HEIDENHAIN TNC 640 User Manual

TNC 640

User's Manual

HEIDENHAIN

Conversational Programming

NC Software 340590-02 340591-02 340594-02

English (en) 5/2013

Controls of the TNC

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

Alphanumeric keyboard

Key Function

File names, comments

DIN/ISO programming

Machine operating modes

Key Function

Manual operation

Electronic handwheel

Positioning with manual data input

Program run, single block

Program run, full sequence

2

Programming modes

Key Function

Programming

Test run

Program/file management,

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

Move highlight

Go directly to blocks, cycles and parameter functions

Potentiometer for feed rate and spindle speed

Feed rate	Spindle speed

TNC 640 | User's Manual

HEIDENHAIN Conversational Programming | 5/2013

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

TNC 640 | User's Manual

HEIDENHAIN Conversational Programming | 5/2013

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
	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

3

Controls of the TNC

4	TNC 640 | User's Manual
	HEIDENHAIN Conversational Programming | 5/2013

Fundamentals

Fundamentals

About this manual

About this manual

The symbols used in this manual are described below.

This symbol indicates that important notes about the function described must be regarded.

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 light 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: [e-mail].

6	TNC 640 | User's Manual
	HEIDENHAIN Conversational Programming | 5/2013

TNC model, software and features

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 640	340590-02
TNC 640 E	340591-02
TNC 640 Programming Station	340594-02

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 4 axes

The machine tool builder adapts the usable features of the TNC to his machine by 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 tool.

TNC functions that may not be available on your machine include:

Tool measurement with the TT

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.

User's Manual for Cycle Programming:

All of the cycle functions (touch probe cycles and fixed cycles) are described in the Cycle Programming User’s Manual. Please contact HEIDENHAIN if you require a copy of this User’s Manual. ID: 892905-xx

TNC 640 | User's Manual	7
HEIDENHAIN Conversational Programming | 5/2013

Fundamentals

TNC model, software and features

Software options

The TNC 640 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:

Hardware, options

■1st additional axis for 4 axes plus spindle

■2nd additional axis for 5 axes plus spindle

Software option 1 (option number 08)

Rotary table machining	■	Programming of cylindrical contours as if in two axes
	■	Feed rate in distance per minute
Coordinate transformation	■	Working plane, tilting the ...
Interpolation	■	Circle in 3 axes with tilted working plane (spacial arc)
Software option 2 (option number 09)
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 and tool direction
Interpolation	■	Linear in 5 axes (subject to export permit)

HEIDENHAIN DNC (option number 18)

■Communication with external PC applications over COM component

Display step (Option number 23)

Input resolution and display	■	Linear axes to 0.01 µm
step	■	Rotary axes to 0.00001°

Dynamic Collision Monitoring (DCM) software option (option number 40)

Collision monitoring in all	■	The machine manufacturer defines objects to be monitored
machine operating modes	■	Three warning levels in manual operation
	■	Program interrupt during automatic operation
	■	Includes monitoring of 5-axis movements

Software option for additional conversational languages (option number 41)

Additional conversational	■	Slovenian
languages	■	Norwegian
	■	Slovak
	■	Latvian
	■	Korean
	■	Estonian
	■	Turkish
	■	Romanian
	■	Lithuanian

8

TNC 640 | User's Manual

HEIDENHAIN Conversational Programming | 5/2013

TNC model, software and features

DXF Converter software option (option number 42)

	Extracting contour	■	Supported DXF format: AC1009 (AutoCAD R12)
	programs and machining	■	For contours and point patterns
	positions from DXF data.
		■	Simple and convenient specification of reference points
	Extracting contour sections
	from plain-language	■	Select graphical features of contour sections from conversational
	programs.		programs

Adaptive Feed Control (AFC) software option (option number 45)

Function for adaptive feedrate control for optimizing the machining conditions during series production

■Recording the actual spindle power by means of a teach-in cut

■Defining the limits of automatic feed rate control

■Fully automatic feed control during program run

KinematicsOpt software option (option number 48)

Touch-probe cycles for automatic testing and optimization of the machine kinematics

■Backup/restore active kinematics

■Test active kinematics

■Optimize active kinematics

Mill-Turning software option (option number 50)

