Circular Interpolation With Tangential Transition (Ct, X - Siemens SINUMERIK 840D sl Programming Manual

9.6.7 Circular interpolation with tangential transition (CT, X... Y... Z...)
Function
The Tangential transition function is an expansion of the circle programming.
The circle is defined by:
• The start and end point and
• The tangent direction at the start point.
The G code CT produces an arc that lies at a tangent to the contour element programmed
previously.
Determination of the tangent direction
The tangent direction in the starting point of a CT block is determined from the end tangent of
the programmed contour of the last block with a traversing motion.
There can be any number of blocks without traversing information between this block and the
current block.
Syntax
CT X... Y... Z...
Significance
CT:
X... Y... Z...:
Fundamentals
Programming Manual, 09/2011, 6FC5398-1BP40-2BA0
Circle with tangential transition
End point in Cartesian coordinates
Motion commands
9.6 Circular interpolation
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