programming modes
Soft keys for selecting functions in screen
Switching the soft-key rows
Changing the screen settings
(only BC 120)
Typewriter keyboard for entering letters and symbols
File names
Comments
ISO
programs
Machine operating modes
MANUAL OPERATION
ELECTRONIC HANDWHEEL
POSITIONING WITH MDI
PROGRAM RUN, SINGLE BLOCK
PROGRAM RUN, FULL SEQUENCE
Programming modes
PROGRAMMING AND EDITING
TEST RUN
Program/file management, TNC functions
Select or delete programs and files
External data transfer
Enter program call in a program
MOD functions
Display help texts for NC error messages
Pocket calculator
Moving the highlight, going directly to blocks, cycles
and parameter functions
Go directly to blocks, cycles and parameter
Move highlight
functions
Override control knobs for feed rate/spindle speed
50
100
0
1
F %
50
50
100
0
1
S %
50
Programming path movements
Approach/depart contour
FK free contour programming
Straight line
Circle center/pole for polar coordinates
Circular arc with center
Circular arc with radius
Circular arc with tangential connection
Chamfer
Corner rounding
Tool functions
Enter and call tool length and radius
Cycles, subprograms and program section
repeats
Program stop in a program
Enter touch probe functions in a program
Define and call cycles
Enter and call labels for subprogramming and
program section repeats
Coordinate axes and numbers: Entering and editing
. . .
. . .
Decimal point
Change arithmetic sign
Polar coordinates
Incremental dimensions
Q parameters
Capture actual position
Skip dialog questions, delete words
Confirm entry and resume dialog
End block
Clear numerical entry or TNC error
or delete error message
Abort dialog, delete program section
Select coordinate axes or
enter them into the program
Numbers
TNC models, software and features
This manual describes functions and features provided by the TNCs as
of the following NC software numbers.
TNC modelNC software no.
TNC 426 CB, TNC 426 PB280 476-xx
TNC 426 CF, TNC 426 PF280 477-xx
TNC 426 M280 476-xx
TNC 426 ME280 477-xx
TNC 430 CA, TNC 430 PA280 476-xx
TNC 430 CE, TNC 430 PE280 477-xx
TNC 430 M280 476-xx
TNC 430 ME280 477-xx
TNC 410286 060-xx
TNC 410286 080-xx
The suffixes E and F indicate the export versions of the TNC The
export versions of the TNC have the following limitations:
n Linear movement is possible in no more than 4 axes simultaneously.
The machine tool builder adapts the useable features of the TNC to his
machine by setting machine parameters. Some of the functions
described in this manual may not be among the features provided by
your machine tool.
TNC functions that may not be available on your machine include:
n Probing function for the 3-D touch probe
n Digitizing option
n Tool measurement with the TT 130
n Rigid tapping
n Returning to the contour after an interruption
Please contact your machine tool builder to become familiar with the
features of your machine.
Many machine manufacturers, as well as HEIDENHAIN, offer
programming courses for the TNCs. We recommend these courses as
an effective way of improving your programming skill and sharing
information and ideas with other TNC users.
Touch Probe Cycles User's Manual:
All of the touch probe functions are described in a separate
manual. Please contact HEIDENHAIN if you require a copy
of this User's Manual. ID number: 329 203-xx.
HEIDENHAIN TNC 410, TNC 426, TNC 430I
Location of use
The TNC complies with the limits for a Class A device in accordance
with the specifications in EN 55022, and is intended for use primarily
in industrially-zoned areas.