Functions for milling/turning ■		Switching between Milling/Turning mode of operation
mode	■	Constant cutting speed
	■	Tool-tip radius compensation
	■	Turning cycles

Extended Tool Managment software option (option number 93)

■Extended tool management, python-based

Remote Desktop Manager software option (option number 133)

Remote operation of external computer units (e.g. Windows PC) via the TNC user interface

■Windows on a separate computer unit

■Incorporated in the TNC interface

TNC 640 | User's Manual	9
HEIDENHAIN Conversational Programming | 5/2013

Fundamentals

TNC model, software and features

Cross Talk Compensation (CTC) software option (option number 141)

Compensation of axis	■	Determination of dynamically caused position deviation through axis
couplings		acceleration
	■	Compensation of the TCP

Position Adaptive Control (PAC) software option (option number 142)

Changing control	■	Changing of the control parameters depending on the position of the
parameters		axes in the working space
	■	Changing of the control parameters depending on the speed or
		acceleration of an axis

Load Adaptive Control (LAC) software option (option number 143)

Dynamic changing of control	■	Automatic determination of workpiece weight and frictional forces
parameters	■	Continuous adaptation of the parameters of the adaptive precontrolling
		to the actual weight of the workpiece during machining

Active Chatter Control (ACC) software option (option number 145)

Fully automatic function for chatter control during machining

10	TNC 640 | User's Manual
	HEIDENHAIN Conversational Programming | 5/2013

TNC model, software and features

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. Functions subject to the FCL are not available simply by updating the software on your TNC.

All upgrade functions are available to you without surcharge when you receive a new machine.

Upgrade functions are identified in the manual with FCL n, where n indicates the sequential number of the feature content level.

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

TNC 640 | User's Manual	11
HEIDENHAIN Conversational Programming | 5/2013

Fundamentals

TNC model, software and features

New functions

New functions 34059x-02

DXF files can be opened directly on the TNC in order to extract contours and point patterns (Programming: Data transfer from DXF files or plain-language contours, page 243).

The active tool-axis direction can now be activated in manual mode and during handwheel superimposition as a virtual tool axis (Superimposing handwheel positioning during program run: M118 , page 360).

The machine manufacturer can now define any areas on the machine for collision monitoring (Dynamic Collision Monitoring (software option), page 371).

Writing and reading data in freely definable tables (Freely definable tables, page 402).

The Adaptive Feed Control (AFC) function has been integrated (Adaptive Feed Control Software Option (AFC), page 377)

New touch probe cycle 484 for calibrating the wireless TT 449 tool touch probe (see User's Manual for Cycles).

The new HR 520 and HR 550 FS handwheels are supported (Traverse with electronic handwheels, page 490).

New machining cycle 225 ENGRAVING (see User’s Manual for

Cycle Programming)

New Active Chatter Control (ACC) software option (Active Chatter

Control (ACC; software option), page 389).

New manual probing cycle "Center line as datum" (Setting a center line as datum , page 535).

New function for rounding corners (Rounding corners: M197, page 366).

External access to the TNC can now be blocked with a MOD function (External access, page 584).

12	TNC 640 | User's Manual
	HEIDENHAIN Conversational Programming | 5/2013

TNC model, software and features

Modified functions 34059x-02

The maximum number of characters for the NAME and DOC fields in the tool table has been increased from 16 to 32 (Enter tool data into the table, page 160).

The columns AFC and ACC were added to the tool table (Enter tool data into the table, page 160).

Operation and position behavior of the manual probing cycles has been improved (Using 3-D touch probes , page 514).

Predefined values can now be entered into a cycle parameter with the PREDEF function in cycles (see User’s Manual for Cycle Programming).

The status display has been expanded with the AFC tab (Additional status displays, page 76).

The FUNCTION TURNDATA SPIN rotational function has been expanded with an input option for maximum speed (Program spindle speed, page 464).

A new optimization algorithm is now used with the KinematicsOpt cycles (see User’s Manual for Cycle Programming).

With Cycle 257, circular stud milling, 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 User's Manual for Cycle Programming).

