibddc','DDC_OpenFileEx',Data_Path,ftype,1,pfile)-6210 DDC_CannotWriteToReadOnlyFile - The file passed to the library is read only and cannot be modified.I get this error even if the file is not read only and was not opened to be modified (the “read only” arg of DDC_OpenFileEx was set to 1 – only read access).From that, I receive error -6206 (DDC_InvalidFileHandle) for every other call the the nilibddc related to the tdms file.Also, I notice that a file named filename.tdms.log was created next to the filename.tdms file and contains the following error message :ERROR: TDS Exception in Initialize: Tds Error: TdsErrFileVersionTooNew(-2510).I did not found any information on this error. It is possible that MeasurementStudio creates a tdms format that was not yet supported by the nilibddc dll ?Is there any solution to this problem ? I found other topics with similar issues, but no solution !Regards,David

Measurement Studio for .NET Languages

Razor,

No problem, let me know if you end up using that code or not. It seems a lot of people have used it successfully.

Kyle Hartley
Senior Embedded Software Engineer

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Has anyone successfully modified this example so that it returns the data plus time tags associated with the data?

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