Cp6606 & datalogging

Hi all. Dipping my toes in the beckhoff flavoured codesys world with a beckhoff Cp6606 and tc3. Fair to say abit of a curve relative my default rockwell background. One of the features I assumed would be canned is data logging, but no.. Beckhoff supplied a sample routine which allows a creation of a csv file, so seemed no problem. Got it working as a FB, but have found random events like changing the program / viewing the resultant csv via ftp seem to break the file, and stops recording from that point. Anyone been through this and have a solution?

Cheers chris

I would use AdvancedHMI for the software to log the data. Just an option:
https://sourceforge.net/projects/advancedhmi/

Here is a video with communication to TwinCat:
https://www.youtube.com/watch?v=oHoPLYDVpa4

Regards,