HEIDENHAIN TNC 620 Programming Station User manual

TNC 620
Conversational Programming
User's Manual
NC Software
817600-03
817601-03
817605-03
English (en)
10/2015

Controls of the TNC
2HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015
Controls of the TNC
Keys on visual display unit
Key Function
Select split screen layout
Toggle the display between
machining and programming
modes
Soft keys for selecting functions on
screen
Shifting between soft-key rows
Machine operating modes
Key Function
Manual operation
Electronic handwheel
Positioning with manual data input
Program run, single block
Program run, full sequence
Programming modes
Key Function
Programming
Test run
Manage programs and files,
TNC functions
Key Function
Select or delete programs and files,
external data transfer
Define program call, select datum
and point tables
Select MOD functions
Display help text for NC error
messages, call TNCguide
Display all current error messages
Show calculator
Navigation keys
Key Function
Position the cursor
Go directly to blocks, cycles and
parameter functions
Potentiometer for feed rate
and spindle speed
Feed rate Spindle speed

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Cycles, subprograms and
program section repeats
Key Function
Define touch probe cycles
Define and call cycles
Enter and call labels for
subprogramming and program
section repeats
Enter program stop in a program
Tool functions
Key Function
Define tool data in the program
Call tool data
Programming path movements
Key Function
Approach/depart contour
FK free contour programming
Straight line
Circle center/pole for polar
coordinates
Circular arc with center
Circle with radius
Circular arc with tangential
connection
Chamfer/Corner rounding
Special functions
Key Function
Show special functions
Select the next tab in forms
Up/down one dialog box or button
Entering and editing coordinate
axes and numbers
Key Function
. . . Select coordinate axes or enter them in a program
. . . Numbers
Decimal point / Reverse algebraic
sign
Polar coordinate input /
Incremental values
Q-parameter programming/
Q-parameter status
Save actual position or values from
calculator
NO
ENT
Skip dialog questions, delete
words
Confirm entry and resume dialog
Conclude block and exit entry
Clear numerical entry or TNC error
message
Abort dialog, delete program
section

Controls of the TNC
4HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015

Fundamentals

Fundamentals
About this manual
6HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015
About this manual
The symbols used in this manual are described below.
This symbol indicates that important information
about the function described must be considered.
This symbol indicates that there is one or more
of the following risks when using the described
function:
Danger to workpiece
Danger to fixtures
Danger to tool
Danger to machine
Danger to operator
This symbol indicates a possibly dangerous situation
that may cause injuries if not avoided.
This symbol indicates that the described function
must be adapted by the machine tool builder. The
function described may therefore vary depending on
the machine.
This symbol indicates that you can find detailed
information about a function in another manual.
Would you like any changes, or have you found any
errors?
We are continuously striving to improve our documentation for you.
Please help us by sending your requests to the following e-mail
address:
[email protected]

TNC model, software and features
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TNC model, software and features
This manual describes functions and features provided by TNCs as
of the following NC software numbers.
TNC model NC software number
TNC 620 817600-03
TNC 620 E 817601-03
TNC 620 Programming Station 817605-03
The suffix E indicates the export version of the TNC. The export
version of the TNC has the following limitations:
Simultaneous linear movement in up to four axes
The machine manufacturer adapts the usable features of the TNC
to his machine by the setting machine parameters. Some of the
functions described in this manual may therefore not be among the
features provided by the TNC on your machine.
TNC functions that may not be available on your machine include:
Tool measurement with the TT
In order to find out about the actual features of your machine,
please contact the machine manufacturer.
Many machine manufacturers, including HEIDENHAIN, offer
programming courses for the TNCs. Participation in one of these
courses is recommended to familiarize yourself thoroughly with the
TNC functions.
Cycle Programming User's Manual:
All of the cycle functions (touch probe cycles
and machining cycles) are described in the Cycle
Programming User’s Manual. If you need this user's
manual, please contact HEIDENHAIN if required. ID:
1096886-xx

