Siemens SINUMERIK 840Di Function Manual page 1552

Detailed Description
2.3 Configurable gear adaptation
Block change
If the spindle is switched to oscillation mode
with NC/PLC IS:
DB31, ... DBX82.3 (change gear),
the processing of the part program remains suspended.
A new block is not executed.
If oscillation mode is terminated with NC/PLC IS:
DB31, ... DBX16.3 (gear changed),
the processing of the part program is resumed.
A new block is executed.
Fig. 2-8
2-48
Block change following oscillation mode
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
Spindles (S1)