HEIDENHAIN TNC 620 (340 56x-03) ISO programming - Manual (Page 56)

56 Introduction
2.1 The TNC 620
2.1 The TNC 620
HEIDENHAIN TNC controls are workshop-oriented contouring
controls that enable you to program conventional machining
operations right at the machine in an easy-to-use conversational
programming language. They are designed for milling and drilling
machines, as well as machining centers, with up to five axes. You can
also change the angular position of the spindle under program control.
Keyboard and screen layout are clearly arranged in such a way that the
functions are fast and easy to use.
Programming: HEIDENHAIN conversational and
ISO formats
The HEIDENHAIN conversational programming format is an especially
easy method of writing programs. Interactive graphics illustrate the
individual machining steps for programming the contour. If a
production drawing is not dimensioned for NC, the HEIDENHAIN FK
free contour programming performs the necessary calculations
automatically. Workpiece machining can be graphically simulated
either during or before actual machining.
It is also possible to program the TNCs in ISO format or DNC mode.
You can also enter and test one program while the control is running
another.
Compatibility
The scope of functions of the TNC 620 does not correspond to that of
the TNC 4xx and iTNC 530 series of controls. Therefore, machining
programs created on HEIDENHAIN contouring controls (starting from
the TNC 150 B) may not always run on the TNC 620. If NC blocks
contain invalid elements, the TNC will mark them as ERROR blocks
when the file is opened.
Please also note the detailed description of the differences
between the iTNC 530 and the TNC 620 (see "Comparison:
Functions of the TNC 620 and the iTNC 530" on page 451).