With the "Basic Rotation" probing cycle, workpiece misalignment can now be compensated for via a table rotation (Compensation of workpiece misalignment by rotating the table, page 528)

TNC 640 | User's Manual	13
HEIDENHAIN Conversational Programming | 5/2013

Fundamentals

TNC model, software and features

14	TNC 640 | User's Manual
	HEIDENHAIN Conversational Programming | 5/2013

Contents
1	First Steps with the TNC 640.........................................................................................................	47
2	Introduction.......................................................................................................................................	69
3	Programming: Fundamentals, file management...........................................................................	89
4	Programming: Programming aids................................................................................................	131
5	Programming: Tools.......................................................................................................................	155
6	Programming: Programming contours........................................................................................	191
7	Programming: Data transfer from DXF files or plain-language contours.................................	243
8	Programming: Subprograms and program section repeats......................................................	261
9	Programming: Q Parameters.........................................................................................................	277
10	Programming: Miscellaneous functions.......................................................................................	347
11	Programming: Special functions..................................................................................................	367
12	Programming: Multiple Axis Machining......................................................................................	409
13	Programming: Pallet editor...........................................................................................................	453
14	Programming: Turning Operations...............................................................................................	459
15	Manual operation and setup.........................................................................................................	485
16	Positioning with Manual Data Input............................................................................................	547
17	Test run and program run.............................................................................................................	553
18	MOD functions................................................................................................................................	581
19	Tables and overviews.....................................................................................................................	605

TNC 640 | User's Manual	15
HEIDENHAIN Conversational Programming | 5/2013

Contents

16	TNC 640 | User's Manual
	HEIDENHAIN Conversational Programming | 5/2013

1 First Steps with the TNC 640.........................................................................................................		47
1.1	Overview.................................................................................................................................................	48
1.2	Machine switch-on.................................................................................................................................	48
	Acknowledging the power interruption and moving to the reference points...........................................	48
1.3	Programming the first part...................................................................................................................	49
	Selecting the correct operating mode.....................................................................................................	49
	The most important TNC keys.................................................................................................................	49
	Creating a new program/file management..............................................................................................	50
	Defining a workpiece blank......................................................................................................................	51
	Program layout.........................................................................................................................................	52
	Programming a simple contour................................................................................................................	53
	Creating a cycle program.........................................................................................................................	56
1.4	Graphically testing the first part..........................................................................................................	58
	Selecting the correct operating mode.....................................................................................................	58
	Selecting the tool table for the test run..................................................................................................	58
	Choosing the program you want to test.................................................................................................	59
	Selecting the screen layout and the view...............................................................................................	59
	Starting the test run.................................................................................................................................	60
1.5	Setting up tools.....................................................................................................................................	61
	Selecting the correct operating mode.....................................................................................................	61
	Preparing and measuring tools................................................................................................................	61
	The tool table TOOL.T.............................................................................................................................	62
	The pocket table TOOL_P.TCH.................................................................................................................	63
1.6	Workpiece setup.....................................................................................................................................	64
	Selecting the correct operating mode.....................................................................................................	64
	Clamping the workpiece..........................................................................................................................	64
	Workpiece alignment with 3-D touch probe............................................................................................	65
	Datum setting with 3-D touch probe.......................................................................................................	66
1.7	Running the first program....................................................................................................................	67
	Selecting the correct operating mode.....................................................................................................	67
	Choosing the program you want to run..................................................................................................	67
	Start the program.....................................................................................................................................	67

TNC 640 | User's Manual	17
HEIDENHAIN Conversational Programming | 5/2013

Contents

2 Introduction.......................................................................................................................................		69
2.1	The TNC 640...........................................................................................................................................	70
	Programming: HEIDENHAIN conversational and ISO formats.................................................................	70
	Compatibility.............................................................................................................................................	70
2.2	Visual display unit and operating panel..............................................................................................	71
	Display screen..........................................................................................................................................	71
	Setting the screen layout.........................................................................................................................	71
	Control Panel............................................................................................................................................	72
2.3	Modes of Operation...............................................................................................................................	73
	Manual Operation and El. Handwheel.....................................................................................................	73
	Positioning with Manual Data Input.........................................................................................................	73
	Programming............................................................................................................................................	73
	Test Run...................................................................................................................................................	74
	Program Run, Full Sequence and Program Run, Single Block.................................................................	74
2.4	Status displays.......................................................................................................................................	75
	"General" status display............................................................................................................................	75
	Additional status displays.........................................................................................................................	76
2.5	Window Manager...................................................................................................................................	83
	Task bar....................................................................................................................................................	84
2.6	SELinux security software.....................................................................................................................	85
2.7	Accessories: HEIDENHAIN 3-D Touch Probes and Electronic Handwheels.......................................	86
	3-D touch probes.....................................................................................................................................	86
	HR electronic handwheels.......................................................................................................................	87

