HEIDENHAIN ITNC 530 - CONVERSATIONAL PROGRAMMING User manual

May2006
Service Manual
iTNC 530

July 2002 HEIDENHAIN Service Manual iTNC 530
1 Safety Precautions................................................................................................................. 9
2 Using the Service Manual ................................................................................................... 11
2.1 About this Manual ......................................................................................................... 11
2.2 Further Service Manuals................................................................................................ 11
2.3 Other Documentation:................................................................................................... 12
2.4 Support.......................................................................................................................... 12
2.5 Service Training Seminars ............................................................................................. 12
2.6 Safety ............................................................................................................................ 12
3 Code Numbers ..................................................................................................................... 13
3.1 Introduction ................................................................................................................... 13
3.2 Overview ....................................................................................................................... 13
3.3 Notes on Entering the Code Numbers .......................................................................... 14
4 Error Messages .................................................................................................................... 17
4.1 Introduction ................................................................................................................... 17
4.2 HELP Key....................................................................................................................... 19
4.3 ERR Key ........................................................................................................................ 20
4.4 CE Key .......................................................................................................................... 21
4.5 List of NC Error Messages ............................................................................................ 22
5 Errors..................................................................................................................................... 23
5.1 Introduction ................................................................................................................... 23
5.2 Notes and Tips............................................................................................................... 23
5.3 Overview of Possible Errors.......................................................................................... 26
5.4 Important Notes on the
Use of HEIDENHAIN Interface Boards in SIMODRIVE System.................................... 29
6 Log......................................................................................................................................... 35
6.1 General .......................................................................................................................... 35
6.2 Calling the Log............................................................................................................... 36
6.3 Overview of Log Entries................................................................................................ 37
6.4 Example of a Log Entry ................................................................................................. 40
7 Integrated Diagnosis Functions.......................................................................................... 41
7.1 Introduction ................................................................................................................... 41
7.2 Meanings of the Signals under “DSP”.......................................................................... 43
7.3 Electronic ID Label......................................................................................................... 47
8 Integrated Oscilloscope.......................................................................................................49
8.1 General .......................................................................................................................... 49
8.2 Setup ............................................................................................................................. 50
8.3 Saving and Loading Recordings..................................................................................... 53
8.4 Circular Interpolation Test.............................................................................................. 54
9 Monitoring Functions ..........................................................................................................55
9.1 Introduction ................................................................................................................... 55
9.2 During Booting............................................................................................................... 55
9.3 During Operation ........................................................................................................... 57
9.3.1 Position or Servo Lag Monitoring ........................................................................ 58
9.3.2 Nominal Speed Value ........................................................................................... 60
9.3.3 Movement Monitoring ......................................................................................... 61
9.3.4 Standstill Monitoring ............................................................................................ 62
9.3.5 Positioning Window ............................................................................................. 62
9.3.6 Monitoring of the Power Supply Unit .................................................................. 64
9.3.7 Temperature Monitoring ...................................................................................... 65
9.3.8 I2t Monitoring ....................................................................................................... 66
Contents

