143
HEIDENHAIN TNC 426 B, TNC 430
Input
If you enter M120 in a positioning block, the TNC continues the
dialog for this block by asking you the number of blocks LA that are
to be calculated in advance.
Effect
M120 must be located in an NC block that also contains radius
compensation RL or RR. M120 is then effective from this block until
■
radius compensation is canceled, or
■
M120 LA0 is programmed, or
■
M120 is programmed without LA.
■
another program is called with PGM CALL
M120 becomes effective at the start of block.
Limitations
■
After an external or internal stop, you can only re-enter the
contour with the function RESTORE POS. AT N.
■
If you are using the path functions RND and CHF, the blocks
before and after RND or CHF must contain only coordinates of
the working plane.
■
If you want to approach the contour on a tangential path, you
must use the function APPR LCT. The block with APPR LCT must
contain only coordinates of the working plane.
■
If you want to approach the contour on a tangential path, use the
function DEP LCT. The block with DEP LCT must contain only
coordinates of the working plane.
Superimposing handwheel positioning during
program run: M118
Standard behavior
In the program run modes, the TNC moves the tool as defined in
the part program.
Behavior with M118
M118 permits manual corrections by handwheel during program
run. You can use this miscellaneous function by entering axis-
specific values X, Y and Z (in mm) behind M118.
Programming M118
If you enter M118 in a positioning block, the TNC continues the
dialog for this block by asking you the axis-specific values. The
coordinates are entered with the orange axis direction buttons or
the ASCII keyboard.
Effect
Cancel handwheel positioning by programming M118 once again
without X, Y and Z.
M118 becomes effective at the start of block.
7.4 Miscellaneous F
unctions f
or Cont
our
ing Beha
vior
Example NC block
You wish to be able to use the handwheel during
program run to move the tool in the working plane
X/Y by ±1 mm of the programmed value:
L X+0 Y+38.5 RL F125 M118 X1 Y1
M118 is always effective in the original
coordinate system, even if the working
plane is tilted!
M118 also functions in the Positioning
with MDI mode of operation!
If M118 is active, the MANUAL OPERATI-
ON function is not available after a
program interruption
Hkap7.pm6
30.06.2006, 07:03
143
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Summary of Contents for TNC 426 B
Page 3: ...BAUSKLA PM6 30 06 2006 07 03 2 www EngineeringBooksPdf com ...
Page 4: ...BAUSKLA PM6 30 06 2006 07 03 3 www EngineeringBooksPdf com ...
Page 6: ...CINHALT PM6 30 06 2006 07 03 2 www EngineeringBooksPdf com ...
Page 16: ...CINHALT PM6 30 06 2006 07 03 12 www EngineeringBooksPdf com ...
Page 17: ...Introduction 1 Dkap1 pm6 30 06 2006 07 03 1 www EngineeringBooksPdf com ...
Page 29: ...Manual Operation and Setup 2 Dkap2_3 pm6 30 06 2006 07 03 13 www EngineeringBooksPdf com ...
Page 83: ...Programming Tools 5 Fkap5 pm6 30 06 2006 07 03 67 www EngineeringBooksPdf com ...
Page 106: ...Fkap5 pm6 30 06 2006 07 03 90 www EngineeringBooksPdf com ...
Page 107: ...Programming Programming Contours 6 Gkap6 pm6 30 06 2006 07 04 91 www EngineeringBooksPdf com ...
Page 165: ...Hkap7 pm6 30 06 2006 07 03 150 www EngineeringBooksPdf com ...
Page 166: ...Programming Cycles 8 kkap8 pm6 30 06 2006 07 03 151 www EngineeringBooksPdf com ...
Page 253: ...kkap8 pm6 30 06 2006 07 04 238 www EngineeringBooksPdf com ...
Page 265: ...LKAP9 PM6 30 06 2006 07 04 250 www EngineeringBooksPdf com ...
Page 266: ...Programming Q Parameters 10 MKAP10 PM6 30 06 2006 07 04 251 www EngineeringBooksPdf com ...
Page 297: ...MKAP10 PM6 30 06 2006 07 04 282 www EngineeringBooksPdf com ...
Page 298: ...Test Run and Program Run 11 NKAP11 PM6 30 06 2006 07 04 283 www EngineeringBooksPdf com ...
Page 312: ...MOD Functions 12 Okap12 pm6 30 06 2006 07 04 297 www EngineeringBooksPdf com ...
Page 332: ...Tables and Overviews 13 Pkap13 pm6 30 06 2006 07 04 317 www EngineeringBooksPdf com ...