18	TNC 640 | User's Manual
	HEIDENHAIN Conversational Programming | 5/2013

3 Programming: Fundamentals, file management...........................................................................		89
3.1	Fundamentals.........................................................................................................................................	90
	Position encoders and reference marks..................................................................................................	90
	Reference system....................................................................................................................................	90
	Reference system on milling machines...................................................................................................	91
	Designation of the axes on milling machines..........................................................................................	91
	Polar coordinates......................................................................................................................................	92
	Absolute and incremental workpiece positions.......................................................................................	93
	Selecting the datum.................................................................................................................................	94
3.2 Opening programs and entering..........................................................................................................		95
	Organization of an NC program in HEIDENHAIN Conversational format.................................................	95
	Define the blank: BLK FORM..................................................................................................................	95
	Opening a new part program..................................................................................................................	96
	Programming tool movements in conversational.....................................................................................	97
	Actual position capture.............................................................................................................................	99
	Editing a program...................................................................................................................................	100
	The TNC search function.......................................................................................................................	103
3.3	File manager: Fundamentals...............................................................................................................	105
	Files........................................................................................................................................................	105
	Displaying externally generated files on the TNC..................................................................................	107
	Data Backup...........................................................................................................................................	107

TNC 640 | User's Manual	19
HEIDENHAIN Conversational Programming | 5/2013

Contents

3.4 Working with the file manager..........................................................................................................	108
Directories..............................................................................................................................................	108
Paths.......................................................................................................................................................	108
Overview: Functions of the file manager..............................................................................................	109
Calling the file manager.........................................................................................................................	110
Selecting drives, directories and files....................................................................................................	111
Creating a new directory.......................................................................................................................	112
Creating a new file.................................................................................................................................	112
Copying a single file...............................................................................................................................	112
Copying files into another directory.......................................................................................................	113
Copying a table......................................................................................................................................	114
Copying a directory................................................................................................................................	115
Choosing one of the last files selected.................................................................................................	115
Deleting a file.........................................................................................................................................	116
Deleting a directory................................................................................................................................	116
Tagging files...........................................................................................................................................	117
Renaming a file......................................................................................................................................	118
Sorting files............................................................................................................................................	118
Additional functions................................................................................................................................	119
Additional tools for management of external file types.........................................................................	120
Data transfer to/from an external data medium....................................................................................	125
The TNC in a network............................................................................................................................	127
USB devices on the TNC.......................................................................................................................	128

20	TNC 640 | User's Manual
	HEIDENHAIN Conversational Programming | 5/2013

4 Programming: Programming aids................................................................................................		131
4.1	Adding comments................................................................................................................................	132
	Application..............................................................................................................................................	132
	Entering comments during programming..............................................................................................	132
	Inserting comments after program entry..............................................................................................	132
	Entering a comment in a separate block...............................................................................................	132
	Functions for editing of the comment...................................................................................................	133
4.2	Display of NC Programs......................................................................................................................	134
	Syntax highlighting.................................................................................................................................	134
	Scrollbar..................................................................................................................................................	134
4.3	Structuring programs...........................................................................................................................	135
	Definition and applications.....................................................................................................................	135
	Displaying the program structure window / Changing the active window.............................................	135
	Inserting a structuring block in the (left) program window....................................................................	135
	Selecting blocks in the program structure window...............................................................................	135
4.4	Calculator..............................................................................................................................................	136
	Operation................................................................................................................................................	136
4.5	Programming graphics........................................................................................................................	138
	Generating / not generating graphics during programming...................................................................	138
	Generating a graphic for an existing program.......................................................................................	138
	Block number display ON/OFF...............................................................................................................	139
	Erasing the graphic................................................................................................................................	139
	Showing grid lines..................................................................................................................................	139
	Magnification or reduction of details.....................................................................................................	140

