Siemens SINUMERIK 840D Function Manual

Also see for SINUMERIK 840D sl: Manual Function manual Function manual Function manual Function manual

17.12.10 Supplementary conditionsIncremental measuring systemsThe user must ensure that machine axes with incremental measuring systems are clampedwith sufficient speed in the event of a power failure to prevent a change to the last position,known and saved by the control. Otherwise the assumed position when the control is restarteddiffers greatly to the actual position of the machine axis. Drive-autonomous retraction must alsonot be activated for these axes.A detailed description of the automatic restoration of actual positions after the next start of thecontrol (Power On) can be found in:References:Basic Functions Function Manual, Section "R1 Referencing" > "Automatic restoration of themachine reference"Drive-autonomous retractionThe "Drive-autonomous retraction" function must not be activated for machine axes involved inthe retraction movement.Axis couplingsAxis couplings are not restored with the selection of JOG retract.Tapping using G63JOG retract is not possible for tapping with compensating chuck and speed-controlled spindlewithout encoder (G63).TransformationsIf a transformation is selected through JOG retract, the active measuring systems of allmachine axes involved in the transformation must be in the "referenced" or "restored" state.OEM transformations such as parallel kinematics for hexapods, can only be traversed withreferenced measuring systems. Traversing with restored axis positions is not possible.Tool orientation via directly programmed orientation axesJOG retract cannot generate a retraction movement in the tool direction if the tool orientationis not performed via NC functions, but through direct programming of the orientation axes.H1: Manual traversing17.12 Retraction in the tool direction (JOG retract)Axes and spindles702 Function Manual, 06/2019, A5E47437747B AA