HEIDENHAIN TNC 620 User Manual

User’s Manual

HEIDENHAIN

Conversational

TNC 620

NC Software 340 560-02 340 561-02 340 564-02

English (en) 7/2009

Controls of the TNC

Keys on visual display unit

Key	Function
	Split screen layout

Toggle display between machining and programming modes

Soft keys for selecting functions on screen

Shift between soft-key rows

Machine operating modes

Key	Function
	Manual Operation

Electronic Handwheel

Positioning with Manual Data Input

Program Run, Single Block

Program Run, Full Sequence

Programming modes

Key Function

Programming and Editing

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 pocket 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
100		100
50	150	50	150
0	F %	0	S %

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

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

Circle with center

Circle with radius

Circular arc with tangential connection

Chamfering/Corner rounding

Special functions / smarT.NC

Key Function

Show special functions

Select the next tab in forms

Up/down one dialog box or button

Coordinate axes and numbers: Entering and editing

Key		Function
	. . .	Select coordinate axes or
		enter them into the 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

About this Manual

The symbols used in this manual are described below.

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

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 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.

Do you desire any changes, or have you found any errors?

We are continuously striving to improve documentation for you. Please help us by sending your requests to the following e-mail address: [e-mail].

About this Manual

HEIDENHAIN TNC 620

5

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 620	340 560-02
TNC 620 E	340 561-02
TNC 620 Programming Station	340 564-02

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 a separate manual. Please contact HEIDENHAIN if you require a copy of this User’s Manual. ID: 679 295-xx

6

Software options

The TNC 620 features various software options that can be enabled by your machine tool builder. Each option is to be enabled separately and contains the following respective functions:

Hardware options

Additional axis for 4 axes and open-loop spindle

Additional axis for 5 axes and open-loop spindle

Software option 1 (option number #08)

Cylinder surface interpolation (Cycles 27, 28 and 29)

Feed rate in mm/min for rotary axes: M116

Tilting the machining plane (plane functions, Cycle 19 and 3-D ROT soft key in the Manual Operation mode)

Circle in 3 axes with tilted working plane

Software option 2 (option number #09)

Block processing time 1.5 ms instead of 6 ms

5-axis interpolation

3-D machining:

M128: Maintaining the position of the tool tip when positioning with swivel axes (TCPM)

M144: Compensating the machine’s kinematics configuration for ACTUAL/NOMINAL positions at end of block

Additional parameters for finishing/roughing and tolerance for rotary axes in Cycle 32 (G62)

LN blocks (3-D compensation)

Touch probe function (option number #17)

Touch-probe cycles

Compensation of tool misalignment in manual mode

Compensation of tool misalignment in automatic mode

Datum setting in manual mode

Datum setting in automatic mode

Automatic workpiece measurement

Automatic tool measurement

TNC Model, Software and Features

HEIDENHAIN TNC 620

7

TNC Model, Software and Features

Advanced programming features (option number #19)

FK free contour programming

Programming in HEIDENHAIN conversational format with graphic support for workpiece drawings not dimensioned for NC

Fixed cycles

Peck drilling, reaming, boring, counterboring, centering (Cycles 201 to 205, 208, 240, 241)

Milling of internal and external threads (Cycles 262 to 265, 267)

Finishing of rectangular and circular pockets and studs (Cycles 212 to 215, 251 to 257)

Clearing level and oblique surfaces (Cycles 230 to 232)

Straight slots and circular slots (Cycles 210, 211, 253, 254)

Linear and circular point patterns (Cycles 220, 221)

Contour train, contour pocket—also with contour-parallel machining (Cycles 20 to 25)

OEM cycles (special cycles developed by the machine tool builder) can be integrated

Advanced graphic features (option number #20)

Program verification graphics, program-run graphics

Plan view

Projection in three planes

3-D view

Software option 3 (option number #21)

Tool compensation

M120: Radius-compensated contour look-ahead for up to 99 blocks (look-ahead)

3-D machining

M118: Superimpose handwheel positioning during program run

Pallet management (option number #22)

Pallet management

HEIDENHAIN DNC (option number #18)

Communication with external PC applications over COM component

8

Display step (option number #23)

Input resolution and display step:

For linear axes to 0.01 µm

Angular axes to 0.00001°

Double speed (option number #49)

Double-speed control loops are used primarily for high-speed spindles as well as for linear motors and torque motors

Feature content level (upgrade functions)