TNC 640 | User's Manual	21
HEIDENHAIN Conversational Programming | 5/2013

Contents

4.6 Error messages.....................................................................................................................................	141
Display of errors.....................................................................................................................................	141
Open the error window.........................................................................................................................	141
Closing the error window......................................................................................................................	141
Detailed error messages........................................................................................................................	142
INTERNAL INFO soft key.......................................................................................................................	142
Clearing errors........................................................................................................................................	143
Error log..................................................................................................................................................	143
Keystroke log..........................................................................................................................................	144
Informational texts.................................................................................................................................	145
Saving service files................................................................................................................................	145
Calling the TNCguide help system........................................................................................................	146
4.7 TNCguide context-sensitive help system..........................................................................................	147
Application..............................................................................................................................................	147
Working with the TNCguide..................................................................................................................	148
Downloading current help files..............................................................................................................	152

22	TNC 640 | User's Manual
	HEIDENHAIN Conversational Programming | 5/2013

5 Programming: Tools.......................................................................................................................		155
5.1	Entering tool-related data...................................................................................................................	156
	Feed rate F.............................................................................................................................................	156
	Spindle speed S.....................................................................................................................................	157
5.2	Tool data................................................................................................................................................	158
	Requirements for tool compensation....................................................................................................	158
	Tool number, tool name.........................................................................................................................	158
	Tool length L..........................................................................................................................................	158
	Tool radius R..........................................................................................................................................	158
	Delta values for lengths and radii..........................................................................................................	159
	Entering tool data into the program......................................................................................................	159
	Enter tool data into the table.................................................................................................................	160
	Importing tool tables..............................................................................................................................	169
	Pocket table for tool changer.................................................................................................................	170
	Call tool data..........................................................................................................................................	173
	Tool change............................................................................................................................................	175
	Tool usage test.......................................................................................................................................	178
	Tool management (software option)......................................................................................................	180
5.3	Tool compensation...............................................................................................................................	187
	Introduction.............................................................................................................................................	187
	Tool length compensation......................................................................................................................	187
	Tool radius compensation......................................................................................................................	188

TNC 640 | User's Manual	23
HEIDENHAIN Conversational Programming | 5/2013

Contents

6 Programming: Programming contours........................................................................................		191
6.1	Tool movements...................................................................................................................................	192
	Path functions........................................................................................................................................	192
	FK free contour programming................................................................................................................	192
	Miscellaneous functions M....................................................................................................................	192
	Subprograms and program section repeats..........................................................................................	193
	Programming with Q parameters..........................................................................................................	193
6.2 Fundamentals of Path Functions........................................................................................................		194
	Programming tool movements for workpiece machining......................................................................	194
6.3 Approaching and departing a contour...............................................................................................		198
	Overview: Types of paths for contour approach and departure.............................................................	198
	Important positions for approach and departure....................................................................................	199
	Approaching on a straight line with tangential connection: APPR LT....................................................	201
	Approaching on a straight line perpendicular to the first contour point: APPR LN................................	201
	Approaching on a circular path with tangential connection: APPR CT...................................................	202
	Approaching on a circular path with tangential connection from a straight line to the contour: APPR
	LCT.........................................................................................................................................................	203
	Departing in a straight line with tangential connection: DEP LT...........................................................	204
	Departing in a straight line perpendicular to the last contour point: DEP LN........................................	204
	Departing on a circular path with tangential connection: DEP CT.........................................................	205
	Departing on a circular arc tangentially connecting the contour and a straight line: DEP LCT...............	205
6.4	Path contours - Cartesian coordinates...............................................................................................	206
	Overview of path functions...................................................................................................................	206
	Straight line L.........................................................................................................................................	207
	Inserting a chamfer between two straight lines....................................................................................	208
	Corner rounding RND.............................................................................................................................	209
	Circle center CC.....................................................................................................................................	210
	Circular path C around circle center CC................................................................................................	211
	Circle CR with defined radius................................................................................................................	212
	Circle CT with tangential connection.....................................................................................................	214
	Example: Linear movements and chamfers with Cartesian coordinates...............................................	215
	Example: Circular movements with Cartesian coordinates...................................................................	216
	Example: Full circle with Cartesian coordinates....................................................................................	217

