| TNC 320 | TNC 620 |
| Axes | 3 axes + spindle Optional 4th and 5th axis (with
noncontrolled spindle) | 3 axes + spindle Optional 4th and 5th axes |
| Interpolation | s Linear in 4 axes s Circular in 2 axes sHelical, superimposition of circular and straight paths s Cylinder surface (option) | s Linear: in 4 axes (optionally 5) s Circular: in 2 (optionally 3) axes s Helical,
superimposition of circular and straight paths s Cylinder surface (option) |
| Program entry | s HEIDENHAIN conversational s DIN/ISO (program input via soft keys or via external USB keyboard) s FK free contour programming (option on the TNC 620) | s HEIDENHAIN conversational s DIN/ISO (program input via soft keys or via external USB keyboard) s FK free contour programming (option on the TNC 620) |
| Programming support | TNCguide presents user information directly on
the TNC | TNCguide presents user information directly on
the TNC |
| DXF converter option | - | Download contours and machining positions from
DXF files |
| Program memory | 300 MB | 300 MB |
| Position entry | s Positions in Cartesian or polar coordinates s Incremental or absolute dimensions s Display and entry in
mm or inches s Actual position capture | s Positions in Cartesian or polar coordinates s Incremental or absolute dimensions s Display and entry in
mm or inches s Actual position capture |