HEIDENHAIN TNC 620 Programming Station, User Manual

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Tables and Overviews
18.5 Functions of the TNC 620 and the iTNC 530 compared
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HEIDENHAIN | TNC 620 | ISO Programming User's Manual | 9/2016
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!
See below for a list of known differences. The list does not claim to be complete!
Function TNC 620 iTNC 530
Handwheel-superimposed
traversing with
M118
Effective in the active coordinate
system (which may also be
rotated or tilted), or in the machine
coordinate system, depending on
the setting in the 3-D ROT menu
for manual operation Effective in the machine
coordinate system
Deleting basic rotation with
M143 M143
deletes the entries in
columns
SPA
,
SPB
and
SPC
in
the preset table, reactivating the
corresponding preset table row
does
not activate the deleted
basic rotation
M143
does not delete the
entry in the
ROT
column in the
preset table, reactivating the
corresponding preset table row
activates the deleted basic rotation
Scaling approach/departure
movements (
APPRDEP
/
RND
)
Axis-specific scaling factor is
allowed, radius is not scaled Error message
Approach/departure with
APPRDEP
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 and 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 iTNC
does not issue an error message,
but uses the last valid contour
element to calculate the departure
movement