HEIDENHAIN TNC 620 User Manual page 21

3 Programming: Fundamentals, file management.........................................................................85
3.1 Fundamentals........................................................................................................................................ 86
Position encoders and reference marks................................................................................................. 86
Reference system................................................................................................................................... 86
Reference system on milling machines..................................................................................................87
Designation of the axes on milling machines.........................................................................................87
Polar coordinates.....................................................................................................................................88
Absolute and incremental workpiece positions......................................................................................89
Selecting the datum................................................................................................................................90
3.2 Opening programs and entering......................................................................................................... 91
Organization of an NC program in HEIDENHAIN Conversational format................................................91
Define the blank: BLK FORM................................................................................................................. 92
Opening a new part program................................................................................................................. 94
Programming tool movements in conversational................................................................................... 95
Actual position capture............................................................................................................................97
Editing a program....................................................................................................................................98
The TNC search function...................................................................................................................... 101
3.3 File manager: Fundamentals..............................................................................................................103
Files....................................................................................................................................................... 103
Displaying externally generated files on the TNC.................................................................................105
Data Backup.......................................................................................................................................... 105
TNC 620 | User's Manual
HEIDENHAIN Conversational Programming | 3/2014
21