HEIDENHAIN Service Manual iTNC 530
9.3.9 Current Utilization of the Drive Motors ................................................................ 67
9.3.10 Status of HEIDENHAIN Inverters ...................................................................... 68
9.3.11 Control of Motor Brakes .................................................................................... 70
9.3.12 EMERGENCY STOP Monitoring During Operation ............................................ 72
10 PLC Diagnosis..................................................................................................................... 73
10.1 General ........................................................................................................................ 73
10.2 Service Diagnosis in PLC Mode .................................................................................. 76
10.2.1 The TABLE Function .......................................................................................... 76
10.2.2 The LOGIC Diagram .......................................................................................... 82
10.2.3 The TRACE Function ......................................................................................... 84
10.2.4 The WATCH LIST Function ................................................................................ 85
10.2.5 The I/O-FORCE LIST .......................................................................................... 87
10.3 The COMPILE Function............................................................................................... 89
10.4 Calling the PLC Error Table for Diagnosis.................................................................... 91
10.5 Nonvolatile PLC Markers and Words .......................................................................... 93
10.6 Overviews ................................................................................................................... 95
10.7 Specifications ............................................................................................................ 106
10.7.1 PLC Inputs ....................................................................................................... 106
10.7.2 Analog Inputs ................................................................................................... 107
10.7.3 Inputs for Thermistors ..................................................................................... 107
10.7.4 PLC Outputs .................................................................................................... 108
11 Principle of Operation of the iTNC 530 Control ............................................................ 109
11.1 Introduction ............................................................................................................... 109
11.2 Block Diagrams with Short Explanations................................................................... 109
11.3 Basic Circuit Diagrams ........................................................................................... 116
11.4 Exchange Possibilities of the iTNC 530..................................................................... 118
12 Important Features of HEIDENHAIN Components ....................................................... 119
12.1 HEIDENHAIN Components in a Machine Tool.......................................................... 119
12.2 Hardware Identification ............................................................................................. 120
12.3 Display of System Information.................................................................................. 130
13 Connector Designation and Layout .............................................................................. 135
13.1 Important Note ......................................................................................................... 135
13.2 MC and CC................................................................................................................ 135
13.2.1 Designation and Position of Connectors ......................................................... 135
13.2.2 Pin Layouts on the MC and CC ....................................................................... 142
13.3 Power Supply Units................................................................................................... 173
13.3.1 UV 105 Power Supply Unit .............................................................................. 174
13.3.2 UV 105 B Power Supply Unit ........................................................................... 176
13.3.3 UV 106 (B) Power Supply Unit ......................................................................... 178
13.4 Inverters and Motors................................................................................................. 179
13.5 Interface boards for the SIMODRIVE system 611D.................................................. 179
13.6 Encoders ................................................................................................................... 180
13.6.1 Position encoders ............................................................................................ 180
13.6.2 Speed encoders ............................................................................................... 182
13.7 Touch Probe Systems ............................................................................................... 182
13.8 Handwheels .............................................................................................................. 183
13.8.1 HR 4xx Portable Handwheel ............................................................................ 183
13.8.2 HR 130 Panel-Mounted Handwheel ................................................................ 185
13.8.3 HRA 110 Handwheel Adapter ......................................................................... 185
13.9 PLC Input/Output Units ............................................................................................. 187
13.9.1 Designation and Position of Connectors ......................................................... 187
13.9.2 PL 4xxB Pin Layouts ........................................................................................ 190
13.9.3 Pin Layout PL 510 ............................................................................................ 195
13.10 Machine Operating Panel ...................................................................................... 199

July 2002 HEIDENHAIN Service Manual iTNC 530
13.10.1 Designation and Position of Connectors on MB 420 ..................................... 199
13.10.2 Pin Layouts on MB 420 ................................................................................. 199
13.11 iTNC Keyboard......................................................................................................... 200
13.11.1 Designation and Position of Connectors ........................................................ 200
13.11.2 Pin layouts ..................................................................................................... 201
13.12 Visual Display Units ................................................................................................. 202
13.12.1 Designation and Position of Connectors ....................................................... 202
13.12.2 Pin layouts .................................................................................................... 203
13.13 BTS 1x0 Monitor/Keyboard Switch.......................................................................... 204
14 Power Supply................................................................................................................... 205
14.1 Power Supply for the iTNC 530................................................................................. 205
14.1.1 General ............................................................................................................ 205
14.1.2 UV 105, UV 105 B ............................................................................................ 210
14.1.3 UV 106, UV 106 B ............................................................................................ 214
14.2 Power Supply for Control-Is-Ready Signal................................................................. 216
14.3 Buffer Battery............................................................................................................ 217
14.4 Info menu .................................................................................................................. 220
14.5 Power Supply for the Display Units........................................................................... 221
14.6 Power Supply for PLC Outputs ................................................................................. 222
14.6.1 General ............................................................................................................ 222
14.6.2 Supply Voltage for PLC Outputs on the MC .................................................... 223
14.6.3 Supply Voltage for PLC Outputs on the PL 4xx B ............................................ 225
14.6.4 Supply Voltage for PLC Outputs on the PL 510 ............................................... 228
15 Hard Disk and File Manager of the iTNC 530................................................................. 231
15.1 Introduction ............................................................................................................... 231
15.2 Structure of the Hard Disk......................................................................................... 232
15.3 Hard Disk Test ......................................................................................................... 233
15.4 Setting the System Time........................................................................................... 237
15.5 File Management of TNC Partition (TNC:\) .............................................................. 239
15.6 File Management PLC Partition (PLC:\) ..................................................................... 241
16 Data Backup ..................................................................................................................... 245
16.1 Introduction ............................................................................................................... 245
16.2 Connection Setup...................................................................................................... 247
16.2.1 Via Ethernet ..................................................................................................... 247
16.2.2 Via Serial Interface RS 232/V.24 or RS 422/V.11 ............................................. 256
16.3 Reading In and Out of Individual Files or Directories................................................. 258
16.4 Backup....................................................................................................................... 261
16.5 Extracting files from the backup file.......................................................................... 265
16.6 Restore...................................................................................................................... 266
16.7 Data Interface Operating Modes............................................................................... 269
16.7.1 Overview of operating modes ......................................................................... 269
16.7.2 Interface configuration and assignment of mode ............................................ 270
16.8 Drive Symbols ........................................................................................................... 271
16.9 Cable overview.......................................................................................................... 272
16.9.1 Ethernet Interface RJ45 Connection ............................................................... 272
16.9.2 RS-232-C/V.24 .................................................................................................. 273
16.9.3 RS-422/V.11 .................................................................................................... 278
17 Encoder Interface ............................................................................................................. 279
17.1 Position encoders...................................................................................................... 279
17.1.1 Introduction ...................................................................................................... 279
17.1.2 Possible Causes of Error .................................................................................. 280
17.1.3 Service diagnosis ............................................................................................. 281

