User`s manual for cycle programming

Cycles: Special Functions
11.7 COUPLING INTERPOLATION TURNING (cycle 291, DIN/ISO: G291,
software option 96)
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HEIDENHAIN | TNC 640 | User’s manual for cycle programming | 9/2015
You can use the following tool types for interpolation
turning:
TYPE: ROUGH, with the machining directions TO: 1, 7, 8
TYPE: FINISH, with the machining directions TO: 1, 7, 8
TYPE: BUTTON, with the machining directions TO: 1, 7, 8
The following tool types cannot be used for
interpolation turning: (error message "Function
not possible with this tool type" is displayed)
TYPE: ROUGH, with the machining directions
TO: 2 to 6
TYPE: FINISH, with the machining directions
TO: 2 to 6
TYPE: BUTTON, with the machining directions
TO: 2 to 6
TYPE: RECESS
TYPE: RECTURN
TYPE: THREAD