HEIDENHAIN SW 68894x-02 - Manual (Page 123)

HEIDENHAIN CNC PILOT 640 123
4.1
W
o
rk
ing
with
cy
cles
Help graphics
The functions and parameters of the Teach-in cycles are illustrated in
the graphic support window. These graphics usually show an external
machining operation.
 The Circle key allows you to switch between the
help graphics for internal and external machining.
Elements used in the graphic support window:
 Broken line: Rapid traverse path
 Continuous line: Feed path
 Dimension line with arrow head on one side: "Directional
dimension"—the algebraic sign defines the direction
 Dimension line with arrow head on both sides: "Absolute
dimension"—the algebraic sign has no effect.
DIN macros
DIN macros (DIN cycles) are DIN subprograms (see "DIN cycle" on
page 356). You can integrate DIN macros in Teach-in programs. Make
sure that the DIN macros do not contain any zero point shifts.
Graphical test run (simulation)
Before executing a cycle, you can graphically test the contour details
and the machining sequence (see "Simulation mode of operation" on
page 468).
Danger of collision!
Teach-in programming: With DIN macros, the zero point
shift is reset at the end of the cycle. Therefore, do not use
any DIN macros with zero point shifts in Teach-in
programming.