HEIDENHAIN TNC 640 User Manual

TNC 640

User's Manual

HEIDENHAIN

Conversational Programming

NC Software 340590-04 340591-04 340595-04

English (en) 3/2014

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

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

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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

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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	Skip dialog questions, delete
ENT	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

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Fundamentals

Fundamentals

About this manual

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 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].

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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	340590-04
TNC 640 E	340591-04
TNC 640 Programming Station	340595-04

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

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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:

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 down 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

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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

Synchronizing Functions software option (option number 135)

Real Time Coupling (RTC)

■

Coupling of axes

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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

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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

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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 249).

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 366).

The machine manufacturer can now define any areas on the machine for collision monitoring ("Dynamic Collision Monitoring (software option)", page 377).

Writing and reading data in freely definable tables ("Freely definable tables", page 410).

The Adaptive Feed Control (AFC) function has been integrated ("Adaptive Feed Control Software Option (AFC)", page 383)

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 498).

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 396).

New manual probing cycle "Center line as datum" ("Setting a center line as datum ", page 543).

New function for rounding corners ("Rounding corners: M197", page 372).

External access to the TNC can now be blocked with a MOD function ("External access", page 593).

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TNC model, software and features

New 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 166).

The columns AFC and ACC were added to the tool table ("Enter tool data into the table", page 166).

Operation and position behavior of the manual probing cycles has been improved ("Using 3-D touch probes ", page 522).

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 turning function has been expanded with an input option for maximum speed ("Program spindle speed", page 472).

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 536)

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Fundamentals

TNC model, software and features

New functions 34059x-04

New special operating mode Retraction ("Retraction after a power interruption", page 580).

New graphic simulation ("Graphics ", page 562).

New MOD function "tool usage file" within the machine settings group ("Tool usage file", page 595).

New MOD function "set system time" within the systems settings group ("Set the system time", page 597).

New MOD group "graphic settings" ("Graphic settings", page 592).

With the new syntax for the adaptive feed control (AFC) you can start or end a teach-in step ("Recording a teach-in cut", page 388).

With the new cutting data calculator you can calculate the spindle speed and the feed rate ("Cutting data calculator", page 141).

In the TURNDATA function, you can now define the effect of the tool compensation ("Tool compensation in the program", page 474).

Now you can activate and deactivate the active chatter compensation (ACC) by soft key ("Activating/deactivating ACC", page 397).

New if/then decisions were introduced in the jump commands ("Programming if-then decisions", page 292).

The character set of the fixed cycle 225 Engraving was expanded by more characters and the diameter sign (see User's Manual for Cycle Programming).

New fixed cycle 275 trochoidal milling (see User’s Manual for Cycle Programming)

New fixed cycle 233 ENGRAVING (see User’s Manual for Cycle Programming)

In the drilling cycles 200, 203 and 205 the parameter Q395 BEZUG DEPTH REFERENCE was introduced in order to evaluate the T ANGLE (see User's Manual for Cycle Programming).

The probing cycle 4 MEASURING IN 3-D was introduced (see User's Manual for Cycle Programming).

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TNC model, software and features

Changed functions 34059x-04

The turning tool table was expanded by the column NAME ("Tool data", page 475).

Now up to 4 functions are allowed in an NC block ("Fundamentals", page 354).

New soft keys for value transfer have been introduced in the pocket calculator ("Operation", page 138).

The distance-to-go display can now also be displayed in the input system ("Position Display Types", page 598).

Cycle 241 SINGLE-LIP DEEP HOLE DRILLING was expanded by several input parameters (see User's Manual for Cycle Programming).

Cycle 404 was expanded by the parameter Q305 NUMBER IN TABLE (see User's Manual for Cycle Programming).

In the thread milling cycles 26x an approaching feed rate was introduced (see User's Manual for Cycle Programming).

In Cycle 205 Universal Pecking you can now use parameter Q208 to define a feed rate for retraction (see User's Manual for Cycle Programming).

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Fundamentals

TNC model, software and features

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Contents
1	First Steps with the TNC 640.......................................................................................................	49
2	Introduction.....................................................................................................................................	69
3	Programming: Fundamentals, file management.........................................................................	89
4	Programming: Programming aids..............................................................................................	133
5	Programming: Tools.....................................................................................................................	161
6	Programming: Programming contours......................................................................................	197
7	Programming: Data transfer from DXF files or plain-language contours...............................	249
8	Programming: Subprograms and program section repeats....................................................	267
9	Programming: Q Parameters.......................................................................................................	283
10	Programming: Miscellaneous functions.....................................................................................	353
11	Programming: Special functions.................................................................................................	373
12	Programming: Multiple Axis Machining....................................................................................	417
13	Programming: Pallet editor.........................................................................................................	461
14	Programming: Turning Operations.............................................................................................	467
15	Manual operation and setup.......................................................................................................	493
16	Positioning with Manual Data Input..........................................................................................	555
17	Test run and program run...........................................................................................................	561
18	MOD functions..............................................................................................................................	589
19	Tables and overviews...................................................................................................................	619

