VCDS Release 11.11 PDF Manual Printing Instructions: - Ross-Tech

Data Logging cont. - Section 8-B
Dual ECU's: For vehicles with dual ECU's (like the Audi R8), data from both ECU's can be
logged simultaneously by accessing [31 – Engine Other] as shown here:
The [Marker] button places a sequential number in the file when you click it. This can be
helpful for data analysis.
The [Browse] button allows you to specify the location for your logs. By default, Log Files
will be placed in the Logs sub-folder in your PC, typically: C:\ross-tech\vcds\Logs\
By default, the name of the log file will be the controller number followed by each group
number that you are logging. The name can be changed to anything you'd like. If you reuse
an existing filename, your new data will be appended to that file.
Switch to Basic Settings is not currently available while logging (but may be added later).
However, you can start a log while you're in Basic Settings. If VCDS keeps insisting that it
can't open a Log file, you're probably missing the LOGS folder and should re-install VCDS.