Siemens SINUMERIK 840D sl Commissioning Manual page 252

NC commissioning
8.5 Nodding compensation
3. Create a part program which comprises the following components:
– Trigger tag $AN_CUTRACE
– Dwell time of at least 200 ms in order that the offset of the probe can be taken into
– Traversing with constant velocity.
– The accelerating axis is accelerated to at least 1 m/s
Example:
4. Initiate the trace recording with the "Start trace" softkey. Then initiate the part program with
<NC-Start>.
Note
Starting the trace
Once trace recording has been initiated by the trigger in the part program, it is no longer
possible to cancel the recording process.
5. As soon as recording is complete, the following data is displayed in a graphic representation:
– Encoder position actual value (p0479) of the probe
– Acceleration of the accelerating axis
6. Enter the compliance factor (positional deviation/acceleration) and repeat the
measurement. To clarify the effect of the compliance factor against the first measurement,
scaling of the graphic following the first measurement is retained.
7. Once you have determined the optimum compliance factor for the axis, rescaling of the
graphic can be performed with the "Rescale" softkey.
8. As soon as the compliance factor is changed, the measurement must be repeated for
verification. Only then will the "Accept" softkey become active.
⇒ additional actions:
● "Start trace" softkey to initiate recording of the trace.
● "Rescale" softkey to automatically scale the graphic.
● "Cancel" softkey to return to the overview display without any modifications.
● "Accept" softkey to adopt the new compliance values.
252
consideration in the graphic representation.
SOFT
DYNNORM
$AN_CUTRACE=1
G4 F0.2
G91 G01 F20000 Y-50
G4 F0.5
Y50
G4 F0.5
M30
; acceleration with active jerk limitation
; G command for activating the normal dynamic
response
; trigger tag
; Dwell time
; relative traversing motion with programmed
feed
; Dwell time
; traversing motion
; Dwell time
; End of program
Commissioning Manual, 12/2019, A5E48312804B AA
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CNC Commissioning: NC, PLC, Drive