Siemens SINUMERIK 840D sl Function Manual page 446
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Compensations (K3)
Neural quadrant error compensation
● Copy the Toolbox programs to the NC (with archive!)
● Adapt the following programs:
Executing "Learning" process
Start the following programs
● Select and start QECDAT. System variables are assigned.
● Select QECSTART and override 100% and start. The learn program takes about 15
446
QECDAT.MPF
QECSTART.MPF
QECLRNP.SPF (learn program "Polynomial") or QECLRNC.SPF (learn program "Circle")
is stored as QECLRN.SPF on the NC!
The learn program "Circle" should be used where possible for GEO axes, but only the
learn program "Polynomial" is recommended for axes of any other type.
– In part program QECDAT
adjust the friction compensation time constant if necessary (see point 1)
N1340 $AA_QEC_TIME_1[outNr,axNr] = 0.0xx
N1040 def int numAxes = ..... enter the number of axes to be learned
N1150 axisName[0] = ...... enter the axis name of the 1st axis.
N1160 axisName[1] = ...... enter the axis name of the 2nd axis.
N1170 axisName[2] = ...... enter the axis name of the 3rd axis.
N1180 axisName[3] = ...... enter the axis name of the 4th axis.
(For the "Circle" learn program, AX1 .. AX8 or the machine or channel axis name can
be entered as the axis name. In contrast, only the channel axis name may be used for
the "Polynomial" learn program)
– In part program QECSTART
(For the "Circle" learn program, AX1 .. AX8 or the machine or channel axis name can
be entered as the axis name. In contrast, only the channel axis name may be used for
the "Polynomial" learn program)
N1080 def int numAxes = ..... enter the number of axes to be learned.
N1310 axisName[0] = ...... enter the axis name of the 1st axis.
N1320 axisName[1] = ...... enter the axis name of the 2nd axis.
N1330 axisName[2] = ...... enter the axis name of the 3rd axis.
N1340 axisName[3] = ...... enter the axis name of the 4th axis.
minutes to execute with a traversing motion of about 30 cm. If the message "REORG not
possible" is displayed, it can be ignored. The message is displayed for about 10 seconds.
It then disappears and the learning process continues with traversing motions.
Function Manual, 03/2009, 6FC5397-1BP10-4BA0
Extended Functions
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