Siemens SINUMERIK 840D sl Function Manual page 426

T3: Tangential control
8.3 Using tangential follow-up control
Geometry axis switchover with TANGDEL
The following example shows how TANGDEL is used correctly in association with an axis
switchover.
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)
N70 GEOAX(2, Y2)
N80 TANG(A, X, Y)
N90 TANGON(A, 90)
...
426
; Geo axis group is determined
; Channel axis Y1 is being assigned
; Follow-up group with Y1 is being activated
; Movement block for the leading axes
; Activation of follow-up control
; Canceling the definition of a follow-up axis
assignment
; Geometry axis switchover permitted
; Redef. Follow-up axis group
; Follow-up group with Y2 is being activated
Function Manual, 09/2011, 6FC5397-2BP40-2BA0
Special Functions