Fundamentals
TNC model, software and features
8HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015
Software options
The TNC 620 features various software options that can be enabled by your machine tool builder. Each option is to
be enabled separately and contains the following respective functions:
Additional Axis (option 0 and option 1)
Additional axis Additional control loops 1 and 2
Advanced Function Set 1 (option 8)
Expanded functions Group 1 Machining with rotary tables
Cylindrical contours as if in two axes
Feed rate in distance per minute
Coordinate transformations:
Tilting the working plane
Interpolation:
Circle in 3 axes with tilted working plane (spatial arc)
Advanced Function Set 2 (option 9)
Expanded functions Group 2 3-D machining:
Motion control with minimum jerk
3-D tool compensation through surface normal vectors
Using the electronic handwheel to change the angle of the swivel
head during program run without affecting the position of the tool
point. (TCPM = Tool Center Point Management)
Keeping the tool normal to the contour
Tool radius compensation perpendicular to traversing direction and
tool direction
Interpolation:
Linear in 5 axes (subject to export permit)
Touch Probe Functions (option 17)
Touch probe cycles:
Compensation of tool misalignment in automatic mode
Datum setting in the Manual Operation mode
Datum setting in automatic mode
Automatically measuring workpieces
Tools can be measured automatically
Touch probe functions
HEIDENHAIN DNC (option 18)
Communication with external PC applications over COM component

TNC model, software and features
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Advanced Programming Features (option 19)
Expanded programming functions FK free contour programming:
Programming in HEIDENHAIN conversational format with graphic
support for workpiece drawings not dimensioned for NC
Fixed cycles:
Peck drilling, reaming, boring, counterboring, centering (cycles 201
to 205, 208, 240, 241)
Milling of internal and external threads (cycles 262 to 265, 267)
Finishing of rectangular and circular pockets and studs (cycles 212 to
215, 251 to 257)
Clearing level and oblique surfaces (cycles 230 to 233)
Straight slots and circular slots (cycles 210, 211, 253, 254)
Linear and circular point patterns (cycles 220, 221)
Contour train, contour pocket—also with contour-parallel machining,
trochoidal slot (cycles 20 to 25, 275)
Engraving (cycle 225)
OEM cycles (special cycles developed by the machine tool builder)
can be integrated
Advanced Graphic Features (option 20)
Expanded graphic functions Program-verification graphics, program-run graphics
Plan view
Projection in three planes
3-D view
Advanced Function Set 3 (option 21)
Expanded functions Group 3 Tool compensation:
M120: Radius-compensated contour look-ahead for up to 99 blocks
3-D machining:
M118: Superimpose handwheel positioning during program run
Pallet Management (option number 22)
Pallet management Processing workpieces in any sequence
Display Step (option 23)
Display step Input resolution:
Linear axes down to 0.01 µm
Rotary axes to 0.00001°

Fundamentals
TNC model, software and features
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DXF Converter (option 42)
DXF converter Supported DXF format: AC1009 (AutoCAD R12)
Adoption of contours and point patterns
Simple and convenient specification of reference points
Select graphical features of contour sections from conversational
programs
KinematicsOpt (option 48)
Optimizing the machine
kinematics Backup/restore active kinematics
Test active kinematics
Optimize active kinematics
Extended Tool Management (option 93)
Extended tool management Python-based
Remote Desktop Manager (option 133)
Remote operation of external
computer units Windows on a separate computer unit
Incorporated in the TNC interface
Cross Talk Compensation – CTC (option number 141)
Compensation of axis couplings Determination of dynamically caused position deviation through axis
acceleration
Compensation of the TCP (Tool Center Point)
Position Adaptive Control – PAC (option 142)
Adaptive position control Changing of the control parameters depending on the position of
the axes in the working space
Changing of the control parameters depending on the speed or
acceleration of an axis
Load Adaptive Control – LAC (option 143)
Adaptive load control Automatic determination of workpiece weight and frictional forces
Changing of control parameters depending on the actual mass of
the workpiece
Active Chatter Control – ACC (option number 145)
Active chatter control Fully automatic function for chatter control during machining
Active Vibration Damping – AVD (option number 146)
Active vibration damping Damping of machine oscillations to improve the workpiece surface

TNC model, software and features
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Feature Content Level (upgrade functions)
Along with software options, significant further improvements
of the TNC software are managed via the Feature Content Level
upgrade functions. If you receive a software update to your TNC,
then the functions underlying the FCL are not automatically
available.
All upgrade functions are available to you without
surcharge when you receive a new machine.
Upgrade functions are identified in the manual as FCL n. The n
signifies the serial number of the development status.
You can purchase a code number in order to permanently enable
the FCL functions. For more information, contact your machine tool
builder or HEIDENHAIN.
Intended place of operation
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.
Legal information
This product uses open source software. Further information is
available on the control under
Programming and Editing operating mode
MOD function
LICENSE INFO soft key