Along with software options, significant further improvements of the TNC software are managed via the Feature Content Level (FCL) 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

UProgramming and Editing operating mode

UMOD function

ULICENSE INFO soft key

TNC Model, Software and Features

HEIDENHAIN TNC 620

9

New Functions of Software 340 56x-02

New Functions of Software 340 56x-02

The PLANE function for flexible definition of a tilted working plane was introduced (see “The PLANE Function: Tilting the Working Plane (Software Option 1)” on page325)

The context-sensitive help system TNCguide was introduced (see “Calling the TNCguide” on page128)

The FUNCTION PARAX function for defining the behavior of the parallel axes U, V and W was introduced (see “Working with the Parallel Axes U, V and W” on page317)

The conversational languages Estonian, Korean, Latvian, Norwegian, Romanian, Slovak and Turkish were introduced (see “Parameter list” on page452)

Individual characters can now be deleted by using the backspace key (see “Coordinate axes and numbers: Entering and editing” on page3)

The PATTERN DEF function for defining point patterns was introduced (see User's Manual for Cycles)

The SEL PATTERN function makes it possible to select point tables (see User's Manual for Cycles)

With the CYCL CALL PAT function, cycles can now be run in connection with point tables (see User's Manual for Cycles)

The DECLARE CONTOUR function can now also define the depth of the contour (see User's Manual for Cycles)

New Cycle 241 for Single-Fluted Deep-Hole Drilling was introduced (see User’s Manual for Cycles)

The new fixed cycles 251 to 257 were introduced for milling pockets, studs and slots (see User's Manual for Cycles)

Touch probe cycle 416 (Datum on Circle Center) was expanded by parameter Q320 (safety clearance) (see User's Manual for Cycles)

Touch probe cycles 412, 413, 421 and 422: Additional parameter Q365 (type of traverse) (see User's Manual for Cycles)

Touch probe cycle 425 (Measure Slot) was expanded by parameters Q301 (Move to clearance height) and Q320 (setup clearance) (see User's Manual for Cycles)

Touch probe cycles 408 to 419: The TNC now also writes to line 0 of the preset table when the display value is set (see User's Manual for Cycles)

In the machine operating modes Program Run, Full Sequence and Program Run, Single Block, datum tables can now also be selected (STATUS M)

The definition of feed rates in fixed cycles can now also include FU and FZ values (see User's Manual for Cycles)

10

Changed Functions of Software 340 56x-02

In Cycle 22 you can now define a tool name also for the coarse roughing tool (see User's Manual Cycles)

The additional status display has been revised. The following improvements have been introduced (see “Additional status displays” on page67):

A new overview page with the most important status displays were introduced

The tolerance values set in Cycle 32 are displayed

The pocket-, studand slot-milling cycles 210 to 214 were removed from the standard soft-key row (CYCL DEF > POCKETS/STUDS/SLOTS). For reasons of compatibility, the cycles will still be available, and can be selected via the GOTO key

With Cycle 25 Contour Train, closed contours can now also be programmed

Tool changes are now also possible during mid-program startup

Language-dependent tables can now be output with FN16 F-Print

The soft-key structure of the SPEC FCT function was changed and adapted to the iTNC 530

Changed Functions of Software 340 56x-02

HEIDENHAIN TNC 620

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Changed Functions of Software 340 56x-02

12

Table of Contents

	First	Steps with the TNC 620	1
			2
	Introduction
	Programming: Fundamentals, File		3
	Management
	Programming: Programming Aids		4
	Programming: Tools		5
			6
	Programming: Programming Contours
	Programming: Subprograms and		7
	Program Section Repeats
	Programming: Q Parameters		8
	Programming: Miscellaneous Functions		9
			10
	Programming: Special Functions
			11
	Programming: Multiple Axis Machining
			12
	Manual Operation and Setup
			13
	Positioning with Manual Data Input
			14
	Test Run and Program Run
			15
	MOD Functions
			16
	Tables and Overviews

HEIDENHAIN TNC 620	13

1 First Steps with the TNC 620 ..... 35

1.1	Overview .....	36
1.2	Machine Switch-On		..... 37
	Acknowledge the power interruption and move to the reference points .....						37
1.3	Programming the First Part .....			38
	Select the correct operating mode				..... 38
	The most important TNC keys .....				38
	Create a new program/file management .....					39
	Define a workpiece blank .....			40
	Program layout .....		41