HEIDENHAIN Service Manual iTNC 530
17.1.4 Additional Diagnosis Possibility on Encoders with EnDat Interface ................ 283
17.1.5 Corrective action .............................................................................................. 283
17.1.6 Re-Setting the Machine Datum ....................................................................... 284
17.2 Speed encoders ........................................................................................................ 286
17.2.1 Introduction .................................................................................................... 286
17.2.2 Possible Causes of Error ................................................................................. 287
17.2.3 Trouble Shooting on the CC 422 ..................................................................... 287
17.2.4 Trouble Shooting on CC the 422 ..................................................................... 289
17.2.5 Additional Diagnosis Possibility on Encoders with EnDat Interface ................ 292
17.2.6 Corrective action .............................................................................................. 292
17.2.7 Resetting the Spindle Orientation ................................................................... 293
17.3 Error Code for Encoders with EnDat Interface.......................................................... 294
17.4 Checking position and speed encoders..................................................................... 295
17.5 Position Measurement with the Motor Encoder ...................................................... 296
18 Referencing....................................................................................................................... 301
18.1 Definition................................................................................................................... 301
18.2 Traversing the Reference Marks............................................................................... 302
18.3 Deselect Referencing for Axes ................................................................................. 309
19 Checking the Enables on the iTNC................................................................................. 311
19.1 General ...................................................................................................................... 311
19.2 Examination............................................................................................................... 313
19.2.1 Examination of the output Control-is-ready (X41/pin34) and input Control-is-ready
signal acknowledgement I3 (X42/pin 4) .......................................................... 314
19.2.2 Checking the global drive enable I32, connector X42 / pin 33 ......................... 319
19.2.3 Checking the drive enabling for the axis groups via connector
X150 and X151 (if wired) ................................................................................ 321
19.2.4 Checking the readiness of the inverter system ............................................... 322
19.2.5 Überprüfung von PLC-Modulen, Merkern und WörternChecking PLC
modules, markers and words ......................................................................... 325
20 Interface to the Drives..................................................................................................... 327
20.1 Digital Drives ............................................................................................................. 327
20.1.1 Introduction ..................................................................................................... 327
20.1.2 Possible Causes of Errors ................................................................................ 328
20.1.3 Trouble Shooting: Exchanging PWM Outputs on the CC 422 ......................... 329
20.1.4 Trouble Shooting: Exchanging PWM Outputs on the CC 424 ......................... 333
20.1.5 Trouble Shooting: Exchanging Power Modules or Output Stages of the
Same Type ...................................................................................................... 337
20.1.6 Trouble Shooting: Exchanging the HEIDENHAIN Interface Boards for
the SIMODRIVE 611 System .......................................................................... 340
20.2 Analog Drives ............................................................................................................ 341
20.2.1 Introduction ..................................................................................................... 341
20.2.2 Possible Causes of Errors ................................................................................ 341
20.2.3 Testing the analog nominal speed value interface ......................................... 341
20.2.4 Adjusting the Electrical Offset (Drift Adjustment) ........................................... 346
20.2.5 Speed Adjustment at Servo Amplifier (Tachometer Adjustment) .................... 349
20.3 Switching the Position Display for Service Purposes................................................ 351
21 Visual Display Unit .......................................................................................................... 353
21.1 General ...................................................................................................................... 353
21.2 Possible Causes of Errors ......................................................................................... 353
21.3 Fault diagnosis........................................................................................................... 354
22 Keyboard Unit .................................................................................................................. 357
22.1 General ...................................................................................................................... 357
22.2 Front View of the Keyboard Units ............................................................................ 357
22.3 Possible Causes of Error ........................................................................................... 359

