Siemens SINUMERIK 840DE

Programming Motion Commands
4.11 Circular interpolation with tangential transition (CT)
Fundamentals
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
4-33
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Determining the direction of the tangent
The direction of tangent at the start point of a CT block is determined from the end tangent of
the programmed contour of the previous block with a traversing movement.
Any number of blocks without traversing information may lie between this block and the
current block.
Programming
CT X… Y… Z…
Parameters
CT Circle with tangential transition
X Y Z End point in Cartesian coordinates
Note
CT is modal.
As a rule, the circle is uniquely defined by the direction of the tangent, as well as the start
and end points.