Siemens Sinumerik 840D sl Programming Manual page 702

Additional functions
14.7 Learn compensation characteristics (QECLRNON, QECLRNOF)
Meaning
QECLRNON (axis 1,...4)
QECLRNO
QECLRN.SPF
QECDAT.MPF
QECTEST.MPF
Description
The traversing movements of the axes required for the learning process are generated with
the aid of an NC program. The learning movements are stored in the program in the form of a
learning cycle.
First teach-in
Sample NC programs contained on the disk of the standard PLC program are used to teach
the movements and assign the QEC system variables in the initial learning phase during
startup of the control:
Relearning
The learnt characteristics can be optimized with subsequent learning. The data stored in the
user memory are used as the basis for optimization. Optimization is performed by adapting
the sample NC programs to your needs.
The parameters for the learning cycle (e.g. QECLRN.SPF) might have to be changed for
"relearning".
• Set "Learn mode" = 1
• Reduce "Number of learn passes" if required
• Activate "Modular learning" if required and define area limits.
702
Activate "Learn quadrant error compensation" function
Deactivate "Learn quadrant error compensation" function
Learning cycle
Sample NC program for assigning system variables and for
parameterizing the learning cycle
Sample NC program for the circularity test
Programming Manual, 02/2011, 6FC5398-2BP40-1BA0
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