New features of the NC software 280 476-xx
n Thread milling cycles 262 to 267 (see “Fundamentals of thread
milling” on page 208)
n Tapping Cycle 209 with chip breaking (see “TAPPING WITH CHIP
BREAKING (Cycle G209, not TNC 410)” on page 206)
n Cycle 247(see “DATUM SETTING (Cycle G247, not TNC 410)” on
page 299)
n Entering two miscellaneous functions M (see “Entering
Miscellaneous Functions M” on page 148)
n Program stop with M01 (see “Optional Program Run Interruption”
on page 386)
n Starting NC programs automatically (see “Automatic Program Start
(not TNC 410)” on page 383)
n Selecting the screen layout for pallet tables (see “Screen layout for
executing pallet tables” on page 95)
n New columns in the tool table for managing TS calibration data (see
“Entering tool data in tables” on page 101)
n Management of unlimited calibration data with the TS triggering
touch probes (see User’s Manual for Touch Probe Cycles)
n Cycles for automatic tool measurement with the TT tool touch probe
in ISO (see User's Manual for Touch Probe Cycles)
n New Cycle 440 for measuring the axial displacement of a machine
with the TT tool touch probe (see User's Manual for Touch Probe
Cycles)
n Support of Teleservice functions (see “Teleservice (not TNC 410)”
on page 418)
n Setting the display mode for blocks with more than one line, e.g. for
cycle definitions (see “General User Parameters” on page 422)
n M142 (see “Erasing modal program information: M142 (not TNC
410)” on page 163)
n M143 (see “Erasing the basic rotation: M143 (not TNC 410)” on
page 163)
n M144 (see “Compensating the machine's kinematic configuration
for ACTUAL/NOMINAL positions at end of block: M144 (not TNC
410)” on page 171)
n External access with the LSV-2 interface (see “Permitting/
Restricting external access” on page 419)
II
Changed features of the NC software 280 476-xx
n The feed-rate unit for M136 was changed from µm/rev to mm/rev.
(see “Feed rate in millimeters per spindle revolution: M136 (not TNC
410)” on page 159)
n The size of the contour memory for SL cycles was doubled. (see “SL
Cycles Group II (not TNC 410)” on page 265)
n M91 and M92 are now also possible with tilted working plane. (see
“Positioning in a tilted coordinate system” on page 306)
n Display of the NC program during the execution of pallet tables (see
“Program Run, Full Sequence and Program Run, Single Block” on
page 8) and (see “Screen layout for executing pallet tables” on page
95)
New/Changed Descriptions in this Manual
n TNCremoNT (see “Data transfer between the TNC and
TNCremoNT” on page 398)
n Summary of input formats (see “Input format and unit of TNC
functions” on page 443)
n Mid-program startup of pallet tables (see “Mid-program startup
(block scan)” on page 380)
n Exchanging the buffer battery (see “Exchanging the Buffer Battery”
on page 445)
HEIDENHAIN TNC 410, TNC 426, TNC 430III
Contents
Introduction
1
Manual Operation and Setup
Positioning with Manual Data Input
(MDI)
Programming: Fundamentals of File
Management, Programming Aids
Programming: Tools
Programming: Programming Contours
Programming: Miscellaneous Functions
Programming: Cycles
Programming: Subprograms and
Program Section Repeats
Programming: Q Parameters
Test Run and Program Run
MOD Functions
2
3
4
5
6
7
8
9
10
11
12
Tables and Overviews
13
1 Introduction ..... 1
1.1 The TNC 410, the TNC 426 and the TNC 430 ..... 2
Programming: HEIDENHAIN conversational and ISO formats ..... 2
Compatibility ..... 2
1.2 Visual Display Unit and Keyboard ..... 3
Visual display unit ..... 3
Screen layout ..... 4
Keyboard ..... 5
1.3 Modes of Operation ..... 6
Manual Operation and Electronic Handwheel ..... 6
Positioning with Manual Data Input (MDI) ..... 6
Programming and editing ..... 7
Test Run ..... 7
Program Run, Full Sequence and Program Run, Single Block ..... 8
HEIDENHAIN TNC controls are workshop-oriented contouring
controls that enable you to program conventional machining
operations right at the machine in an easy-to-use conversational
programming language. They are designed for milling, drilling and
boring machines, as well as for machining centers. The TNC 410 can
control up to 4 axes, the TNC 426 up to 5 axes, and the TNC 430 up to
9 axes. You can also change the angular position of the spindle under
program control.
