HEIDENHAIN TNC 640 (34059x-05) - Manual (Page 697)

Functions of the TNC 640 and the iTNC 530 compared 19.5
19
TNC 640 | User's Manual
HEIDENHAIN Conversational Programming | 1/2015
697
Comparison: Differences in Program Run, traverse
movements
Caution: Check the traverse movements!
NC programs that were created on earlier TNC controls may lead to different traverse movements or
error messages on a TNC 640!
Be sure to take the necessary care and caution when running-in programs!
Please find a list of known differences below. The list does not pretend to be complete!
Function TNC 640 iTNC 530
Handwheel-superimposed
traverse with M118 Effective in the active coordinate
system (which may also be rotated
or tilted), or in the machine-based
coordinate system, depending on
the setting in the 3-D ROT menu
for manual operation Effective in the machine-based
coordinate system
Approach/Departure with
APPR/DEP, R0 is active, contour
element plane is not equal to
working plane If possible, the blocks are
executed in the defined
contour
element plane , error message for
APPRLN, DEPLN, APPRCT, DEPCT
If possible, the blocks are
executed in the defined
working
plane ; error message for
APPRLN,
APPRLT, APPRCT, APPRLCT
Scaling approach/departure
movements (
APPR/DEP/RND)
Axis-specific scaling factor is
allowed, radius is not scaled Error message
Approach/departure with
APPR/DEP Error message if
R0 is
programmed for
APPR/DEP LN or
APPR/DEP CT
Tool radius 0 and compensation
direction
RR are assumed
Approach/departure with
APPR/DEP if contour elements
with length 0 are defined Contour elements with length
0 are ignored. The approach/
departure movements are
calculated for the first or last valid
contour element An error message is issued if a
contour element with length 0 is
programmed after the
APPR block
(relative to the first contour point
programmed in the APPR block)
For a contour element with length
0 before a
DEP block, the TNC
does not issue an error message,
but uses the last valid contour
element to calculate the departure
movement