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Contents

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1 First Steps with the TNC 640.......................................................................................................		49
1.1	Overview................................................................................................................................................	50
1.2	Machine switch-on................................................................................................................................	50
	Acknowledging the power interruption and moving to the reference points..........................................	50
1.3	Programming the first part..................................................................................................................	51
	Selecting the correct operating mode....................................................................................................	51
	The most important TNC keys................................................................................................................	51
	Creating a new program/file management.............................................................................................	52
	Defining a workpiece blank....................................................................................................................	53
	Program layout........................................................................................................................................	54
	Programming a simple contour...............................................................................................................	55
	Creating a cycle program........................................................................................................................	58
1.4	Graphically testing the first part.........................................................................................................	60
	Selecting the correct operating mode....................................................................................................	60
	Selecting the tool table for the test run.................................................................................................	60
	Choosing the program you want to test................................................................................................	61
	Selecting the screen layout and the view..............................................................................................	61
	Starting the test run................................................................................................................................	62
1.5	Setting up tools....................................................................................................................................	63
	Selecting the correct operating mode....................................................................................................	63
	Preparing and measuring tools...............................................................................................................	63
	The tool table TOOL.T............................................................................................................................	64
	The pocket table TOOL_P.TCH................................................................................................................	65
1.6	Workpiece setup....................................................................................................................................	66
	Selecting the correct operating mode....................................................................................................	66
	Clamping the workpiece.........................................................................................................................	66
	Datum setting with 3-D touch probe......................................................................................................	67
1.7	Running the first program...................................................................................................................	68
	Selecting the correct operating mode....................................................................................................	68
	Choosing the program you want to run.................................................................................................	68
	Start the program....................................................................................................................................	68

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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

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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.................................................................................................................	96
	Opening a new part program.................................................................................................................	98
	Programming tool movements in conversational...................................................................................	99
	Actual position capture..........................................................................................................................	101
	Editing a program..................................................................................................................................	102
	The TNC search function......................................................................................................................	105
3.3	File manager: Fundamentals..............................................................................................................	107
	Files.......................................................................................................................................................	107
	Displaying externally generated files on the TNC.................................................................................	109
	Data Backup..........................................................................................................................................	109

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Contents

3.4 Working with the file manager.........................................................................................................	110
Directories.............................................................................................................................................	110
Paths......................................................................................................................................................	110
Overview: Functions of the file manager.............................................................................................	111
Calling the file manager........................................................................................................................	112
Selecting drives, directories and files...................................................................................................	113
Creating a new directory......................................................................................................................	114
Creating a new file................................................................................................................................	114
Copying a single file..............................................................................................................................	114
Copying files into another directory......................................................................................................	115
Copying a table.....................................................................................................................................	116
Copying a directory...............................................................................................................................	116
Choosing one of the last files selected................................................................................................	117
Deleting a file........................................................................................................................................	118
Deleting a directory...............................................................................................................................	118
Tagging files..........................................................................................................................................	119
Renaming a file.....................................................................................................................................	120
Sorting files...........................................................................................................................................	120
Additional functions...............................................................................................................................	121
Additional tools for management of external file types........................................................................	122
Data transfer to/from an external data medium...................................................................................	127
The TNC in a network..........................................................................................................................	129
USB devices on the TNC......................................................................................................................	130

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4 Programming: Programming aids..............................................................................................		133
4.1	Adding comments...............................................................................................................................	134
	Application.............................................................................................................................................	134
	Entering comments during programming.............................................................................................	134
	Inserting comments after program entry.............................................................................................	134
	Entering a comment in a separate block..............................................................................................	134
	Functions for editing of the comment..................................................................................................	135
4.2	Display of NC Programs.....................................................................................................................	136
	Syntax highlighting................................................................................................................................	136
	Scrollbar.................................................................................................................................................	136
4.3	Structuring programs..........................................................................................................................	137
	Definition and applications....................................................................................................................	137
	Displaying the program structure window / Changing the active window............................................	137
	Inserting a structuring block in the (left) program window...................................................................	137
	Selecting blocks in the program structure window..............................................................................	137
4.4	Calculator.............................................................................................................................................	138
	Operation...............................................................................................................................................	138
4.5	Cutting data calculator.......................................................................................................................	141
	Application.............................................................................................................................................	141
4.6	Programming graphics.......................................................................................................................	144
	Generate/do not generate graphics during programming.....................................................................	144
	Generating a graphic for an existing program......................................................................................	144
	Block number display ON/OFF..............................................................................................................	145
	Erasing the graphic...............................................................................................................................	145
	Showing grid lines.................................................................................................................................	145
	Magnification or reduction of details....................................................................................................	146

