heidenhain TNC 320 User Manual

User’s Manual
HEIDENHAIN
Conversational Format

TNC 320

NC Software
340 551-03

English (en)
7/2008

Controls on the visual display unit

Split screen layout
Switch between machining or

programming modes
Soft keys for selecting functions on

screen
Shift between soft-key rows

Typewriter keyboard for entering letters and symbols

File names
Comments
DIN/ISO
programs

Machine operating modes

Manual Operation

Electronic Handwheel

Positioning with Manual Data Input

Program Run, Single Block

Program Run, Full Sequence

Programming modes

Programming and Editing

Test Run

Program/file management, TNC functions

Select or delete programs and files
External data transfer

Define program call, select datum and point tables

Select MOD functions

Display help text for NC error messages

Display all current error messages

Show pocket calculator

Moving the cursor, going directly to blocks, cycles and
parameter functions

Go directly to blocks, cycles and parameter functions

Move highlight

Override control knobs for feed rate/spindle speed

100

0

1

S %

50

50

100

0

1

F %

50

50

Programming path movements

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

Tool functions

Enter and call tool length and radius

Cycles, subprograms and program section repeats

Define and call cycles
Enter and call labels for subprogramming and

program section repeats

Program stop in a program

Define touch probe cycles

Coordinate axes and numbers: Entering and editing

. . .

. . .

Decimal point / Reverse algebraic sign
Polar coordinate input/

Select coordinate axes or
enter them into the program

Numbers

Incremental dimensions

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

Deleting individual characters

Special functions / smarT.NC

Show special functions

No function

Up/down one dialog box or button

HEIDENHAIN TNC 320 3

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 320 340 551-03

TNC 320 programming station 340 554-03

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:

 Probing function for the 3-D touch probe
 Rigid tapping
 Returning to the contour after an interruption

In addition, the TNC 320 also has options that can be enabled by your
machine tool builder.

Hardware options

Additional axis for 4 axes and open-loop spindle

Additional axis for 5 axes and open-loop spindle

Software option 1

Cylinder surface interpolation (Cycles 27, 28 and 29)

Tilting the machining plane (Cycle 19 and 3-D ROT soft key in the
manual operating mode)

Please contact your machine tool builder to become familiar with the
features of your machine.

Many machine manufacturers, as well as HEIDENHAIN, offer
programming courses for the TNCs. We recommend these courses as
an effective way of improving your programming skill and sharing
information and ideas with other TNC users.

Touch Probe Cycles User’s Manual:

All of the touch probe functions are described in a separate
manual. Please contact HEIDENHAIN if you need a copy of
this User’s Manual. ID: 661 873-10

HEIDENHAIN TNC 320 5

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.

6

New Functions with 340 55x-03

 The TNC now also supports datum management with the preset

table (see “Datum management with the preset table,” page 54)

 The TNC now also supports the tilting functions on machine tools

with swivel heads and/or tilting tables (see “Tilting the Working
Plane (Software Option 1),” page 60 and see “WORKING PLANE
(Cycle 19, software option 1),” page 346)

 Cycle 240 Centering added (See “CENTERING (Cycle 240)” on page

215)

 Cycle 208 Helical Finish Milling: The type of milling (climb or up-cut)

can now be selected (See “BORE MILLING (Cycle 208)” on page

231)

 Cycle 209 Tapping with Chip Breaking: Fast retraction added (See

“TAPPING WITH CHIP BREAKING (Cycle 209)” on page 237)

 Touch Probe Cycles 400 to 405 for automatic measurement and

compensation of workpiece misalignment added (see Touch Probe
Cycles User’s Manual)

 Touch Probe Cycles 408 to 419 for automatic datum setting added

(see Touch Probe Cycles User’s Manual)

 Touch Probe Cycles 420 to 431 for automatic workpiece

measurement added (see Touch Probe Cycles User’s Manual)

 Touch Probe Cycles 480 (30) to 483 (33) for automatic tool

measurement added (see Touch Probe Cycles User’s Manual)

 Cycle 19 Working Plane and 3-D ROT (See “Tilting the Working

Plane (Software Option 1)” on page 60)

 Backspace dialog key (See page 32)