July 2002 HEIDENHAIN Service Manual iTNC 530
22.4 Checking the Keys..................................................................................................... 360
22.5 Checking the Potentiometers.................................................................................... 364
22.6 Checking the Mouse Pad .......................................................................................... 366
22.7 Key Matrix of the Keyboard Units.............................................................................. 367
22.8 Key Matrix of the Keyboard Units.............................................................................. 382
23 Machine Operating Panel................................................................................................ 385
23.1 General ...................................................................................................................... 385
23.2 Checking the Power Supply ...................................................................................... 386
23.3 Checking the Keys..................................................................................................... 387
23.4 Checking the Outputs................................................................................................ 389
24 Handwheel........................................................................................................................ 391
24.1 General information................................................................................................... 391
24.2 HR 420 Portable Handwheel with Display................................................................. 393
24.2.1 Checking the Keys ........................................................................................... 393
24.2.2 Checking the Potentiometers .......................................................................... 393
24.3 HR 410 Portable Handwheel ..................................................................................... 396
24.3.1 Checking the Keys ........................................................................................... 396
24.4 HR 150 Panel-Mounted Handwheels with HRA 110 Handwheel Adapter................ 398
24.4.1 Checking the Switch ........................................................................................ 398
25 Touch Probe ..................................................................................................................... 401
25.1 General information................................................................................................... 401
25.2 Touch Trigger Probe with Cable Connection for Workpiece Setup and
Measurement ............................................................................................................. 403
25.3 Touch Trigger Probe with Infrared Transmission for Workpiece Setup
and Measuring........................................................................................................... 405
25.4 Triggering Touch Probe for Tool Measurement......................................................... 408
26 Exchange of HEIDENHAIN Components........................................................................ 411
26.1 Important Information................................................................................................ 411
26.2 Exchanging the MC 422 ............................................................................................ 418
26.3 Removing the Drive Assembly.................................................................................. 425
26.4 Exchanging the MC 422 B or the MC 420................................................................. 431
26.5 Exchanging the HDR ................................................................................................. 433
26.6 Exchanging the CC .................................................................................................... 441
26.7 Exchange of Further HEIDENHAIN Components...................................................... 442
27 Loading of Service Packs ................................................................................................ 443
27.1 Introduction ............................................................................................................... 443
27.2 Preparations and Execution up to NC Software 34049x-01
(Single and Dual-Processor Version)........................................................................... 444
27.3 Preparations and Execution as of NC Software 34049x-02
(Single-Processor Version).......................................................................................... 446
27.4 Preparations and Execution as of NC Software 34049x-02
(Dual-Processor Version) ............................................................................................ 449
27.5 Service Packs on the Control's Hard Disk ................................................................. 452
28 Activating the NC Software Used on the Machine....................................................... 453
28.1 Introduction ............................................................................................................... 453
28.2 Execution................................................................................................................... 453
29 Inspection, Measuring and Test Equipment.................................................................. 455
29.1 Important notes......................................................................................................... 455
29.2 Test Adapter, ID 375830-01 ...................................................................................... 456
29.3 Universal Measuring Adapter, ID 255480-01............................................................. 460
29.4 Encoder Diagnostic Set PWM 9, ID 512134-01 ....................................................... 461
29.5 Mounting Help PWT 10/17/18................................................................................... 463
29.6 IK 215 Adjustment and Testing Kit, ID 547858-01 ................................................... 464