Fundamentals
TNC model, software and features
12 HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015
New functions
New functions 73498x-02
DXF files can be opened directly on the TNC in order to extract
contours and point patterns, see "Programming: Data Transfer
from CAD Files", page 259
The active tool-axis direction can now be activated in manual
mode and during handwheel superimposition as a virtual
tool axis, see "Superimposing handwheel positioning during
program run: M118 (Miscellaneous Functions software option)",
page 383
Writing and reading data in freely definable tables, see "Freely
definable tables", page 414
New touch probe Cycle 484 for calibrating the wireless touch
probe TT 449, see Cycle Programming User's Manual
The new HR 520 and HR 550 FS handwheels are supported,
see "Traverse with electronic handwheels", page 481
New operating Cycle 225 Engraving,
see Cycle Programming User's Manual
New Active Chatter Control (ACC) software option, see "Active
Chatter Control ACC (option 145)", page 399
New manual probing cycle "Center line as datum", see "Setting a
center line as datum ", page 531
New function for rounding corners, see "Rounding corners:
M197", page 390
External access to the TNC can now be blocked with a MOD
function, see "External access", page 581

TNC model, software and features
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Changed functions 73498x-02
The maximum number of characters for the NAME and DOC
fields in the tool table has been increased from 16 to 32, see
"Enter tool data into the table", page 176
The columns ACC were added to the tool table, see "Enter tool
data into the table", page 176
Operation and positioning behavior of the manual probing cycles
has been improved, see "Using 3-D touch probes (option 17)",
page 507
Predefined values can now be entered into a cycle
parameter with the PREDEF function in cycles,
see Cycle Programming User's Manual
A new optimization algorithm is used for KinematicsOpt cycles,
see Cycle Programming User's Manual
With Cycle 257, CIRCULAR STUD, a parameter is now available
with which you can determine the approach position on the
stud, see User's Manual for Cycle Programming
With Cycle 256 RECTANGULAR STUD, a parameter is now
available with which you can determine the approach position on
the stud, see Cycle Programming User's Manual
With the manual "Basic Rotation" touch probe cycle, workpiece
misalignment can now be compensated for with a table
rotation, see "Compensation of workpiece misalignment by
rotating the table", page 522

Fundamentals
TNC model, software and features
14 HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015
New functions 81760x-01
New special operating mode RETRACT, see "Retraction after a
power interruption", page 567
New graphic simulation, see "Graphics (option 20)", page 548
New MOD function “tool usage file” within the machine
settings group, see "Tool usage file", page 583
New MOD function "set system time" within the systems
settings group, see "Set the system time", page 584
New MOD group “graphic settings”, see "Graphic settings",
page 580
With the new cutting data calculator you can calculate the
spindle speed and the feed rate, see "Cutting data calculator",
page 154
Now you can activate and deactivate the active chatter control
(ACC) with a soft key, see "Activating/deactivating ACC",
page 400
New if/then decisions have been introduced in the jump
commands, see "Programming if-then decisions", page 311
The character set of machining Cycle 225 Engraving has been
expanded to include more characters and the diameter sign,
see Cycle Programming User's Manual
New machining Cycle 275 Trochoidal Milling,
see Cycle Programming User's Manual
New machining Cycle 233 Face Milling,
see Cycle Programming User's Manual
In drilling Cycles 200, 203 and 205, the parameter Q395 DEPTH
REFERENCE has been introduced in order to evaluate the T
ANGLE, see Cycle Programming User's Manual
Probing Cycle 4 MEASURING IN 3-D has been introduced,
see Cycle Programming User's Manual