HEIDENHAIN TNC 320 7

Contents

Introduction

1

Manual Operation and Setup

Positioning with Manual Data Input

Programming: Fundamentals of File
Management, Programming Aids

Programming: Tools

Programming: Programming Contours

Programming: Miscellaneous Functions

Programming: Cycles

Programming: Subprograms and
Program Section Repeats

Programming: Q Parameters

Test Run and Program Run

MOD Functions

Technical Information

2
3
4
5
6
7
8
9

10

11
12
13

HEIDENHAIN TNC 320 9

1 Introduction ..... 29

1.1 The TNC 320 ..... 30

Programming: HEIDENHAIN conversational format ..... 30

Compatibility ..... 30

1.2 Visual Display Unit and Keyboard ..... 31

Visual display unit ..... 31

Sets the screen layout ..... 32

Operating panel ..... 32

1.3 Operating Modes ..... 33

Manual operation and electronic handwheel ..... 33

Positioning with Manual Data Input ..... 33

Programming and Editing ..... 34

Test Run ..... 34

Program Run, Full Sequence and Program Run, Single Block ..... 35

1.4 Status Displays ..... 36

“General” status display ..... 36

Additional status displays ..... 38

1.5 Accessories: HEIDENHAIN 3-D Touch Probes and Electronic Handwheels ..... 41

3-D touch probes ..... 41

TT 140 tool touch probe for tool measurement ..... 42

HR electronic handwheels ..... 42

HEIDENHAIN TNC 320 11

2 Manual Operation and Setup ..... 43

2.1 Switch-On, Switch-Off ..... 44

Switch-on ..... 44

Switch-off ..... 46

2.2 Moving the Machine Axes ..... 47

Note ..... 47

To traverse with the machine axis direction buttons ..... 47

Incremental jog positioning ..... 48

Traversing with the HR 410 electronic handwheel ..... 49

2.3 Spindle Speed S, Feed Rate F and Miscellaneous Functions M ..... 50

Function ..... 50

Entering values ..... 50

Changing the spindle speed and feed rate ..... 51

2.4 Datum Setting (Without a 3-D Touch Probe) ..... 52

Note ..... 52

Preparation ..... 52

Datum setting with axis keys ..... 53

Datum management with the preset table ..... 54

2.5 Tilting the Working Plane (Software Option 1) ..... 60

Application, function ..... 60

Traversing the reference points in tilted axes ..... 62

Position display in a tilted system ..... 62

Limitations on working with the tilting function ..... 62

Activating manual tilting ..... 63

12

3 Positioning with Manual Data Input (MDI) ..... 65

3.1 Programming and Executing Simple Machining Operations ..... 66

Positioning with Manual Data Input (MDI) ..... 66

Protecting and erasing programs in $MDI ..... 69

HEIDENHAIN TNC 320 13

4 Programming: Fundamentals of NC, File Management, Programming Aids ..... 71

4.1 Fundamentals ..... 72

Position encoders and reference marks ..... 72

Reference system ..... 72

Reference system on milling machines ..... 73

Designation of the axes on milling machines ..... 73

Polar coordinates ..... 74

Absolute and incremental workpiece positions ..... 75

Setting the datum ..... 76

4.2 File Management: Fundamentals ..... 77

Files ..... 77

Screen keypad ..... 79

Data backup ..... 79

4.3 Working with the File Manager ..... 80

Directories ..... 80

Paths ..... 80

Overview: Functions of the file manager ..... 81

Calling the file manager ..... 82

Selecting drives, directories and files ..... 83

Creating a new directory ..... 84

Copying a single file ..... 85

Copying a directory ..... 85

Choosing one of the last 10 files selected ..... 86

Deleting a file ..... 86

Deleting a directory ..... 86

Marking files ..... 87

Renaming a file ..... 88

File sorting ..... 88

Additional functions ..... 88

Data transfer to or from an external data medium ..... 89

Copying files into another directory ..... 91

The TNC in a network ..... 92

USB devices on the TNC ..... 93

4.4 Creating and Writing Programs ..... 94

Organization of an NC program in HEIDENHAIN conversational format ..... 94

Define the blank: BLK FORM ..... 94

Creating a new part program ..... 95

Programming tool movements in conversational format ..... 97

Actual position capture ..... 98

Editing a program ..... 99

The TNC search function ..... 103

14

4.5 Interactive Programming Graphics ..... 105

Generating / Not generating graphics during programming: ..... 105

Generating a graphic for an existing program ..... 105

Block number display ON/OFF ..... 106