HEIDENHAIN Service Manual iTNC 530
30 Machine Parameters........................................................................................................ 465
30.1 What is a Machine Parameter? ................................................................................. 465
30.2 The Machine Parameter Editor.................................................................................. 465
30.3 Meaning of the Machine Parameters........................................................................ 473
30.4 List of Machine Parameters
(excerpt from the Technical Manual of iTNC 530 of November 2005) ....................... 474
30.4.1 Encoders and Machines .................................................................................. 474
30.4.2 Positioning ....................................................................................................... 480
30.4.3 Operation with velocity feedforward control ................................................... 484
30.4.4 Operation with following error (servo lag) ....................................................... 485
30.4.5 Integrated speed and current control .............................................................. 486
30.4.6 Spindle ............................................................................................................. 495
30.4.7 Integral PLC ..................................................................................................... 498
30.4.8 Configuration of the Data Interface ................................................................. 501
30.4.9 3-D touch probe ............................................................................................... 503
30.4.10 Tool Measurement with TT ........................................................................... 505
30.4.11 Tapping .......................................................................................................... 509
30.4.12 Display and Operation ................................................................................... 510
30.4.13 Color .............................................................................................................. 517
30.4.14 Machining and program run ........................................................................... 520
30.4.15 Hardware ....................................................................................................... 527
30.4.16 Second spindle .............................................................................................. 534

May 2006 1 – 9
1 Safety Precautions
DANGER
Ensure that the equipment grounding conductor is continuous!
Interruptions in the equipment grounding conductor may cause damage to persons or
property.
DANGER
Ensure that the main switch of the control and units are switched off when you engage or
disengage connecting elements or connection clamps.
Caution
In order to be able to judge the behavior of an NC controlled machine, you need to have
fundamental knowledge about controls, encoders, drives, electronics and mechanics.
Inappropriate use may cause considerable damage to persons or property.
DANGER
Incorrect or not optimized input values may lead to malfunction of the machine and may
thus cause damage to persons or property.
Machine parameters may only be changed by the machine manufacturer or after consulting
the machine manufacturer!
Caution
Note the safety precautions on the machine (e.g., stickers, signs) and the safety precautions
in the documentation of the machine manufacturer (e.g., operating instruction).
Caution
HEIDENHAIN does not accept any responsibility for indirect or direct damage caused to
persons or property through incorrect use or operation of the machine!
DANGER
Technicians who work on the electricity of the machine must have the corresponding
technical knowledge and competence!
DANGER
Always secure vertical axes from falling down before you perform tests on these axes!
DANGER
The interfaces for the PLC inputs/outputs, machine operating panel and PL expansion cards
comply with the basic insulation in accordance with IEC 742 EN 50 178.
Only units that comply with the requirements of IEC 742 EN 50 178 for basic insulation may
be connected, otherwise damage to persons or property may be caused.
The maximum dc voltage mean value of the PLC inputs is 31 V.

1 – 10 HEIDENHAIN Service Manual iTNC 530
Meaning of the
symbols used in
this manual
DANGER
Failure to comply with this information could result in most serious up to fatal injuries or in
substantial material damage.
Caution
Failure to comply with this information could result in injuries and interruptions of operation
up to material damage.
Note
These boxes contain important and useful information for servicing.

May 2006 2 – 11
2 Using the Service Manual
2.1 About this Manual
This service manual will assist service personnel in the diagnosis and correction of errors on
TNC-controlled machine tools.
It includes:
Theoretical explanation of functions and their correlations
Details of possible error reasons
Descriptions of error diagnosis
Details of corrective action
The “Overview of Possible Errors” on page 26 often includes references to the descriptions of
error diagnosis. You will find these descriptions in the chapters of the Service Manual structured
according to topics.
The Service Manual does not provide commissioning support!
It comprises the service possibilities with the current hardware and software of the control at
the editing date of this manual. The service possibilities of your units may differ from the manual.
Hardware or software based differences in servicing are indicated in the corresponding
descriptions.
This manual is valid for:
iTNC 530 single-processor with NC software 340420 / 421
iTNC 530 single-processor with NC software 340422 / 423
iTNC 530 dual-processor with NC software 340480 / 481
iTNC 530 single-processor with NC software 340490 / 491
iTNC 530 dual-processor with NC software 340492 / 493
It must be provided that …
The machine had been working perfectly before the error ocurred.
Only genuine spare parts are used!
Udpate service This Service Manual is updated only at irregular intervals.
You find the current printable version on our website.
(http://www.heidenhain.de/Services/...)
A zip file can be downloaded. This zip file can be unzipped with a password. Your receive this
password during a HEIDENHAIN service training course or upon telephoned request!
Loose-leaf binders or ring binders are only provided in connection with a service training course.
2.2 Further Service Manuals
Service Manual for Inverter Systems and Motors
Note
Basic knowledge in Windows is required for some descriptions in this Service Manual
concerning the handling of the dual-processor control iTNC 530 and the use of a service
laptop or PC.

