Programming: Deselecting Overlays Axis-Specifically (Corrof) - Siemens SINUMERIK 840D sl Programming Manual

Fundamentals
2.12 Coordinate transformations (frames)
MIRROR
Meaning
G53:
G153:
SUPA:
G500:
TRANS ROT SCALE MIRROR:
2.12.11

Programming: Deselecting overlays axis-specifically (CORROF)

The following axis-specific overlays (overrides) are deleted with the CORROF procedure:
● Additive work offsets (DRF offsets) set via handwheel traversal
● Position offsets programmed via the $AA_OFF system variable
A preprocessing stop is initiated through the deletion of an overlay (override) value and the
position component of the deselected overlaid movement is transferred to the position in the
basic coordinate system. Whereby, no axis is traversed.
The position value that can be read via the $AA_IM system variable (current MCS setpoint of
the axis) does not change in the machine coordinate system.
The position value that can be read via the $AA_IW system variable (current WCS setpoint of
the axis) changes in the workpiece coordinate system because it now contains the deselected
component of the overlaid movement.
Note
CORROF can be programmed in an NC program.
CORROF must not be programmed in a synchronized action.
Syntax
CORROF(<Axis>,"<String>"[,<Axis>,"<String>"])
336
Non-modal suppression of all programmable and settable
frames
G153 has the same effect as G53 and also suppresses the
entire basic frame ($P_ACTBFRAME).
SUPA has the same effect as G153 and also suppresses:
● Handwheel offsets (DRF)
● Overlaid movements
● External zero offset
● PRESET offset
Modal deactivation of all settable frames (G54 to G57,
G505 to G599) if G500 does not contain a value.
Without axis details, a deletion of the programmable frames
acts.
Programming Manual, 12/2019, 6FC5398-2EP40-0BA0
NC programming