Program a simple contour .....				42
Create a cycle program .....			45
1.4 Graphically Testing the First Part (Advanced Graphic Features Software Option) .....							48
Select the correct operating mode .....						48
Select the tool table for the test run .....						48
Choose the program you want to test .....						49
Select the screen layout and the view .....						49
Start the program test .....			50
1.5 Tool Setup .....	51
Select the correct operating mode .....						51
Prepare and measure tools .....					51
The tool table TOOL.T .....			51
The pocket table TOOL_P.TCH					..... 52
1.6 Workpiece Setup .....		53
Select the correct operating mode .....						53
Clamp the workpiece .....			53
Workpiece alignment with 3-D touch probe (software option: Touch probe function) .....								54
Datum setting with 3-D touch probe (software option: Touch probe function) .....							55
1.7 Running the First Program .....			56
Select the correct operating mode .....						56
Choose the program you want to run .....						56
Start the program		..... 56

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.....2 Introduction	57
2.1 The TNC 620	..... 58
Programming: HEIDENHAIN conversational and ISO formats								..... 58
Compatibility .....		58
2.2 Visual Display Unit and Keyboard .....					59
Visual display unit .....			59
Sets the screen layout .....				60
Operating panel		.....	61
2.3 Operating Modes .....		62
Manual Operation and Electronic Handwheel .....							62
Positioning with Manual Data Input .....						62
Programming and Editing .....				63
Test Run .....	63
Program Run, Full Sequence and Program Run, Single Block .....								64
2.4 Status Displays .....		65
“General” status display .....				65
Additional status displays .....				67
2.5 Accessories: HEIDENHAIN 3-D Touch Probes and Electronic Handwheels .....									73
3-D touch probes (Touch Probe Function software option) .....								73
HR electronic handwheels				..... 74

16

.....3 Programming: Fundamentals, File Management											75
3.1 Fundamentals .....		76
Position encoders and reference marks							.....	76
Reference system .....				76
Reference system on milling machines							.....	77
Designation of the axes on milling machines .....									77
Polar coordinates .....			78
Absolute and incremental workpiece positions .....										79
Setting the datum .....				80
3.2 Creating and Writing Programs .....						81
Organization of an NC program in HEIDENHAIN Conversational .....												81
Define the blank: BLK FORM .....						81
Creating a new part program .....						82
Programming tool movements in conversational format .....											84
Actual position capture .....					86
Editing a program .....				87
The TNC search function .....					91
3.3 File Management: Fundamentals .....						93
Files .....	93
Data backup .....		94
3.4 Working with the File Manager .....						95
Directories .....		95
Paths .....	95
Overview: Functions of the file manager .....								96
Calling the file manager .....					97
Selecting drives, directories and files .....							98
Creating a new directory .....					100
Creating a new file .....				100
Copying a single file .....				101
Copying files into another directory .....							102
Copying a directory			.....	102
Choosing one of the last files selected .....								103
Deleting a file .....		103
Deleting a directory			.....	104
Tagging files .....		105
Renaming a file .....			106
File sorting .....		106
Additional functions			.....	107
Data transfer to or from an external data medium										..... 108
The TNC in a network				.....	110
USB devices on the TNC (FCL 2 function) .....								111

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.....4 Programming: Programming Aids					113
4.1 Screen keyboard .....		114
Enter the text with the screen keyboard						..... 114
4.2 Adding Comments		.....	115
Function .....	115
Entering a comment in a separate block .....						115
Functions for editing of the comment .....						116
4.3 Structuring Programs .....			117
Definition and applications .....				117
Displaying the program structure window / Changing the active window .....										117
Inserting a structuring block in the (left) program window .....									117
Selecting blocks in the program structure window .....								117
4.4 Integrated Pocket Calculator .....				118
Operation .....	118
4.5 Programming Graphics			..... 120
Generating / Not generating graphics during programming: .....									120
Generating a graphic for an existing program .....							120
Block number display ON/OFF .....					121
Erasing the graphic .....			121
Magnifying or reducing a detail .....					121
4.6 Error messages	.....	122
Display of errors .....			122
Open the error window. .....				122
Close the error window .....				122
Detailed error messages .....				123
INTERNAL INFO soft key .....				123
Clearing errors .....		124
Error log .....	124
Keystroke log .....		125
Informational texts .....			126
Saving service files .....			126
Calling the TNCguide help system .....					126
4.7 Context-Sensitive Help System				..... 127
Application .....		127
Working with the TNCguide				..... 128
Downloading current help files .....					132