24	TNC 640 | User's Manual
	HEIDENHAIN Conversational Programming | 5/2013

6.5 Path contours – Polar coordinates.....................................................................................................	218
Overview................................................................................................................................................	218
Zero point for polar coordinates: pole CC..............................................................................................	219
Straight line LP.......................................................................................................................................	219
Circular path CP around pole CC...........................................................................................................	220
Circle CTP with tangential connection...................................................................................................	220
Helix........................................................................................................................................................	221
Example: Linear movement with polar coordinates..............................................................................	223
Example: Helix........................................................................................................................................	224
6.6 Path contours – FK free contour programming................................................................................	225
Fundamentals.........................................................................................................................................	225
FK programming graphics......................................................................................................................	227
Initiating the FK dialog...........................................................................................................................	229
Pole for FK programming.......................................................................................................................	229
Free straight line programming..............................................................................................................	230
Free circular path programming.............................................................................................................	231
Input options..........................................................................................................................................	232
Auxiliary points.......................................................................................................................................	235
Relative data...........................................................................................................................................	236
Example: FK programming 1.................................................................................................................	238
Example: FK programming 2.................................................................................................................	239
Example: FK programming 3.................................................................................................................	240

TNC 640 | User's Manual	25
HEIDENHAIN Conversational Programming | 5/2013

Contents

7 Programming: Data transfer from DXF files or plain-language contours.................................	243
7.1 Processing DXF Files (Software Option)...........................................................................................	244
Application..............................................................................................................................................	244
Opening a DXF file.................................................................................................................................	245
Working with the DXF converter...........................................................................................................	245
Basic settings.........................................................................................................................................	246
Setting layers..........................................................................................................................................	248
Defining the datum................................................................................................................................	249
Selecting and saving a contour..............................................................................................................	251
Selecting and saving machining positions.............................................................................................	255

26	TNC 640 | User's Manual
	HEIDENHAIN Conversational Programming | 5/2013

8 Programming: Subprograms and program section repeats......................................................		261
8.1	Labeling Subprograms and Program Section Repeats....................................................................	262
	Label.......................................................................................................................................................	262
8.2	Subprograms........................................................................................................................................	263
	Operating sequence...............................................................................................................................	263
	Programming notes................................................................................................................................	263
	Programming a subprogram...................................................................................................................	263
	Calling a subprogram.............................................................................................................................	264
8.3	Program-section repeats.....................................................................................................................	265
	Label LBL...............................................................................................................................................	265
	Operating sequence...............................................................................................................................	265
	Programming notes................................................................................................................................	265
	Programming a program section repeat................................................................................................	265
	Calling a program section repeat...........................................................................................................	266
8.4	Any desired program as subprogram................................................................................................	267
	Operating sequence...............................................................................................................................	267
	Programming notes................................................................................................................................	267
	Calling any program as a subprogram...................................................................................................	268
8.5	Nesting..................................................................................................................................................	269
	Types of nesting.....................................................................................................................................	269
	Nesting depth.........................................................................................................................................	269
	Subprogram within a subprogram.........................................................................................................	270
	Repeating program section repeats.......................................................................................................	271
	Repeating a subprogram........................................................................................................................	272
8.6	Programming examples.......................................................................................................................	273
	Example: Milling a contour in several infeeds.......................................................................................	273
	Example: Groups of holes.....................................................................................................................	274
	Example: Group of holes with several tools..........................................................................................	275