Erasing the graphic ..... 106

Magnifying or reducing a detail ..... 106

4.6 Structuring Programs ..... 107

Definition and applications ..... 107

Displaying the program structure window / Changing the active window ..... 107

Inserting a structuring block in the (left) program window ..... 107

Selecting blocks in the program structure window ..... 107

4.7 Adding Comments ..... 108

Function ..... 108

Adding a comment line ..... 108

Functions for editing of the comment ..... 108

4.8 Integrated Pocket Calculator ..... 109

Operation ..... 109

4.9 Error messages ..... 111

Display of errors ..... 111

Open the error window ..... 111

Close the error window ..... 111

Detailed error messages ..... 112

INTERNAL INFO soft key ..... 112

Clearing errors ..... 113

Error log ..... 113

Keystroke log ..... 114

Informational texts ..... 115

Saving service files ..... 115

HEIDENHAIN TNC 320 15

5 Programming: Tools ..... 117

5.1 Entering Tool-Related Data ..... 118

Feed rate F ..... 118

Spindle speed S ..... 119

5.2 Tool Data ..... 120

Requirements for tool compensation ..... 120

Tool numbers and tool names ..... 120

Tool length L ..... 120

Tool radius R ..... 121

Delta values for lengths and radii ..... 121

Entering tool data into the program ..... 121

Entering tool data in the table ..... 122

Pocket table for tool changer ..... 128

Calling tool data ..... 131

5.3 Tool Compensation ..... 133

Introduction ..... 133

Tool length compensation ..... 133

Tool radius compensation ..... 134

16

6 Programming: Programming Contours ..... 137

6.1 Tool Movements ..... 138

Path functions ..... 138

FK free contour programming ..... 138

Miscellaneous functions M ..... 138

Subprograms and program section repeats ..... 138

Programming with Q parameters ..... 138

6.2 Fundamentals of Path Functions ..... 139

Programming tool movements for workpiece machining ..... 139

6.3 Contour Approach and Departure ..... 142

Overview: Types of paths for contour approach and departure ..... 142

Important positions for approach and departure ..... 143

Approaching on a straight line with tangential connection: APPR LT ..... 145

Approaching on a straight line perpendicular to the first contour point: APPR LN ..... 145

Approaching on a circular path with tangential connection: APPR CT ..... 146

Approaching on a circular arc with tangential connection from a straight line to the contour: APPR LCT ..... 147

Departing on a straight line with tangential connection: DEP LT ..... 148

Departing on a straight line perpendicular to the last contour point: DEP LN ..... 148

Departure on a circular path with tangential connection: DEP CT ..... 149

Departing on a circular arc tangentially connecting the contour and a straight line: DEP LCT ..... 149

6.4 Path Contours—Cartesian Coordinates ..... 150

Overview of path functions ..... 150

Straight line L ..... 151

Inserting a chamfer CHF between two straight lines ..... 152

Corner rounding RND ..... 153

Circle center CC ..... 154

Circular path C around circle center CC ..... 155

Circular path CR with defined radius ..... 156

Circular path CT with tangential connection ..... 158

6.5 Path Contours—Polar Coordinates ..... 163

Overview ..... 163

Polar coordinate origin: Pole CC ..... 164

Straight line LP ..... 164

Circular path CP around pole CC ..... 165

Circular path CTP with tangential connection ..... 165

Helical interpolation ..... 166

HEIDENHAIN TNC 320 17

6.6 Path Contours—FK Free Contour Programming ..... 170

Fundamentals ..... 170

Graphics during FK programming ..... 171

Initiating the FK dialog ..... 173

Pole for FK programming ..... 173

Free programming of straight lines ..... 174

Free programming of circular arcs ..... 174

Input possibilities ..... 175

Auxiliary points ..... 178

Relative data ..... 179

18

7 Programming: Miscellaneous Functions ..... 187

7.1 Entering Miscellaneous Functions M and STOP ..... 188

Fundamentals ..... 188

7.2 Miscellaneous Functions for Program Run Control, Spindle and Coolant ..... 190

Overview ..... 190

7.3 Miscellaneous Functions for Coordinate Data ..... 191

Programming machine-referenced coordinates: M91/M92 ..... 191

Moving to positions in a non-tilted coordinate system with a tilted working plane: M130 ..... 193

