February 2012 12 – 165
12.2.6 Log files
The PROFIBUS diagnosis described is mainly suitable for static failures.
Sporadic failures can hardly be analyzed this way.
Experience has shown, however, that sporadic failures account for the majority of PROFIBUS errors.
For the analysis of sporadic failures, special PROFIBUS log files are available in which all important
events during start-up and run time are recorded.
PBCONFIG_FAIL.LOG
Log recording the last start of the PROFIBUS system (if the start was aborted due to an error).
PBCONFIG_OK.LOG
Log recording the last successful start of the PROFIBUS system.
PBLOGBOOK.LOG
Log of the PROFIBUS system start indicating the software versions and possible errors. The log
is continuously added to.
As of 1 MB the data is copied toPBLOGBOOK.LOG.OLD.
REPORT.TXT
Log recording the last PROFIBUS start (will be overwritten during the next PROFIBUS start).
REPORT_EXT.TXT
Saves diagnostic messages of the slave. The log is continuously added to, but it is limited to approx.
1 MB. After the limit has been reached, the “old” diagnostic messages will be moved to
REPORT_EXT.TXT.OLD.
All these files are saved in the path PLC:\PROFIBUS.
For the analysis of a PROFIBUS error, read out this folder from the control using TNCremoNT
and send the data to your machine manufacturer or to a HEIDENHAIN service agency.