Siemens Sinumerik 840D sl Function Manual page 628

Diagnostics
10.1 Troubleshooting procedure
The variables that you wish to trace can also be assigned a particular color.
Figure 10-40 Selecting the colors for recording in trace
Example of a trace when SBH is exceeded
With softkey "New trace (Drive/NC) initially, the session type is called, in this case
NC and PLC variables.
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SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
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