18

5 Programming: Tools			..... 133
5.1 Entering Tool-Related Data .....				134
Feed rate F .....		134
Spindle speed S			..... 135
5.2 Tool Data .....	136
Requirements for tool compensation						..... 136
Tool numbers and tool names					..... 136
Tool length L .....			136
Tool radius R .....			136
Delta values for lengths and radii .....						137
Entering tool data into the program .....						137
Entering tool data in the table					..... 138
Pocket table for tool changer .....					144
Calling tool data			..... 147
5.3 Tool Compensation			..... 148
Introduction .....			148
Tool length compensation .....					148
Tool radius compensation .....					149

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6 Programming: Programming Contours						.....	153
6.1 Tool Movements	.....	154
Path functions .....		154
FK free contour programming (Advanced programming features software option) .....													154
Miscellaneous functions M .....				154
Subprograms and program section repeats .....								154
Programming with Q parameters .....					155
6.2 Fundamentals of Path Functions .....				156
Programming tool movements for workpiece machining .....									156
6.3 Contour Approach and Departure .....				160
Overview: Types of paths for contour approach and departure .....										160
Important positions for approach and departure								..... 161
Approaching on a straight line with tangential connection: APPR LT .....											163
Approaching on a straight line perpendicular to the first contour point: APPR LN ..... 163
Approaching on a circular path with tangential connection: APPR CT .....											164
Approaching on a circular arc with tangential connection from a straight line to the contour: APPR LCT .....															165
Departing on a straight line with tangential connection: DEP LT .....										166
Departing on a straight line perpendicular to the last contour point: DEP LN .....												166
Departure on a circular path with tangential connection: DEP CT .....										167
Departing on a circular arc tangentially connecting the contour and a straight line: DEP LCT .....														167
6.4 Path Contours—Cartesian Coordinates .....						168
Overview of path functions .....				168
Straight line L	.....	169
Inserting a chamfer between two straight lines								..... 170
Corner rounding RND .....			171
Circle center CCI .....		172
Circular path C around circle center CC .....						173
Circular path CR with defined radius					.....	174
Circular path CT with tangential connection .....								176
6.5 Path Contours—Polar Coordinates				..... 181
Overview .....	181
Zero point for polar coordinates: pole CC .....							182
Straight line LP .....		182
Circular path CP around pole CC .....					183
Circular path CTP with tangential connection							.....	184
Helical interpolation .....			185

20

6.6 Path Contours – FK Free Contour Programming (Advanced Programming Features Software Option) .....					189
Fundamentals .....		189
Graphics during FK programming .....				191
Initiating the FK dialog .....			192
Pole for FK programming .....			193
Free programming of straight lines .....				193
Free programming of circular arcs .....				194
Input possibilities		..... 195
Auxiliary points .....		199
Relative data .....	200

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7 Programming: Subprograms and Program Section Repeats .....

207

7.1	Labeling Subprograms and Program Section Repeats .....								208
	Labels	..... 208
7.2	Subprograms .....		209
	Operating sequence .....				209
	Programming notes .....				209
	Programming a subprogram .....					209
	Calling a subprogram			.....	209
7.3	Program Section Repeats .....				210
	Label LBL .....		210
	Operating sequence .....				210
	Programming notes .....				210
	Programming a program section repeat							..... 210
	Calling a program section repeat .....						210
7.4	Separate Program as Subprogram .....						211
	Operating sequence .....				211
	Programming notes .....				211
	Calling any program as a subprogram .....							212
7.5	Nesting .....	213
	Types of nesting .....			213
	Nesting depth		..... 213
	Subprogram within a subprogram .....						214
	Repeating program section repeats .....							215
	Repeating a subprogram .....					216
7.6	Programming Examples			.....	217