2 – 12 HEIDENHAIN Service Manual iTNC 530
2.3 Other Documentation
In the following documents your find further important information:
Machine documentation of the machine manufacturer
(circuit diagrams, wiring diagrams, machine operation manual, etc.)
HEIDENHAIN User's Manual for iTNC 530
TNCguide (DVD)
Mounting instructions by HEIDENHAIN
Brochures of the corresponding HEIDENHAIN units
2.4 Support
However, support will also be provided by the Service Department of HEIDENHAIN Traunreut
or by the nearest HEIDENHAIN agency.
You will find the necessary telephone and fax numbers, as well as relevant e-mail addresses, on
the back cover of the Service Manual, or on the HEIDENHAIN website at
http://www.heidenhain.de.
2.5 Service Training Seminars
HEIDENHAIN Traunreut offers service training seminars in German. We recommend the
HEIDENHAIN Service Training Seminars for iTNC 530 for the technician who works with this
Service Manual.
Please inquire at HEIDENHAIN Traunreut or go to our website at
www.heidenhain.de/Services/Training.
2.6 Safety
Note
Current HEIDENHAIN documentation can be obtained fast from our website.
--> www.heidenhain.de
Caution
The machine manufacturer must be contacted for error diagnosis on your machine tool!
Note
If required, please inquire at the HEIDENHAIN subsidiary in your country whether Service
Training Seminars are offered in your language.
DANGER
It is extremely important to read also the general safety precautions in chapter 1!
See “Safety Precautions” on page 9.

May 2006 3 – 13
3 Code Numbers
3.1 Introduction
With code numbers …
Certain areas of the hard disk
Certain file types
Certain functions
... can be called.
3.2 Overview
DANGER
Code numbers may only be passed on and/or used by trained service technicians.
Inexpert handling may result in the loss of important data, in a faulty machine performance
and thus lead to damage or injury to property or persons.
Code number Brief Description
0 Delete the soft keys MP EDIT, PLC EDIT, OSCI, etc.
123 Edit subset of machine parameters for the machine operator
75368 Offset adjustment for analog axes, see page 1- 346
79513 Info menu (U[BATT], U[ACCU], U[VCC], TEMP, T[CPU1], see page 1- 220
95148 Call the active machine parameter list, see page 1- 468
531210 Reset non-volatile PLC markers and words in the RAM
688379 Integrated oscilloskop, see page 1- 49
807667 Call the PLC area, see page 1- 241
857282 Reset the operating times
LOGBOOK Call and save the internal log of the TNC, see page 1- 35
NET123 Network settings for the single-processor control, see page 1- 247
SIK Display of the number of the SIK system identification key and display of the
enabled options, see page 1- 414
VERSION Create the file TNC:\Version.a
System data is saved in this file for diagnostic purposes.
The file can be read out for diagnosis.

3 – 14 HEIDENHAIN Service Manual iTNC 530
3.3 Notes on Entering the Code Numbers
Keep the code numbers in confidence!
Code numbers can only be entered in the Programming and Editing mode.
The screen must be blank or the file editor is displayed.
The program manager must not be open (pressing the MOD key would activate the interface
settings screen).
Press MOD and enter the code number. Finish with ENTER.
Example of calling
the active machine
parameter list
Select the Programming and Editing operating mode.
Call window for code number
Enter and confirm code number
As long as the machine parameter list is in the editor no further code number can be entered.
I.e., first close the MP list when you want to enter a new code number
When certain code numbers are entered, new soft keys are displayed, e.g., MP EDIT, PLC
EDIT, OSCI.
With these soft keys you can also change to the corresponding areas without having to enter
the code number again.
After you have entered the code number for the machine parameters the PLC tree can be
seen in the program manager. Only files with the ending .MP are displayed.
Note
The machine manufacturer can define own MP and PLC code numbers.
In this case the HEIDENHAIN code numbers do not function any longer.
--> Contact your machine manufacturer.

May 2006 3 – 15
After you have entered the PLC code number, all files of the PLC tree can be seen and loaded
into the editor. However, to edit machine parameters, the soft key MP EDIT needs to be
pressed.
When you have finished your work do not forget to delete all code-number soft keys (MP
EDIT, PLC EDIT, OSCI, etc.) --> Enter code number 0, confirm with ENTER and exit the code-
number page with END or reboot the control.

