Siemens SINUMERIK 840D Function Manual page 863

The size of the tolerance windows is set with machine data of the FS. Reaching of the
synchronism is influenced by the following factors:
● AV, DV: Position variance between FS and LS
● VV: Difference in speed between FS and LS
Figure 19-3
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
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Synchronism monitoring with COUPON and synchronism test mark WAITC with
synchronization on a turning leading spindle
S3: Synchronous spindle
19.1 Brief description
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