Siemens SINUMERIK 840D sl Programming Manual page 448

Path traversing behavior
10.1 Tangential control (TANG, TANGON, TANGOF, TLIFT, TANGDEL)
Examples
Example 1: Defining and activating tangential tracking
Program code
N10 TANG(C,X,Y,1,"B","P")
N20 TANGON(C,90)
...
Note
Simplified programming
TANG(C,X,Y,1,"B","P")
Example 2: Plane change
Program code
N10 TANG(A,X,Y,1)
N20 TANGON(A)
N30 X10 Y20
...
N80 TANGOF(A)
N90 TANGDEL(A)
...
TANG(A,X,Z)
TANGON(A)
...
N200 M30
Example 3: Geometry axis changeover and TANGDEL
No alarm is produced.
Program code
N10 GEOAX(2,Y1)
N20 TANG(A,X,Y)
N30 TANGON(A,90)
N40 G2 F8000 X0 Y0 I0 J50
N50 TANGOF(A)
N60 TANGDEL(A)
448
Comment
; Definition of a tangential tracking: Rotary
axis C should follow geometry axes X and Y.
; The C axis is a following axis. On every
movement of the path axes, it is rotated into a
position at 90° to the path tangent.
can be more simply programmed as
Comment
; 1st definition of tangential tracking.
; Activating the coupling.
; Radius
; Deactivate the 1st coupling.
; Delete the 1st definition.
; 2nd definition of tangential tracking.
; Activate the new coupling.
Comment
; Y1 is geometry axis 2.
; 1st definition of tangential tracking.
; Activate tracking with Y1.
; Deactivate tracking with Y1.
; Delete the 1st definition.
TANG(C,X,Y,,,"P")
Programming Manual, 03/2013, 6FC5398-2BP40-3BA1
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