Check TDMS File Format Version

Gleichman — Thu, 17 Dec 2009 16:49:26 GMT

With the advent of TDMS 2.0 is there anyway to check if a TDMS file is 1.0 or 2.0? Does it matter? The version setting of "TDMS Open" doesn't appear to have any effect when reading files. If it is set to 1.0 and a 2.0 file is opened (or vise-versa) no error is generated and all read VIs work correctly.

Re: Check TDMS File Format Version

blawson — Wed, 04 Feb 2026 22:20:12 GMT

this is apparently not available through the API functions. The internal structure document https://www.ni.com/en/support/documentation/supplemental/07/tdms-file-format-internal-structure.html describes how the version number is stored in each segment header, but thats not very easy to access.

the Open function would need to know what kind of file to open if it is creating a new file, so it probably doesnt matter for files already created.

topic Check TDMS File Format Version in LabVIEW

Check TDMS File Format Version

Re: Check TDMS File Format Version