HEIDENHAIN TNC 430 Technical Manual

Technical Manual

TNC 426 CB/PB TNC 430

NC-Software 280 470-12

280 471-12

280 472-12

280 473-12

280 474-12

280 475-12

280 476-01

280 477-01

April 1999

208 896 21 · 7 · 4/99 · S · Printed in Germany · Subject to change without notice (208 896 EC)

Foreword

This Technical Manual is intended for manufacturers and distributors of machine tools. It contains all the necessary information for the assembly, electrical installation, start-up, and PLC programming for the HEIDENHAIN contouring controls.

When hardware or software is improved in these HEIDENHAIN contouring controls you will receive a free delivery of updated information. Please arrange and insert this updated information in your manual without delay. This will ensure that your manual always remains at the current revision level.

You can use extracts from this manual for your machine documentation. An enlargement of the manual’s format (17 cm x 24 cm) by a factor of 1.225 will produce pages in A4 format.

No documentation can be perfect. Like all living things it must grow and change. Among other things, it lives from your impulses and suggestions for improvement. Please help us by letting us know your ideas.

DR. JOHANNES HEIDENHAIN GmbH

Department E/P

Dr.-Johannes-Heidenhain-Str. 5

D-83301 Traunreut

Germany

November 97 Foreword

TNC 426B, TNC 430

Contents Technical Manual TNC 426 B, TNC 430

Update Informations No. 12 - 7, older Informations

Update information for your TNC.

Introduction

Technical data and general information on software and ID numbers.

Mounting and Electrical Installation

Mounting restrictions, power supply, pin layouts of the units and cables.

Machine Integration

Detailed description of machine functions with the respective machine parameters, markers, words and PLC modules.

PLC Programming

General information on the PLC, TRACE functions, complete set of PLC commands.

Data interfaces

Detailed description of the data interfaces.

Original Equipment Manufacturer’s (OEM) Cycles

Important on the OEM cycles.

Appendix

List of the PLC error messages, tables, dimensions, block diagrams, cable overviews.

Machine Parameters

Machine parameter input and output, complete list of the machine parameters.

List of Markers and Words

Complete list of the markers and words.

1

2

3

4

5

6

7

8

9

10

	List of Modules	11
	Complete list of the PLC modules.

1 Update Informations No. 12 - 7, older informations				1–1
2 Introduction				2–1
2.1		Integrated Current Control		2–1
	2.2	Brief Description		2–2
2.3		Software		2–7
			2.3.1 NC Software	2–7
			2.3.2 Software Option	2–7
			2.3.3 PLC Software	2–8
			2.3.4 Software Exchange	2–8
			2.3.5 Data Backup	2–9
2.4		Hardware		2–9
			2.4.1 ID Numbers	2–10
	2.5 Release Dates			2–13
			2.5.1 NC Software Versions 280 470 and 280 471	2–13
			2.5.2 NC software versions 280 472 and 280 473	2–15
3 Mounting and Electrical Installation				3–1
	3.1	Electrical Noise Immunity		3–1
	3.2	Heat Generation and Cooling		3–2
3.3		Humidity		3–3
	3.4	Mechanical Vibration		3–3
	3.5	Mounting Position		3–3
	3.6	Degree of Protection		3–6
3.7		Connection Overview		3–8
			3.7.1 LE 426 CB	3–8
			3.7.2 LE 426 PB (Spindle with up to 9000 rpm)	3–9
			3.7.3 LE 426 PB (Spindle with up to 15 000 rpm)	3–10
			3.7.4 LE 430 CA	3–11
			3.7.5 LE 430 PA	3–12
3.8		Power Supply		3–15
			3.8.1 NC Power Supply	3–15
			3.8.2 Buffer Battery Backup	3–16
			3.8.3 PLC Power Supply	3–17
			3.8.4 Power Supply for the Visual Display Units	3–19
3.9		Measuring Systems		3–20
			3.9.1 Encoders for Position	3–20
			3.9.2 Encoders for Speed (TNC 426 PB and TNC 430 PA Only)	3–23
			3.9.3 Adapter for Encoder Signals	3–24
	3.10 Motor Power Stage Connection			3–25
	3.11 Analog Inputs			3–29
	3.12 Analog Outputs			3–32

