If the current system is logging data to CSV files, you will want to take a look at the Spreadsheet Object. Of course it may have been renamed to something more appropriate for the system, so a search of the LKS file for "spreadsheet" would save you some time in finding its name.
Once you find the Object, you can go in Edit mode and modify this to add new "fields" to the Spreadsheet. Online Help on Spreadsheet has more details.
-Khalid