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Contents

4.7 Error messages....................................................................................................................................	147
Display of errors....................................................................................................................................	147
Open the error window........................................................................................................................	147
Closing the error window.....................................................................................................................	147
Detailed error messages.......................................................................................................................	148
INTERNAL INFO soft key......................................................................................................................	148
Clearing errors.......................................................................................................................................	149
Error log.................................................................................................................................................	149
Keystroke log.........................................................................................................................................	150
Informational texts................................................................................................................................	151
Saving service files...............................................................................................................................	151
Calling the TNCguide help system.......................................................................................................	152
4.8 TNCguide context-sensitive help system.........................................................................................	153
Application.............................................................................................................................................	153
Working with the TNCguide.................................................................................................................	154
Downloading current help files.............................................................................................................	158

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5 Programming: Tools.....................................................................................................................		161
5.1	Entering tool-related data..................................................................................................................	162
	Feed rate F............................................................................................................................................	162
	Spindle speed S....................................................................................................................................	163
5.2	Tool data...............................................................................................................................................	164
	Requirements for tool compensation...................................................................................................	164
	Tool number, tool name........................................................................................................................	164
	Tool length L.........................................................................................................................................	164
	Tool radius R.........................................................................................................................................	164
	Delta values for lengths and radii.........................................................................................................	165
	Entering tool data into the program.....................................................................................................	165
	Enter tool data into the table...............................................................................................................	166
	Importing tool tables.............................................................................................................................	175
	Pocket table for tool changer................................................................................................................	176
	Call tool data.........................................................................................................................................	179
	Tool change...........................................................................................................................................	181
	Tool usage test......................................................................................................................................	184
	Tool management (software option).....................................................................................................	186
5.3	Tool compensation..............................................................................................................................	193
	Introduction...........................................................................................................................................	193
	Tool length compensation.....................................................................................................................	193
	Tool radius compensation.....................................................................................................................	194

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Contents

6 Programming: Programming contours......................................................................................		197
6.1	Tool movements..................................................................................................................................	198
	Path functions.......................................................................................................................................	198
	FK free contour programming..............................................................................................................	198
	Miscellaneous functions M...................................................................................................................	198
	Subprograms and program section repeats.........................................................................................	199
	Programming with Q parameters.........................................................................................................	199
6.2 Fundamentals of Path Functions.......................................................................................................		200
	Programming tool movements for workpiece machining.....................................................................	200
6.3 Approaching and departing a contour.............................................................................................		204
	Overview: Types of paths for contour approach and departure............................................................	204
	Important positions for approach and departure...................................................................................	205
	Approaching on a straight line with tangential connection: APPR LT...................................................	207
	Approaching on a straight line perpendicular to the first contour point: APPR LN...............................	207
	Approaching on a circular path with tangential connection: APPR CT..................................................	208
	Approaching on a circular path with tangential connection from a straight line to the contour:
	APPR LCT..............................................................................................................................................	209
	Departing in a straight line with tangential connection: DEP LT..........................................................	210
	Departing in a straight line perpendicular to the last contour point: DEP LN.......................................	210
	Departing on a circular path with tangential connection: DEP CT........................................................	211
	Departing on a circular arc tangentially connecting the contour and a straight line: DEP LCT..............	211
6.4	Path contours - Cartesian coordinates.............................................................................................	212
	Overview of path functions..................................................................................................................	212
	Straight line L........................................................................................................................................	213
	Inserting a chamfer between two straight lines...................................................................................	214
	Corner rounding RND...........................................................................................................................	215
	Circle center CC....................................................................................................................................	216
	Circular path C around circle center CC...............................................................................................	217
	CircleCR with defined radius................................................................................................................	218
	Circle CT with tangential connection....................................................................................................	220
	Example: Linear movements and chamfers with Cartesian coordinates..............................................	221
	Example: Circular movements with Cartesian coordinates..................................................................	222
	Example: Full circle with Cartesian coordinates...................................................................................	223