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3.13		Touch Probes	3–35
		3.13.1 Triggering Touch Probe for Workpiece Measurement	3–35
		3.13.2 Touch Trigger Probe for Tool Measurement	3–37
		3.13.3 Measuring Touch Probe (Option)	3–38
3.14		Data Interface	3–41
		3.14.1 RS-232-C/V.24 Data Interface	3–41
		3.14.2 RS-422/V.11 Data Interface	3–42
		3.14.3 Ethernet Interface (Option)	3–43
3.15		Handwheel Input	3–45
		3.15.1 Connector Assignment on the LE	3–45
		3.15.2 HR 410 Portable Handwheel	3–46
		3.15.3 Panel-Mounted Handwheel HR 130	3–48
		3.15.4 Handwheel Adapter HRA 110	3–49
	3.16	Input: Spindle Reference Signal	3–53
	3.17	Input: Drive Motor Enabling (Only TNC 426 PB, TNC 430 PA)	3–53
	3.18	Switching Inputs 24 Vdc (PLC)	3–54
3.19		Switching Outputs 24 Vdc (PLC)	3–57
	3.20	Connection of the PLC Expansion	3–60
	3.21	Machine Operating Panel	3–65
	3.22	TNC Keyboard	3–67
3.23		Visual Display Unit	3–69
3.24		Mounting the Optional PCBs	3–75
4 Machine Integration			4–1
	4.1 Machine Axes		4–1
		4.1.1 Encoders	4–2
		4.1.2 Axis Designation	4–4
		4.1.3 Assignment of Axes	4–5
		4.1.4 Reading axis information	4–7
		4.1.5 Traverse Ranges	4–8
		4.1.6 Lubrication Pulse	4–10
	4.2 PLC Axes		4–11
	4.3 Axis Error Compensation		4–14
		4.3.1 Backlash Compensation	4–14
		4.3.2 Linear Axis-Error Compensation	4–15
		4.3.3 Nonlinear Axis Error Compensation	4–16
		4.3.4 Temperature Compensation	4–20
		4.3.5 Compensation for Reversal Errors in Circular Motion	4–21
		4.3.6 Compensation of Static Friction	4–24
		4.3.7 Compensation of Sliding Friction	4–25
	4.4 PLC Positioning Commands		4–26

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4.5 Tilting Axes			4–29
	4.5.1 “Tilt Working Plane” Feature		4–29
	4.5.2 Automatic Compensation of Offset for Tilting Axes		4–37
	4.5.3 Cylinder Surface		4–38
4.6 Synchronized Axes			4–39
	4.6.1 Synchronization Control		4–39
	4.6.2 Conventions		4–40
4.7 Reference Marks			4–41
	4.7.1 Traversing the Reference Marks		4–42
4.8 The Control Loop			4–51
	4.8.1 Interpolator		4–53
	4.8.2 Position Controllers		4–56
	4.8.3 Motor Speed Controller (Only TNC 426 PB, TNC 430 PA)		4–67
	4.8.4 Current Controller (Only TNC 426 PB, 430 PA)		4–73
4.9 Offset Adjustment			4–75
	4.9.1 Offset Adjustment by Code Number		4–75
	4.9.2 Automatic Cyclic Offset Adjustment		4–75
	4.9.3 Offset Adjustment with Integral Factor		4–76
4.10 Contour Behavior			4–76
	4.10.1 Radial Acceleration		4–76
	4.10.2 Contour Speed in Corners		4–77
4.11 Monitoring Functions			4–79
	4.11.1 Position Monitoring		4–80
	4.11.2 Nominal Speed Monitoring		4–81
	4.11.3 Movement Monitoring		4–81
	4.11.4 Standstill Monitoring		4–82
	4.11.5 Positioning Window		4–82
	4.11.6 NC Supply Voltage Monitoring		4–84
	4.11.7 Temperature Monitoring		4–84
	4.11.8 I²t Monitoring (Digital Axes Only)		4–85
	4.11.9 Monitoring: Power Stage, DC-Link Voltage (Digital Axes Only)		4–87
	4.11.10 Instantaneous Utilization of the Servo Drives	(Digital Axes Only)	4–87
	4.11.11 EMERGENCY STOP Monitoring		4–89
4.12 Spindle			4–94
	4.12.1 Position Encoder of the Spindle		4–94
	4.12.2 Analog and Digital Spindle Control		4–96
	4.12.3 Coded Output of Spindle Speed		4–102
	4.12.4 Oriented Spindle Stop		4–104
	4.12.5 Tapping with Floating Tap Holder and Nominal Speed Output		4–108
	4.12.6 Tapping with Floating Tap Holder and Coded Spindle-Speed Output		4–111
	4.12.7 Rigid Tapping		4–112
	4.12.8 Speed Controller (Only TNC 426 PB, TNC 430 PA)		4–114
	4.12.9 Current Controller (Only TNC 426 PB, TNC 430 PA)		4–114
	4.12.10 Wye Connection / Delta Connection (Only with Spindle DSP)		4–115