7.4 Miscellaneous Functions for Contouring Behavior ..... 194

Machining small contour steps: M97 ..... 194

Machining open contours: M98 ..... 196

Feed rate for circular arcs: M109/M110/M111 ..... 197

Calculating the radius-compensated path in advance (LOOK AHEAD): M120 ..... 198

Superimposing handwheel positioning during program run: M118 ..... 200

Retraction from the contour in the tool-axis direction: M140 ..... 201

Suppressing touch probe monitoring: M141 ..... 202

Delete basic rotation: M143 ..... 202

Automatically retract tool from the contour at an NC stop: M148 ..... 203

7.5 Miscellaneous Functions for Rotary Axes ..... 204

Feed rate in mm/min on rotary axes A, B, C: M116 (software option 1) ..... 204

Shorter-path traverse of rotary axes: M126 ..... 205

Reducing display of a rotary axis to a value less than 360°: M94 ..... 206

HEIDENHAIN TNC 320 19

8 Programming: Cycles ..... 207

8.1 Working with Cycles ..... 208

Machine-specific cycles ..... 208

Defining a cycle using soft keys ..... 209

Defining a cycle using the GOTO function ..... 209

Cycles Overview ..... 210

Calling cycles ..... 211

8.2 Cycles for Drilling, Tapping and Thread Milling ..... 213

Overview ..... 213

CENTERING (Cycle 240) ..... 215

DRILLING (Cycle 200) ..... 217

REAMING (Cycle 201) ..... 219

BORING (Cycle 202) ..... 221

UNIVERSAL DRILLING (Cycle 203) ..... 223

BACK BORING (Cycle 204) ..... 225

UNIVERSAL PECKING (Cycle 205) ..... 228

BORE MILLING (Cycle 208) ..... 231

TAPPING NEW with floating tap holder (Cycle 206) ..... 233

RIGID TAPPING without a floating tap holder NEW (Cycle 207) ..... 235

TAPPING WITH CHIP BREAKING (Cycle 209) ..... 237

Fundamentals of thread milling ..... 240

THREAD MILLING (Cycle 262) ..... 242

THREAD MILLING/COUNTERSINKING (Cycle 263) ..... 244

THREAD DRILLING/MILLING (Cycle 264) ..... 248

HELICAL THREAD DRILLING/MILLING (Cycle 265) ..... 252

OUTSIDE THREAD MILLING (Cycle 267) ..... 256

8.3 Cycles for Milling Pockets, Studs and Slots ..... 262

Overview ..... 262

POCKET MILLING (Cycle 4) ..... 263

POCKET FINISHING (Cycle 212) ..... 265

STUD FINISHING (Cycle 213) ..... 267

CIRCULAR POCKET (Cycle 5) ..... 269

CIRCULAR POCKET FINISHING (Cycle 214) ..... 271

CIRCULAR STUD FINISHING (Cycle 215) ..... 273

SLOT (oblong hole) with reciprocating plunge-cut (Cycle 210) ..... 275

CIRCULAR SLOT (oblong hole) with reciprocating plunge-cut (Cycle 211) ..... 278

8.4 Cycles for Machining Point Patterns ..... 284

Overview ..... 284

CIRCULAR PATTERN (Cycle 220) ..... 285

LINEAR PATTERN (Cycle 221) ..... 287

20

8.5 SL Cycles ..... 291

Fundamentals ..... 291

Overview of SL cycles ..... 293

CONTOUR GEOMETRY (Cycle 14) ..... 294

Overlapping contours ..... 294

CONTOUR DATA (Cycle 20) ..... 297

PILOT DRILLING (Cycle 21) ..... 298

ROUGH-OUT (Cycle 22) ..... 299

FLOOR FINISHING (Cycle 23) ..... 301

SIDE FINISHING (Cycle 24) ..... 302

CONTOUR TRAIN (Cycle 25) ..... 303

Program defaults for cylindrical surface machining cycles (software option 1!) ..... 305