3 – 16 HEIDENHAIN Service Manual iTNC 530

May 2006 4 – 17
4ErrorMessages
4.1 Introduction
iTNC 530 features a comprehensive integral monitoring system for the prevention of input or
operation errors, as well as for identification and diagnosis of technical errors on the control
and the connected units. The monitoring system is an integral component of the iTNC hardware
and software and is active as long as the control is switched on. The presence of a technical fault
or an operation error is made known through a plain-language message.
The machine manufacturer can also define specific PLC error messages.
Type of error
message
PLC Error Messages
Machine-specific error messages
Are defined by the machine manufacturer (e.g., coolant pump defective, protective door open,
etc.)
The machine manufacturer defines how the control reacts to a PLC error message (NC stop,
EMERGENCY STOP, etc.).
The machine manufacturer defines whether the control can still be operated or has to be
rebooted after a PLC error message.
If you have any questions, please contact your machine manufacturer.
NC Error Messages
Are part of the HEIDENHAIN NC software
Can be subdivided in error messages that result from operation, programming and machine
applications and those that indicate a technical defect (units, electronical and mechanical
parts, etc.).
DSP error messages are special NC error messages. Such error messages are preceded by a
HEX code, e.g., "C300 track error". DSP errors may signalize defects in the CC 42x and/or con-
nected units.
HEIDENHAIN defines how the control reacts to an NC error message (NC stop, EMERGENCY
STOP, etc.).
HEIDENHAIN defines whether the control can still be operated or has to be rebooted after an
NC error message.
If you have any questions, please contact your machine manufacturer and/or HEIDENHAIN.
Operating System Error Messages
Often show the note CHILD PROCESS ERROR
The control cannot be operated any more and has to be rebooted.
If you have any questions, please contact your machine manufacturer and/or HEIDENHAIN.
Note
Is the displayed error message an NC or PLC error message?
If you cannot see this from the error text, press ERR --> See the Group column of the error
list in the newly displayed window. PLC errors are marked as such, NC errors are again
subdivided into subsections; See “ERR Key” on page 20.
A further possibility is to call the log. --> See “Log” on page 35. The NC error messages are
there distinguished by a N-, PLC error messages by a P-.
There are no error numbers assigned to NC error messages that begin with N-1 .

4 – 18 HEIDENHAIN Service Manual iTNC 530
Display of error
message
All error messages that can be acknowledged with the CE key are …
Displayed in the headline (upper edge of display; normally in red color).
Are made known through a plain-language message.
(before some error messages there is an additional HEX code. It is used for identification
purposes as so-called DSP error. These are errors in the control loop or errors that are
recognized by the control-loop software.)
The machine manufacturer can display additional information on PLC error messages in the
small PLC window (atop the soft-key row).
Error messages that require a rebooting of the control ...
Are displayed in a red window in the center of the screen.
Are made known through a plain-language message.
(before some error messages there is an additional HEX code. It is used for identification
purposes as so-called DSP error. These are errors in the control loop or errors that are
recognized by the control-loop software.)
Reaction of
the control
Display Only
The machine does not react. Programs are not stopped.
NC Stop
The axes decelerate at the nominal-value characteristics; normally the contour of the work-
piece is not damaged.
EMERGENCY STOP
Axes and spindle decelerate at the current limit; the machine should be stopped as fast as
possible. The contour of the workpiece is not regarded and may be damaged.

May 2006 4 – 19
4.2 HELP Key
Display help texts for error messages
(if this key is pressed again, the window will be closed)
If the service technician presses the HELP key a window is shown that describes the cause
of error and possibilities of corrective action in addition to the displayed error message.
This support can also be realized for PLC error messages by the machine manufacturer!
Note
HELP texts cannot be displayed any more for error messages in red windows. The control
is not in operating condition any more. It must be rebooted.
Information on these errors can be found in the list of NC error messages;
See “List of NC Error Messages” on page 22.

4 – 20 HEIDENHAIN Service Manual iTNC 530
4.3 ERR Key
Display all pending error messages
(if this key is pressed again, the window will be closed)
If there is an AND symbol (little red roof) in the header in addition to the error message, there is
more than one pending error message.
The ERR key (ERROR) is located directly over the HELP key. If this key is pressed, an error list
appears. All pending NC and PLC error messages of the control are displayed in an own window.
In addition, the help window can be called with the HELP key.
Note
If there is no ERR key over the HELP key on your keyboard, press the corresponding space
bar over the HELP key. --> If the NC software of the iTNC 530 supports the function of the
ERR key, the ERR list can also be called!