22

.....8 Programming: Q Parameters						223
8.1	Principle and Overview .....			224
	Programming notes .....			225
	Calling Q-parameter functions				.....	226
8.2	Part Families—Q Parameters in Place of Numerical Values .....										227
	Function .....	227
8.3	Describing Contours through Mathematical Operations									.....	228
	Application .....		228
	Overview .....		228
	Programming fundamental operations						..... 229
8.4	Trigonometric Functions			..... 230
	Definitions .....		230
	Programming trigonometric functions						..... 231
8.5	Circle Calculations		..... 232
	Application .....		232
8.6	If-Then Decisions with Q Parameters .....						233
	Application .....		233
	Unconditional jumps .....			233
	Programming If-Then decisions .....					233
	Abbreviations used: .....			234
8.7	Checking and Changing Q Parameters .....						235
	Procedure .....		235
8.8	Additional Functions .....			236
	Overview .....		236
	FN 14: ERROR: Displaying error messages							.....	237
	FN 16: F-PRINT: Formatted output of text and Q parameter values .....											242
	FN 18: SYS-DATUM READ: Read system data								..... 246
	FN 19: PLC: Transfer values to the PLC .....							254
	FN 20: WAIT FOR: NC and PLC synchronization .....									255
	FN29: PLC: Transferring values to the PLC .....								256
	FN37:EXPORT		..... 257
8.9	Accessing Tables with SQL Commands .....						258
	Introduction .....		258
	A Transaction		259
	Programming SQL commands				.....	261
	Overview of the soft keys .....				261
	SQL BIND .....		262
	SQL SELECT		263
	SQL FETCH .....		266
	SQL UPDATE		267
	SQL INSERT	.....	267
	SQL COMMIT .....		268
	SQL ROLLBACK .....			268

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8.10	Entering Formulas Directly			.....	269
	Entering formulas .....		269
	Rules for formulas .....		271
	Programming example .....			272
8.11	String Parameters .....		273
	String processing functions .....					273
	Assigning string parameters .....					274
	Chain-linking string parameters					..... 275
	Converting a numerical value to a string parameter .....								276
	Copying a substring from a string parameter .....							277
	Converting a string parameter to a numerical value .....								278
	Checking a string parameter				.....	279
	Finding the length of a string parameter						..... 280
	Comparing alphabetic priority				.....	281
8.12 Preassigned Q Parameters .....					282
	Values from the PLC: Q100 to Q107 .....						282
	Active tool radius: Q108 .....			282
	Tool axis: Q109 .....	283
	Spindle status: Q110		.....	283
	Coolant on/off: Q111		.....	283
	Overlap factor: Q112		.....	283

Unit of measurement for dimensions in the program: Q113 .....			284
Tool length: Q114 .....	284
Coordinates after probing during program run .....		284
Deviation between actual value and nominal value during automatic tool measurement with the TT 130 .....					285
Tilting the working plane with mathematical angles: rotary axis coordinates calculated by the TNC				..... 285
Measurement results from touch probe cycles (see also User’s Manual for Touch Probe Cycles) .....				286
8.13 Programming Examples	..... 288

24

.....9 Programming: Miscellaneous Functions				295
9.1 Entering Miscellaneous Functions M and STOP .....				296
Fundamentals .....		296
9.2 Miscellaneous Functions for Program Run Control, Spindle and Coolant								..... 297
Overview	..... 297
9.3 Miscellaneous Functions for Coordinate Data .....				298
Programming machine-referenced coordinates: M91/M92 .....							298
Moving to positions in a non-tilted coordinate system with a tilted working plane: M130 .....									300
9.4 Miscellaneous Functions for Contouring Behavior				..... 301
Machining small contour steps: M97 .....			301
Machining open contours corners: M98 .....			303
Feed rate factor for plunging movements: M103 .....					304
Feed rate in millimeters per spindle revolution: M136 .....						305
Feed rate for circular arcs: M109/M110/M111				..... 305
Calculating the radius-compensated path in advance (LOOK AHEAD): M120 (Miscellaneous functions software
option) .....	306
Superimposing handwheel positioning during program run: M118 (Miscellaneous functions software
option) .....	308
Retraction from the contour in the tool-axis direction: M140 .....							309
Suppressing touch probe monitoring: M141 .....				310
Automatically retract tool from the contour at an NC stop: M148 .....								311

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.....10 Programming: Special Functions		313
10.1 Overview of Special Functions	..... 314
Main menu for SPEC FCT special functions .....			314
Program defaults menu ..... 315
Functions for contour and point machining menu ..... 315
Menu of various conversational functions .....			316
10.2 Working with the Parallel Axes U, V and W .....			317
Overview ..... 317
FUNCTION PARAXCOMP DISPLAY ..... 318
FUNCTION PARAXCOMP MOVE .....		319
FUNCTION PARAXCOMP OFF .....		320
FUNCTION PARAXMODE .....	321
FUNCTION PARAXMODE OFF .....		322