CYLINDER SURFACE (Cycle 27, software option 1) ..... 306

CYLINDER SURFACE slot milling (Cycle 28, software option 1) ..... 308

CYLINDER SURFACE ridge milling (Cycle 29, software option 1) ..... 310

8.6 Cycles for Multipass Milling ..... 321

Overview ..... 321

MULTIPASS MILLING (Cycle 230) ..... 322

RULED SURFACE (Cycle 231) ..... 324

FACE MILLING (Cycle 232) ..... 327

8.7 Coordinate Transformation Cycles ..... 334

Overview ..... 334

Effect of coordinate transformations ..... 335

DATUM SHIFT (Cycle 7) ..... 336

DATUM SHIFT with datum tables (Cycle 7) ..... 337

DATUM SETTING (Cycle 247) ..... 340

MIRROR IMAGE (Cycle 8) ..... 341

ROTATION (Cycle 10) ..... 343

SCALING FACTOR (Cycle 11) ..... 344

AXIS-SPECIFIC SCALING (Cycle 26) ..... 345

WORKING PLANE (Cycle 19, software option 1) ..... 346

8.8 Special Cycles ..... 354

DWELL TIME (Cycle 9) ..... 354

PROGRAM CALL (Cycle 12) ..... 355

ORIENTED SPINDLE STOP (Cycle 13) ..... 356

TOLERANCE (Cycle 32) ..... 357

HEIDENHAIN TNC 320 21

9 Programming: Subprograms and Program Section Repeats ..... 361

9.1 Labeling Subprograms and Program Section Repeats ..... 362

Labels ..... 362

9.2 Subprograms ..... 363

Operating sequence ..... 363

Programming notes ..... 363

Programming a subprogram ..... 363

Calling a subprogram ..... 363

9.3 Program Section Repeats ..... 364

Label LBL ..... 364

Operating sequence ..... 364

Programming notes ..... 364

Programming a program section repeat ..... 364

Calling a program section repeat ..... 364

9.4 Separate Program as Subprogram ..... 365

Operating sequence ..... 365

Programming notes ..... 365

Calling any program as a subprogram ..... 365

9.5 Nesting ..... 366

Types of nesting ..... 366

Nesting depth ..... 366

Subprogram within a subprogram ..... 366

Repeating program section repeats ..... 368

Repeating a subprogram ..... 369

9.6 Programming Examples ..... 370

22

10 Programming: Q-Parameters ..... 377

10.1 Principle and Overview ..... 378

Programming notes ..... 379

Calling Q parameter functions ..... 379

10.2 Part Families—Q Parameters in Place of Numerical Values ..... 380

Example NC blocks ..... 380

Example ..... 380

10.3 Describing Contours through Mathematical Operations ..... 381

Function ..... 381

Overview ..... 381

Programming fundamental operations ..... 382

10.4 Trigonometric Functions ..... 383

Definitions ..... 383

Programming trigonometric functions ..... 384

10.5 Calculating Circles ..... 385

Function ..... 385

10.6 If-Then Decisions with Q Parameters ..... 386

Function ..... 386

Unconditional jumps ..... 386

Programming If-Then decisions ..... 386

Abbreviations used: ..... 387

10.7 Checking and Changing Q Parameters ..... 388

Procedure ..... 388

10.8 Additional Functions ..... 389

Overview ..... 389

FN14: ERROR: Displaying error messages ..... 390

FN 16: F-PRINT: Formatted output of text and Q parameter values ..... 394

FN18: SYS-DATUM READ Read system data ..... 399

FN19: PLC: Transferring values to the PLC ..... 407

FN20: WAIT FOR: NC and PLC synchronization ..... 408

FN29: PLC: Transferring values to the PLC ..... 410

FN37:EXPORT ..... 410

10.9 Accessing Tables with SQL Commands ..... 411

Introduction ..... 411

A Transaction ..... 412

Programming SQL commands ..... 414

Overview of the soft keys ..... 414

SQL BIND ..... 415

SQL SELECT ..... 416

SQL FETCH ..... 419

SQL UPDATE ..... 420

SQL INSERT ..... 420

SQL COMMIT ..... 421

SQL ROLLBACK ..... 421

HEIDENHAIN TNC 320 23

10.10 Entering Formulas Directly ..... 422

Entering formulas ..... 422

Rules for formulas ..... 424

Programming example ..... 425

10.11 String Parameters ..... 426

String processing functions ..... 426

Assigning string parameters ..... 427

Chain-linking string parameters ..... 427

Converting a numerical value to a string parameter ..... 428

Copying a substring from a string parameter ..... 429

Converting a string parameter to a numerical value ..... 430

Checking a string parameter ..... 431

Finding the length of a string parameter ..... 432

Comparing alphabetic priority ..... 433

10.12 Preassigned Q Parameters ..... 434

Values from the PLC: Q100 to Q107 ..... 434

Active tool radius: Q108 ..... 434

Tool axis: Q109 ..... 434

Spindle status: Q110 ..... 435

Coolant on/off: Q111 ..... 435

Overlap factor: Q112 ..... 435

Unit of measurement for dimensions in the program: Q113 ..... 435

Tool length: Q114 ..... 435

Coordinates after probing during program run ..... 436

Deviation between actual value and nominal value during automatic tool measurement with the TT 130 ..... 437

