Curve Tables; Product Brief; Function - Siemens SINUMERIK 840D Function Manual

Program code
G0 Z10
G0 Y20
G1 Y22 V25
TRAILOF(V,Y)
TRAILOF(W,Z)
Example 2
The dependent and independent movement components of a coupled motion axis are added
together for the coupled motion. The dependent component can be regarded as a co-ordinate
offset with reference to the coupled motion axis.
Program code
N01 G90 G0 X100 U100
N02 TRAILON(U,X,1)
N03 G1 F2000 X200
N04 U201
N05 X250
N06 G91 U100
N07 G90 X0
N10 TRAILOF(U,X)
14.2

Curve tables

14.2.1

Product brief

14.2.1.1

Function

The "curve tables" function can be used to define the complex sequence of motions of an axis
in a curve table.
Any axis can be defined as a leading axis and a following axis can be traversed by taking a
curve table into account.
The command variable in these motion sequences is an abstract master value, which is
generated by the control or derived from an external variable (e.g. simulated position of an axis).
Creating curve tables is performed via part program sequences.
The curve tables in the static NC memory remain valid after the part program has been been
closed or after POWER DOWN.
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
Comment
; Infeed Z and W axes in opposite axial directions
; Infeed of Y and V axes in same axis
direction
; Superimpose dependent and independent movement of coupled
motion axis "V"
; Deactivate 1st coupled axis group
; Deactivate 2nd coupled axis group
Comment
;
; Activation of coupled axis group
; Dependent movement of U, Upos=200, UTrail=100
; Independent movement, Upos=U201+UTrail=301
; Dependent movement of U, UTrail=UTrail(100)+50=150,
Upos=351
; Independent movement of Upos(351)+U100=451
; Dependent movement of U, Upos=Upos(451)-UTrail(250)=201
M3: Coupled axes
14.2 Curve tables
429