26

11 Programming: Multiple Axis Machining						..... 323
11.1 Functions for Multiple Axis Machining					..... 324
11.2 The PLANE Function: Tilting the Working Plane (Software Option 1) .....								325
Introduction	.....	325
Define the PLANE function .....				327
Position display		..... 327
Reset the PLANE function			.....	328
Defining the machining plane with space angles: PLANE SPATIAL .....								329
Defining the machining plane with projection angles: PROJECTED PLANE									.....	331
Defining the machining plane with Euler angles: EULER PLANE .....								333
Defining the machining plane with two vectors: VECTOR PLANE .....								335
Defining the machining plane via three points: POINTS PLANE .....								337
Defining the machining plane with a single, incremental space angle: PLANE RELATIVE .....											339
Tilting the working plane through axis angle: PLANE AXIAL (FCL 3 function) .....										340
Specifying the positioning behavior of the PLANE function							..... 342
11.3 Inclined-Tool Machining in a Tilted Plane (Software Option 2)							..... 346
Function .....	346
Inclined-tool machining via incremental traverse of a rotary axis .....								346
Inclined-tool machining via normal vectors .....						347
11.4 Miscellaneous Functions for Rotary Axes .....						348
Feed rate in mm/min on rotary axes A, B, C: M116 (software option 1) .....									348
Shorter-path traverse of rotary axes: M126 .....						349
Reducing display of a rotary axis to a value less than 360°: M94 .....								350
Maintaining the position of the tool tip when positioning with tilted axes (TCPM): M128 (software
option 2) .....	350
11.5 Three-Dimensional Tool Compensation (Software Option 2) .....							353
Introduction .....		353
Definition of a normalized vector .....					354
Permissible tool forms .....			355
Using other tools: Delta values				..... 355
3-D compensation without tool orientation .....						356
Face milling: 3-D compensation with and without tool orientation .....								356
Peripheral milling: 3-D radius compensation with workpiece orientation .....									358

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12 Manual Operation and Setup					.....	361
12.1 Switch-On, Switch-Off .....				362
Switch-on .....		362
Switch-off .....		364
12.2 Moving the Machine Axes				.....	365
Note .....	365
To traverse with the machine axis direction buttons:									..... 365
Incremental jog positioning .....						366
Traversing with the HR 410 electronic handwheel .....									367
12.3 Spindle Speed S, Feed Rate F and Miscellaneous Functions M .....										368
Function	.....	368
Entering values .....			368
Changing the spindle speed and feed rate .....								369
12.4 Datum Setting without a 3-D Touch Probe							.....	370
Note .....	370
Preparation .....		370
Workpiece presetting with axis keys .....							371
Datum management with the preset table .....								372
12.5 Using 3-D Touch Probes (Touch Probe Function Software Option) .....										378
Overview .....		378
Selecting probe cycles .....				379
Writing the measured values from touch probe cycles in datum tables .....												380
Writing the measured values from touch probe cycles in the preset table												..... 381
12.6 Calibrating 3-D Touch Probes (Touch Probe Function Software Option) .....											382
Introduction .....		382
Calibrating the effective length .....						382
Calibrating the effective radius and compensating center misalignment .....												383
Displaying calibration values					.....	384
12.7 Compensating Workpiece Misalignment with 3-D Touch Probe (Touch Probe Function Software Option) .....													385
Introduction .....		385
Measuring the basic rotation					.....	385
Saving the basic rotation in the preset table .....								386
Displaying a basic rotation .....					386
Canceling a basic rotation .....					386

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12.8 Datum Setting with 3-D Touch Probe (Touch Probe Function Software Option) .....							387
Overview .....	387
Datum setting in any axis			..... 387
Corner as datum ..... 388
Circle center as datum .....			389
Measuring Workpieces with a 3-D Touch Probe					..... 390
Using the touch probe functions with mechanical probes or dial gauges .....						393
12.9 Tilting the Working Plane (Software Option 1) .....					394
Application, function .....		394
Traversing the reference points in tilted axes .....					396
Position display in a tilted system .....				396
Limitations on working with the tilting function					..... 396
Activating manual tilting		.....	397

HEIDENHAIN TNC 620

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13 Positioning with Manual Data Input .....	399
13.1 Programming and Executing Simple Machining Operations ..... 400
Positioning with Manual Data Input (MDI)	..... 400
Protecting and erasing programs in $MDI .....	403

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