Siemens SINUMERIK 840Di Function Manual page 786

Detailed Description
2.4 Frames
2.4.5.4 Suppression of frames
Non-modal suppression of the following frames:
G53
System frame for cycles
Programmable frame
System frame for transformations, workpieces, TOROT and TOFRAME
Active settable frame
Non-modal suppression of the following frames:
G153
System frame for cycles
Programmable frame
System frame for TOROT and TOFRAME, workpieces
Active settable frame
All channel-specific and NCU global basic frames
System frames for PAROT, PRESET, scratching, ext. ZO
Implicit preprocessing stop and non-modal suppression of frames analog G153 and additional
SUPA
handwheel offsets (DRF), [ext. zero offset], superimposed motion
Modal activation of the G500 frame. The G500 frame should be a zero frame.
G500
Deactivate (clear) the handwheel offsets (DRF)
DRFOF
2-56
Axis Types, Coordinate Systems, Frames (K2)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0