setting TDMS properties

[faustina]

is there a way to set the "source date/time" and "source name" properties of a TDMS file in LabVIEW 2016?  Win10

[Tepig]

Properties in DIAdem - Overview

You can use script name "sourceoriginalname", try it.

[faustina]

how would this change if I'm trying to set the properties while the file still resides on the PXIe?  The PXIe controller is using LabVIEW RT 2016.

[cbutcher]

I think the following might be what you're looking for.

Note that I couldn't get what I thought you were looking for by setting "sourceoriginalname", it seems like DIAdem overwrites that on opening?

Produces:

(the file name I used was test.tdms)

[faustina]

as you can see from the PNG file, I've done that.  I know that the file contains data and that it get FTPed from the PXIe to the PC Host.  But the change in properties at the PXIe side doesn't seem to happen.  I know that the Shared Variables have data because I've check the contents in the Distributed Sys Mgr.

[cbutcher]

The snippet you show here has a couple of things that I'm curious about, but perhaps they're not your problems. Maybe you can explain them and I can try understand better:

• You have an array of TDMS references. Is this because you're setting the same properties for a bunch of files?
• You set "title", not "name". Is that intentional? Note, it will set a different user-defined property, not the built-in one you previously seemed interested it
• You don't pass the paths out of TDMS Close. Are you sure you're not copying them somewhere else, before you write the properties? i.e. there isn't a race condition?

[faustina]

yes, I am setting the description, title, and storage date/time the same for an array of TDMS files and closing them.  The data in the files is collected before the properties are set.  Therefore, closing them after setting the properties should not be a problem.  After the main VI on the PXIe has stopped running, then the files are programmatically FPTed to the PC Host.  In that process the filename is changed.  Does this reset the properties I previously set?

[cbutcher]

I don't believe that should cause a problem (although the filename is used as a property that was previously mentioned, "sourceoriginalname").

I was more checking this bit (quoting disappeared on my computer so copying below...):

After the main VI on the PXIe has stopped running, then the files are programmatically FPTed to the PC Host.

I.e. that you are sure the files are closed having had their properties written before you copy the files. If you're sure that's the case (they're copied from disk after they're fully written and closed) then I have no further suggestion. Perhaps if you shared some more of the code someone here might see something, but I don't know where to suggest your problem is.