An integrated hard disk provides storage for as many programs as you
like, even if they were created off-line or by digitizing. For quick
calculations you can call up the on-screen pocket calculator at any
time.
Keyboard and screen layout are clearly arranged in such a way that the
functions are fast and easy to use.
Programming: HEIDENHAIN conversational and
ISO formats
HEIDENHAIN conversational programming is an especially easy
method of writing programs. Interactive graphics illustrate the
individual machining steps for programming the contour. If a
production drawing is not dimensioned for NC, the HEIDENHAIN FK
free contour programming does the necessary calculations
automatically. Workpiece machining can be graphically simulated
either during or before actual machining. It is also possible to program
in ISO format or DNC mode.
You can also enter and test one program while the control is running
1.1 The TNC 410, the TNC 426 and the TNC 430
another. With the TNC 426, TNC 430 it is also possible to test one
program while another is being run.
Compatibility
The TNC can execute all part programs that were written on
HEIDENHAIN controls TNC 150 B and later.
21 Introduction
1.2Visual Display Unit and
Keyboard
Visual display unit
The TNC is available with either a color CRT screen (BC 120) or a TFT
flat panel display (BF 120). The figure at top right shows the keys and
controls on the BC 120, and the figure at center right shows those of
the BF 120.
1 Header
When the TNC is on, the selected operating modes are shown in
the screen header: the machining mode at the left and the
programming mode at right. The currently active mode is
displayed in the larger box, where the dialog prompts and TNC
messages also appear (unless the TNC is showing only graphics).
2 Soft keys
In the footer the TNC indicates additional functions in a soft-key
row. You can select these functions by pressing the keys
immediately below them. The lines immediately above the softkey row indicate the number of soft-key rows that can be called
with the black arrow keys to the right and left. The line
representing the active soft-key row is highlighted.
3 Soft key selector keys
4 Switching the soft-key rows
5 Setting the screen layout
6 Shift key for switchover between machining and programming
modes
1
1
2
4
3
1
5
7
9
8
10
4
6
1
1.2 Visual Display Unit and Keyboard
Keys on BC 120 only
7 Screen demagnetization; Exit main menu for screen settings
8 Select main menu for screen settings:
n In the main menu: Move highlight downward
n In the submenu: Reduce value or move picture to the left or
downward
9 n In the main menu: Move highlight upward
n In the submenu: Increase value or move picture to the right or
upward
10 n In the main menu: Select submenu
n In the submenu: Exit submenu
Main menu dialogFunction
BRIGHTNESSAdjust brightness
CONTRASTAdjust contrast
H-POSITIONAdjust horizontal position
HEIDENHAIN TNC 410, TNC 426, TNC 4303
5
1
1
2
4
6
4
11
3
1
Main menu dialogFunction
V-POSITIONAdjust vertical position
V-SIZEAdjust picture height
SIDE-PINCorrect barrel-shaped distortion
TRAPEZOIDCorrect trapezoidal distortion
ROTATIONCorrect tilting
COLOR TEMPAdjust color temperature
R-GAINAdjust strength of red color
B-GAINAdjust strength of blue color
RECALLNo function
The BC 120 is sensitive to magnetic and electromagnetic noise, which
can distort the position and geometry of the picture. Alternating fields
can cause the picture to shift periodically or to become distorted.
Screen layout
You select the screen layout yourself: In the Programming and Editing
1.2 Visual Display Unit and Keyboard
mode of operation, for example, you can have the TNC show program
blocks in the left window while the right window displays
programming graphics (only TNC 410). The available screen windows
depend on the selected operating mode.
To change the screen layout:
Press the SPLIT SCREEN key: The soft-key row
shows the available layout options (see “Modes of
Operation,” page 6).
Select the desired screen layout.
41 Introduction
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