Rounding Corners: M197 - HEIDENHAIN TNC 620 User Manual

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Miscellaneous Functions | Miscellaneous functions for path behavior

Rounding corners: M197

Standard behavior
With active radius compensation, the control inserts a transition arc
at outside corners. This may lead to rounding of that edge.
Behavior with M197
With the M197 function, the contour at the corner is tangentially
extended and a smaller transition arc is then inserted. When you
program the M197 function and then press the ENT key, the control
opens the DL input field. In DL, you define the length the control
by which the control extends the contour elements. With M197,
the corner radius is reduced, the corner is rounded less and the
traverse movement is still smooth.
Effect
The M197 function acts blockwise and is only effective on outside
corners.
Example
L X... Y... RL M197 DL0.876
488
HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2017