WinCC Flexible Data Log

I have a data log that is setup as a circluar log so the old data will fall off after the file gets so big. 99% of the time the log is getting part data. My customer wants me to add the part number into the data log. If I add it to the data log will WinCC Flexible keep at least one value of the part number?

Hii

I thik it is possible ,if you used one internal string tag for part number.Link it with I/O field on the screen where customer can put the part number.configure this tag logged this tag in standared tag loging
Warm regards
Nehe

I think you are saying that you dont want to have part of the logfile overwritten.
Configure 2 logs.
One detailed with circular logfiles.
One condensed ("summary" ?) with neverending logfiles.