Tilting the working plane with mathematical angles: rotary axis coordinates calculated by the TNC ..... 437

Measurement results from touch probe cycles (see also User’s Manual for Touch Probe Cycles) ..... 438

10.13 Programming Examples ..... 440

24

11 Test Run and Program Run ..... 447

11.1 Graphics ..... 448

Function ..... 448

Overview of display modes ..... 449

Plan view ..... 449

Projection in 3 planes ..... 450

3-D view ..... 451

Magnifying details ..... 452

Repeating graphic simulation ..... 453

Measuring the machining time ..... 453

11.2 Showing the Workpiece in the Working Space ..... 454

Function ..... 454

11.3 Functions for Program Display ..... 455

Overview ..... 455

11.4 Test Run ..... 456

Function ..... 456

11.5 Program Run ..... 458

Function ..... 458

Run a part program ..... 459

Interrupting machining ..... 460

Moving the machine axes during an interruption ..... 460

Resuming program run after an interruption ..... 461

Mid-program startup (block scan) ..... 462

Returning to the contour ..... 463

11.6 Automatic Program Start ..... 464

Function ..... 464

11.7 Optional Block Skip ..... 465

Function ..... 465

Inserting the “/” character ..... 465

Erasing the “/” character ..... 465

11.8 Optional Program-Run Interruption ..... 466

Function ..... 466

HEIDENHAIN TNC 320 25

12 MOD Functions ..... 467

12.1 Selecting MOD Functions ..... 468

Selecting the MOD functions ..... 468

Changing the settings ..... 468

Exiting the MOD functions ..... 468

Overview of MOD functions ..... 469

12.2 Software Numbers ..... 470

Function ..... 470

12.3 Position Display Types ..... 471

Function ..... 471

12.4 Unit of Measurement ..... 472

Function ..... 472

12.5 Displaying Operating Times ..... 473

Function ..... 473

12.6 Entering Code Numbers ..... 474

Function ..... 474

12.7 Setting the Data Interfaces ..... 475

Serial interface on the TNC 320 ..... 475

Function ..... 475

Setting the RS-232 interface ..... 475

Setting the baud rate (baudRate) ..... 475

Set the protocol (protocol) ..... 475

Set the data bits (dataBits) ..... 476

Parity check (parity) ..... 476

Setting the stop bits (stopBits) ..... 476

Setting the handshake (flowControl) ..... 476

Settings for data transfer with the TNCserver PC software ..... 477

Setting the operating mode of the external device (fileSystem) ..... 477

Software for data transfer ..... 478

12.8 Ethernet Interface ..... 480

Introduction ..... 480

Connection possibilities ..... 480

Connecting the control to the network ..... 480

26

13 Tables and Overviews ..... 485

13.1 Machine-Specific User Parameters ..... 486

Function ..... 486

13.2 Pin Layout and Connecting Cable for the Data Interfaces ..... 494

RS-232-C/V.24 interface for HEIDEHAIN devices ..... 494

Non-HEIDENHAIN devices ..... 495

Ethernet interface RJ45 socket ..... 495

13.3 Technical Information ..... 496

13.4 Exchanging the Buffer Battery ..... 501

HEIDENHAIN TNC 320 27

Introduction

1.1 The TNC 320

HEIDENHAIN TNC controls are workshop-oriented contouring
controls that enable you to program conventional machining
operations right at the machine in an easy-to-use conversational
programming language. The TNC 320 is designed for milling and
drilling machine tools with up to 4 axes (optionally 5 axes). Instead of
the fourth or fifth axis, you can also change the angular position of the
spindle under program control.

Keyboard and screen layout are clearly arranged in such a way that the

1.1 The TNC 320

functions are fast and easy to use.

Programming: HEIDENHAIN conversational format

HEIDENHAIN conversational programming is an especially easy
method of writing programs. Interactive graphics illustrate the
individual machining steps for programming the contour. If a
production drawing is not dimensioned for NC, the HEIDENHAIN FK
free contour programming performs the necessary calculations
automatically. Workpiece machining can be graphically simulated
either during or before actual machining.

You can also enter and test one program while the control is running
another.

Compatibility

The scope of functions of the TNC 320 does not correspond to that of
the TNC 4xx and iTNC 530 series of controls. Therefore, machining
programs created on HEIDENHAIN contouring controls (starting from
the TNC 150 B) may not always run on the TNC 320. If NC blocks
contain invalid elements, the TNC will mark them as ERROR blocks
during download.

30 1 Introduction