TNC 640 | User's Manual	27
HEIDENHAIN Conversational Programming | 5/2013

Contents

9 Programming: Q Parameters.........................................................................................................		277
9.1	Principle and overview of functions..................................................................................................	278
	Programming notes................................................................................................................................	279
	Calling Q parameter functions...............................................................................................................	280
9.2	Part families—Q parameters in place of numerical values..............................................................	281
	Application..............................................................................................................................................	281
9.3	Describing contours with mathematical functions..........................................................................	282
	Application..............................................................................................................................................	282
	Overview................................................................................................................................................	282
	Programming fundamental operations...................................................................................................	283
9.4	Angle functions (trigonometry)..........................................................................................................	284
	Definitions...............................................................................................................................................	284
	Programming trigonometric functions...................................................................................................	284
9.5	Calculation of circles............................................................................................................................	285
	Application..............................................................................................................................................	285
9.6	If-then decisions with Q parameters.................................................................................................	286
	Application..............................................................................................................................................	286
	Unconditional jumps...............................................................................................................................	286
	Programming if-then decisions..............................................................................................................	286
	Abbreviations used:................................................................................................................................	287
9.7	Checking and changing Q parameters...............................................................................................	288
	Procedure...............................................................................................................................................	288
9.8	Additional functions.............................................................................................................................	290
	Overview................................................................................................................................................	290
	FN 14: ERROR: Displaying error messages...........................................................................................	291
	FN 16: F-PRINT: Output of formatted texts and Q parameter values.....................................................	295
	FN 18: SYS-DATUM READ: Reading system data.................................................................................	299
	FN 19: PLC: Transfer values to PLC......................................................................................................	308
	FN 20: WAIT FOR: NC and PLC synchronization..................................................................................	308
	FN 29: PLC: Transfer values to the PLC................................................................................................	310
	FN 37: EXPORT......................................................................................................................................	310

28	TNC 640 | User's Manual
	HEIDENHAIN Conversational Programming | 5/2013

9.9	Accessing tables with SQL commands.............................................................................................	311
	Introduction.............................................................................................................................................	311
	A transaction..........................................................................................................................................	312
	Programming SQL commands...............................................................................................................	314
	Overview of the soft keys.....................................................................................................................	314
	SQL BIND...............................................................................................................................................	315
	SQL SELECT..........................................................................................................................................	316
	SQL FETCH............................................................................................................................................	318
	SQL UPDATE..........................................................................................................................................	319
	SQL INSERT...........................................................................................................................................	319
	SQL COMMIT........................................................................................................................................	320
	SQL ROLLBACK.....................................................................................................................................	320
9.10	Entering formulas directly...................................................................................................................	321
	Entering formulas...................................................................................................................................	321
	Rules for formulas..................................................................................................................................	323
	Programming example...........................................................................................................................	324
9.11	String parameters................................................................................................................................	325
	String processing functions...................................................................................................................	325
	Assigning string parameters..................................................................................................................	326
	Chain-linking string parameters..............................................................................................................	326
	Converting a numerical value to a string parameter..............................................................................	327
	Copying a substring from a string parameter........................................................................................	328
	Converting a string parameter to a numerical value..............................................................................	329
	Checking a string parameter..................................................................................................................	330
	Finding the length of a string parameter...............................................................................................	331
	Comparing alphabetic sequence............................................................................................................	332
	Reading machine parameters.................................................................................................................	333

TNC 640 | User's Manual	29
HEIDENHAIN Conversational Programming | 5/2013

Contents

..................................................................................................................9.12 Preassigned Q parameters	336
Values from the PLC: Q100 to Q107.....................................................................................................	336
Active tool radius: Q108.........................................................................................................................	336
Tool axis: Q109.......................................................................................................................................	336
Spindle status: Q110..............................................................................................................................	337
Coolant on/off: Q111...............................................................................................................................	337
Overlap factor: Q112..............................................................................................................................	337
Unit of measurement for dimensions in the program: Q113.................................................................	337
Tool length: Q114...................................................................................................................................	337
Coordinates after probing during program run.......................................................................................	338
Deviation between actual value and nominal value during automatic tool measurement with the TT
130..........................................................................................................................................................	338
Tilting the working plane with mathematical angles: rotary axis coordinates calculated by the TNC.....	338
Measurement results from touch probe cycles (see also User’s Manual for Cycle Programming)........	339

.......................................................................................................................9.13 Programming examples	341
Example: Ellipse.....................................................................................................................................	341
Example: Concave cylinder machined with spherical cutter..................................................................	343
Example: Convex sphere machined with end mill.................................................................................	345

30	TNC 640 | User's Manual
	HEIDENHAIN Conversational Programming | 5/2013