Siemens SINUMERIK 840D Function Manual

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together and do not reach their end point simultaneously (no direct time relationship, see alsoSection "Motion behavior and interpolation functions (Page 192)").Positioning axis types and block changeThe block change time depends on the programmed positioning axis type (refer also to Section"Block change (Page 204)"):Type Description1 The block change occurs when all path and positioning axes have reached their programmedend point.2 The block change occurs when all path axes have reached their programmed end point.With positioning axis type 2, it is possible to approach the programmed end point across sev‐eral block limits.3 It is possible to set the block change within the braking ramp of the single axis interpolation ifthe criteria for the motion end and the block change are fulfilled for the path interpolation.Motion synchronizationPositioning axes permit movements to be activated from the same machining program andsuch movements to be synchronized at block limits (type 1) or at explicit points by means ofa WAITP command (type 2).Motion end criterion for block change in the brake rampFor single-axis interpolation, it is also possible to set another end-of-motion criterion for theblock change in the braking ramp.Traverse path axes in G0 as positioning axisEach path axis can be traversed as positioning axis in rapid traverse movement (G0). Thus allaxes travel to their end point independently.In this way, two sequentially programmed X and Z axes are treated like positioning axes inconjunction with G0. The block change to axis Z can be initiated by axis X as a function of thebraking ramp time setting (100-0%). Axis Z starts to move while axis X is still in motion. Bothaxes approach their end point independently of one another.Axis typesPositioning axes can be linear axes and rotary axes.Positioning axes can also be configured as indexing axes.Independence of positioning axes and path axesThe mutual independence of positioning and path axes is ensured by the following measures:● No shared interpolation● Each positioning axis has a dedicated axis interpolatorP2: Positioning axes6.2 Own channel, positioning axis or concurrent positioning axisAxes and spindlesFunction Manual, 06/2019, A5E47437747B AA 189