TNC model, software and features
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Changed functions 81760x-01
Up to 4 M functions are now allowed in an NC block, see
"Fundamentals", page 370
New soft keys for transferring values have been introduced in
the pocket calculator, see "Operation", page 151
The distance-to-go display can now also be displayed in the
input system, see "Select the position display", page 585
Several input parameters have been added to
Cycle 241 SINGLE-LIP DEEP HOLE DRILLING,
see Cycle Programming User's Manual
Parameter Q305 NUMBER IN TABLE has been added to Cycle
404, see Cycle Programming User's Manual
In the thread milling Cycles 26x, an approaching feed rate has
been introduced, see Cycle Programming User's Manual
In Cycle 205 Universal Deep Hole Drilling you can now
use parameter Q208 to define a feed rate for retraction,
see Cycle Programming User's Manual

Fundamentals
TNC model, software and features
16 HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015
New functions 81760x-02
Programs with .HU and .HC extensions can be selected and
processed in all operating modes
The functions SELECT PROGRAM and CALL SELECTED
PROGRAM have been added, see "Calling any program as a
subprogram", page 287
New FEED DWELL function for programming repeating dwell
times, see "Dwell time FUNCTION FEED DWELL", page 420
The FN18 functions have been expanded, see "FN 18:
SYSREAD: Reading system data", page 323
USB data carriers can be locked with the SELinux security
software, see "SELinux security software", page 95
The machine parameter posAfterContPocket (No. 201007) has
been introduced, which influences positioning after an SL cycle,
see "Machine-specific user parameters", page 608
Protective zones can be defined in the MOD menu, see
"Entering traverse limits", page 582
Write protection is possible for single lines in the preset table,
see "Saving the datums in the preset table", page 498
New manual probing function for aligning a plane, see
"Measuring 3-D basic rotation", page 524
New function for aligning the machining plane without
rotary axes, see "Tilt the working plane without rotary axes",
page 446
CAD files can be opened without option number 42, see "CAD
viewer", page 261
New software option number 93 Extended Tool Management,
see "Calling tool management", page 199

TNC model, software and features
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Modified functions 81760x-02
FZ and FU feed rate input possible in the Tool Call block, see
"Call tool data", page 187
The input range of the DOC column in the pocket table has
been expanded to 32 characters, see "Pocket table for tool
changer", page 184
Commands FN 15, FN 31, FN 32, FT and FMAXT from
predecessor controls no longer generate ERROR blocks during
import. When simulating or running an NC program with these
commands, the control interrupts the NC program with an error
message that helps you to find an alternative implementation
Miscellaneous functions M104, M105, M112, M114, M124,
M134, M142, M150, M200 - M204 from predecessor controls
no longer generate ERROR blocks during import. When
simulating or running an NC program with these miscellaneous
functions, the control interrupts the NC program with an error
message that helps you to find an alternative implementation,
see "Comparison: Miscellaneous functions", page 647
The maximum file size of files output with FN 16: F-PRINT has
been increased from 4 KB to 20 KB
The Preset.PR preset table is write-protected in Programming
operating mode, see "Saving the datums in the preset table",
page 498
The input range of the Q parameter list for defining the QPARA
tab on the status display consists of 132 input positions, see
"Displaying Q parameters (QPARA tab)", page 87
Manual calibration of the touch probe with fewer pre-positioning
movements, see "Calibrating a 3-D touch trigger probe (option
17)", page 513
The position display takes into account the DL oversizes
programmed in the Tool Call block, selectable as an oversize of
the workpiece or tool, see "Delta values for lengths and radii",
page 175
In single blocks, the control executes each point individually
with point pattern cycles and CYCL CALL PAT, see "Program
run", page 561
Rebooting the control is no longer possible with the END key,
but with the RESTART soft key, see "Switch-off", page 478
The control displays the contouring feed rate in manual mode,
see "Spindle speed S, feed rate F and miscellaneous function
M", page 491
Deactivate tilting in manual mode is only possible via the 3D-
ROT menu, see "Activating manual tilting:", page 538
The machine parameter maxLineGeoSearch(No. 105408)
has been raised to max 50000, see "Machine-specific user
parameters", page 608
The names of software options number 8, 9 and 21 have
changed, see "Software options", page 8

Fundamentals
TNC model, software and features
18 HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015
New and modified cycle functions 81760x-02
New Cycle 239 ASCERTAIN THE LOAD for LAC (Load Adapt.
Control) load-dependent adaptation of control parameters
(option 143)
Cycle 270 CONTOUR TRAIN DATA has been added (option 19)
Cycle 39 CYL. SURFACE CONTOUR has been added (option 1)
The character set of Machining Cycle 225 ENGRAVING has been
expanded with the CE character, ß, the @ character and system
time
Cycles 252-254 (option 19) have been expanded with the
optional parameter Q439
Cycle 22 ROUGH-OUT (option 19) has been expanded with the
optional parameters Q401, Q404
Cycle 484 CALIBRATE IR TT(option 17) has been expanded with
the optional parameter Q536

