Siemens SINUMERIK 840D sl Programming Manual page 375

Parameters
TRAILON
TRAILOF
Faxis
Laxis
Coupling
Note
Coupled axis motion is always executed in the base coordinate system (BCS).
The number of coupled axis groupings which may be simultaneously activated is limited only
by the maximum possible number of combinations of axes on the machine.
Job planning
Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0
Activating and defining a coupled-axis grouping
Example: V = trailing axis, Y = leading axis
TRAILON(V,Y)
Deactivate coupled axes
Example:V = trailing axis, Y = leading axis
TRAILOF(V,Y)
TRAILOF with 2 parameters deactivates the coupling to only 1
leading axis. If a trailing axis is assigned to 2 leading
axes, e.g. V=trailing axis and X,Y=leading axes, TRAILOF can
be called with 3 parameters to deactivate the coupling:
TRAILOF(V,X,Y)
TRAILOF(V)
Deactivate the coupling without details of leading axis. If
the trailing axis has 2 leading axes, both couplings are
deactivated.
Axis name of trailing axis
A coupled axis can also act as the leading axis for other
coupled axes. In this way, it is possible to create a range
of different coupled axis groupings.
Axis name of trailing axis
Coupling factor = Path of coupled-motion axis/path of
trailing axis
Default = 1
Path traversing behavior
9.2 Coupled motion (TRAILON, TRAILOF)
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