Siemens SINUMERIK Commissioning Manual page 165

The Trace options should be selected in consultation with system or OEM development
personnel.
The log created is used to investigate software problems and must be sent to system or
OEM development personnel for analysis and diagnostics purposes.
Creating the log file
The log file is called debug.out or _debug.out and is saved in the following directory:
..\mmc2
HMI Advanced (IM4)
Commissioning Manual, 03/2009, 6FC5397-0DP10-3BA0
Diagnostics and service
5.6 Action log
159