TNC model, software and features
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New functions 81760x-03
Manual probe functions create a completely new line in the
preset table, see "Writing measured values from the touch
probe cycles to the preset table", page 512
Manual probe functions can write in a password-protected line,
see "Writing measured values from the touch probe cycles to
the preset table", page 512
The column AFC-LOAD was added to the tool table. In this
column you can set a tool-dependent standard reference
power for the adaptive feed control AFC, which you establish
once with a teach-in cut, see "Enter tool data into the table",
page 176
The column KINEMATIC has been added to the tool table, see
"Enter tool data into the table", page 176
When importing tool data, the CSV file may contain additional
table columns not recognized by the control system. On import,
a message appears about the unrecognized columns with a
note stating these will not be imported, see "Import and export
tool data", page 205
New function FUNCTION S-PULSE for programming pulsing
shaft speeds, see "Pulsing spindle speed FUNCTION S-PULSE",
page 419
It is possible to search quickly for a file in file management by
entering the first letter, see "Selecting drives, directories and
files", page 123
With active structuring, the structuring block can be edited
in the structure window, see "Definition and applications",
page 150
The FN18 functions have been expanded, see "FN 18:
SYSREAD: Reading system data", page 323
The control differentiates between interrupted or stopped NC
programs. In the interrupted status, the control offers more
intervention options, see "Interrupt machining", page 563
In the Tilt working plane function, you can choose an animated
aid, see "Overview", page 426
The software option number 42 DXF Converter now also
produces CR circles, see "Basic settings", page 264

Fundamentals
TNC model, software and features
20 HEIDENHAIN | TNC 620 | Conversational Programming User's Manual | 10/2015
Modified functions 81760x-03
When editing the tool table or tool management, only the
current table line is blocked, see "Editing the tool table",
page 180
When importing tool tables, missing tool types are imported as
an Unidentified Type, see "Importing tool tables", page 183
You cannot delete the tool data of tools still stored in the pocket
table, see "Editing the tool table", page 180
In all manual probing functions, you can quickly select the
starting angle of holes and studs using soft keys (paraxial probe
direction), see "Functions in touch probe cycles", page 508
When probing, after acceptance of the actual value of the 1st
point, the soft key for the 2nd point for the axis direction is
shown
In all manual probing functions, the direction of the reference
axis is suggested as a default
In manual probing cycles the hard keys END and ADOPT
ACTUAL POSITION may be used
The display of the machining feed rate has been changed
in manual mode, see "Spindle speed S, feed rate F and
miscellaneous function M", page 491
In the file management, the programs or directories at the
cursor position are also displayed in a separate field beneath the
current path display
Editing a block does not mean that block marking is canceled.
If a block is edited in active block marking, and then another
block is selected via syntax search, the marking is expanded to
include the newly chosen block, see "Marking, copying, cutting
and inserting program sections", page 115
In the screen layout PROGRAM + SECTS it is possible to edit the
structure in the structure window, "Definition and applications"
The functions APPR CT and DEP CT allow approach to and
departure from a helix. This movement is carried out as a helix
with an even pitch, see "Overview: Types of paths for contour
approach and departure", page 216
The functions APPR LT, APPR LCT, DEP LT and DEP LCT
position all three axes at on the auxiliary point at the same time,
see "Approaching on a straight line with tangential connection:
APPR LT", page 219, see "Approaching on a circular path with
tangential connection from a straight line to the contour: APPR
LCT", page 221
The values entered for the traverse limits are checked for
validity, see "Entering traverse limits", page 582
When calculating the axis angle in the axes chosen with M138,
the control sets the value to 0, see "Selecting tilting axes:
M138", page 455
The input range in columns SPA, SPB and SPC in the
preset table has been expanded to 999,9999, see "Datum
management with the preset table", page 497
Tilting is permitted in combination with mirroring, see "The
PLANE function: Tilting the working plane (software option 8)",
page 425