Traversing Direction For Fast Retraction From The Contour - Siemens SINUMERIK 840D sl Programming Manual

Subprogram:
Subprogram
PROC W_CHANGE SAVE
N10 G0 Z100 M5
N20 T11 M6 D1 G41
N30 REPOSL RMBBL M3
1.14.7

Traversing direction for fast retraction from the contour

Retraction movement
The following G code defines the retraction movement plane:
●
●
●
Programmable traversing direction (ALF=...)
The direction is programmed in discrete steps of 45 degrees with
retraction movement.
The possible traversing directions are stored in special code numbers on the control and can
be called up using these numbers.
Example:
Program code
N10 SETINT(2) PRIO=1 ABHEB_Z LIFTFAST
ALF=7
Job Planning
Programming Manual, 03/2013, 6FC5398-2BP40-3BA1
LFTXT
The retraction movement plane is defined by the path tangent and the tool direction
(default setting).
LFWP
The plane of the retraction movement is the active working plane selected with G codes
, or . The direction of the retraction movement is not dependent on the path
G17 G18 G19
tangent. This allows a fast retraction to be programmed parallel to the axis.
LFPOS
Retraction of the axis declared using
programmed with
POLF
has no influence on the retraction direction for several axes and for several axes in a
ALF
linear system.
References:
Programming Manual, Fundamentals, Section: "Rapid retraction during thread cutting"
POLFMASK
.
Flexible NC programming
1.14 Interrupt routine (ASUB)
Comment
; Subprogram where the actual operating
state is saved
; Tool changing position, spindle stop
; Change tool
; Reposition at the contour and return
jump into the main program (this is
programmed in a block)
/ to the absolute axis position
POLFMLIN
in the plane of the
ALF
129