HEIDENHAIN TNC 620 (81760x-02) ISO programming - Manual (Page 612)

Tables and overviews
18.5 Functions of the TNC 620 and the iTNC 530 compared
18
612
TNC 620 | User's ManualDIN/ISO Programming | 2/2015
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 620!
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 620 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