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6.5 Path contours – Polar coordinates....................................................................................................	224
Overview...............................................................................................................................................	224
Zero point for polar coordinates: pole CC............................................................................................	225
Straight line LP......................................................................................................................................	225
Circular path CP around pole CC..........................................................................................................	226
Circle CTP with tangential connection..................................................................................................	226
Helix.......................................................................................................................................................	227
Example: Linear movement with polar coordinates.............................................................................	229
Example: Helix......................................................................................................................................	230
6.6 Path contours – FK free contour programming...............................................................................	231
Fundamentals........................................................................................................................................	231
FK programming graphics.....................................................................................................................	233
Initiating the FK dialog..........................................................................................................................	235
Pole for FK programming......................................................................................................................	235
Free straight line programming.............................................................................................................	236
Free circular path programming............................................................................................................	237
Input options.........................................................................................................................................	238
Auxiliary points......................................................................................................................................	241
Relative data..........................................................................................................................................	242
Example: FK programming 1................................................................................................................	244
Example: FK programming 2................................................................................................................	245
Example: FK programming 3................................................................................................................	246

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Contents

7 Programming: Data transfer from DXF files or plain-language contours...............................	249
7.1 Processing DXF Files (Software Option)..........................................................................................	250
Application.............................................................................................................................................	250
Opening a DXF file...............................................................................................................................	251
Working with the DXF converter..........................................................................................................	251
Basic settings........................................................................................................................................	252
Setting layers.........................................................................................................................................	254
Defining the datum...............................................................................................................................	255
Selecting and saving a contour.............................................................................................................	257
Selecting and saving machining positions............................................................................................	261

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8 Programming: Subprograms and program section repeats....................................................		267
8.1	Labeling Subprograms and Program Section Repeats...................................................................	268
	Label......................................................................................................................................................	268
8.2	Subprograms.......................................................................................................................................	269
	Operating sequence..............................................................................................................................	269
	Programming notes...............................................................................................................................	269
	Programming a subprogram.................................................................................................................	269
	Calling a subprogram............................................................................................................................	270
8.3	Program-section repeats....................................................................................................................	271
	Label LBL..............................................................................................................................................	271
	Operating sequence..............................................................................................................................	271
	Programming notes...............................................................................................................................	271
	Programming a program section repeat...............................................................................................	271
	Calling a program section repeat..........................................................................................................	272
8.4	Any desired program as subprogram...............................................................................................	273
	Operating sequence..............................................................................................................................	273
	Programming notes...............................................................................................................................	273
	Calling any program as a subprogram..................................................................................................	274
8.5	Nesting.................................................................................................................................................	275
	Types of nesting....................................................................................................................................	275
	Nesting depth........................................................................................................................................	275
	Subprogram within a subprogram........................................................................................................	276
	Repeating program section repeats......................................................................................................	277
	Repeating a subprogram.......................................................................................................................	278
8.6	Programming examples.....................................................................................................................	279
	Example: Milling a contour in several infeeds......................................................................................	279
	Example: Groups of holes....................................................................................................................	280
	Example: Group of holes with several tools.........................................................................................	281

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Contents

9 Programming: Q Parameters.......................................................................................................		283
9.1	Principle and overview of functions.................................................................................................	284
	Programming notes...............................................................................................................................	285
	Calling Q parameter functions..............................................................................................................	286
9.2	Part families—Q parameters in place of numerical values.............................................................	287
	Application.............................................................................................................................................	287
9.3	Describing contours with mathematical functions.........................................................................	288
	Application.............................................................................................................................................	288
	Overview...............................................................................................................................................	288
	Programming fundamental operations..................................................................................................	289
9.4	Angle functions (trigonometry).........................................................................................................	290
	Definitions.............................................................................................................................................	290
	Programming trigonometric functions..................................................................................................	290
9.5	Calculation of circles...........................................................................................................................	291
	Application.............................................................................................................................................	291
9.6	If-then decisions with Q parameters................................................................................................	292
	Application.............................................................................................................................................	292
	Unconditional jumps..............................................................................................................................	292
	Programming if-then decisions.............................................................................................................	292
	Abbreviations used:...............................................................................................................................	293
9.7	Checking and changing Q parameters.............................................................................................	294
	Procedure..............................................................................................................................................	294
9.8	Additional functions............................................................................................................................	296
	Overview...............................................................................................................................................	296
	FN 14: ERROR: Displaying error messages.........................................................................................	297
	FN 16: F-PRINT: Output of formatted texts and Q parameter values....................................................	301
	FN 18: SYS-DATUM READ: Reading system data................................................................................	305
	FN 19: PLC: Transfer values to PLC.....................................................................................................	314
	FN 20: WAIT FOR: NC and PLC synchronization.................................................................................	314
	FN 29: PLC: Transfer values to the PLC...............................................................................................	316
	FN 37: EXPORT.....................................................................................................................................	316

30	TNC 640 | User's Manual
	HEIDENHAIN Conversational Programming | 3/2014