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4.13 Display and Operation		4–117
	4.13.1 Machine Datum	4–117
	4.13.2 Color Adjustment	4–119
	4.13.3 Graphic Display	4–122
	4.13.4 Status Display	4–124
	4.13.5 PLC Display	4–133
	4.13.6 Small PLC Window	4–133
	4.13.7 Large PLC Window	4–137
	4.13.8 PLC Soft Keys	4–150
	4.13.9 Help	4–152
	4.13.10 Superimpose PLC Window	4–154
	4.13.11 M Functions	4–156
	4.13.12 Error Messages	4–159
	4.13.13 Cycles	4–163
	4.13.14 Returning to the Contour	4–167
	4.13.15 Files	4–171
	4.13.16 Datum Tables (.D)	4–172
	4.13.17 Pallet Management	4–173
	4.13.18 Freely Defined Tables	4–177
	4.13.19 PLC Files	4–184
	4.13.20 User Parameters	4–187
	4.13.21 Code Numbers	4–188
	4.13.22 Programming Station	4–188
	4.13.23 Conversational Language	4–189
	4.13.24 Memory Test	4–190
	4.13.25 Arc End-Point Tolerance	4–190
	4.13.26 Radius Compensation R+, R-	4–190
	4.13.27 Power Interrupted Message	4–191
	4.13.28 Operating Times	4–191
4.14 Keystroke Simulation		4–196
	4.14.1 TNC Keyboard	4–196
	4.14.2 Machine Operating Panel	4–201
4.15 Touch Probe		4–204
	4.15.1 Standard Probing Cycles	4–204
	4.15.2 Logging Probe Measurements	4–208
	4.15.3 Digitizing with the Triggering Touch Probe	4–212
	4.15.4 Digitizing with the Measuring Touch Probe	4–219
	4.15.5 Tool Measurement	4–224
4.16 Electronic Handwheel		4–232
	4.16.1 HR 130 Panel-Mounted Handwheel	4–234
	4.16.2 HR 410 Portable Handwheel	4–235
	4.16.3 HR 150 Panel-Mounted Handwheels with HRA 110 Adapter	4–236

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	4.17 PLC Inputs/Outputs		4–238
		4.17.1 24-Vdc Switching Inputs/Outputs	4–238
		4.17.2 Analog Inputs	4–240
		4.17.3 Analog Outputs	4–241
	4.18 Incremental Jog Positioning		4–242
	4.19 Hirth Coupling		4–243
	4.20 Datum Shift		4–244
	4.21 Tool Changer		4–246
		4.21.1 Tool Table, Pocket Table	4–246
		4.21.2 Automatic Calculation of Cutting Data	4–254
		4.21.3 Automatic Tool Recognition	4–257
		4.21.4 Controlling the Tool Changer	4–267
		4.21.5 PLC Programming Example	4–284
	4.22 Special Functions for Laser Cutting Machines		4–297
		4.22.1 Analog Voltage Output	4–297
		4.22.2 Graphic Simulation Without TOOL CALL	4–299
		4.22.3 Program Stop with M Functions and TOOL CALL S	4–300
	4.23 Integrated Oscilloscope		4–302
	4.24 Commissioning		4–307
		4.24.1 Preparation	4–307
		4.24.2 Digital Axis	4–307
		4.24.3 Analog Axes	4–328
		4.24.4 Digital Spindle for TNC 426 without Spindle DSP	4–333
		4.24.5 Digital Spindle for TNC 430 / TNC 426 with Spindle DSP	4–337
		4.24.6 Analog Spindle	4–339
5 PLC Programming			5–1
	5.1 PLC Functions		5–1
		5.1.1 Select PLC Operation	5–1
		5.1.2 PLC Main Menu	5–2
		5.1.3 File Management	5–4
		5.1.4 TRACE Functions	5–5
		5.1.5 Logic Diagram	5–6
		5.1.6 TABLE Function	5–7
		5.1.7 COMPILE Function	5–8
	5.2 Operands		5–9
		5.2.1 Operand Directory	5–9
		5.2.2 Operand Addressing	5–10
		5.2.3 Data Transfer	5–11
		5.2.4 Data Transfer NC → PLC	5–11
		5.2.5 Data Transfer PLC → NC	5–17
		5.2.6 Timer	5–25
		5.2.7 Counters	5–27
		5.2.8 Fast PLC Inputs	5–29

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5.3 Hard-Disk Organization			5–30
5.4 Program Creation			5–33
	5.4.1 ASCII Editor		5–33
	5.4.2 Program Format		5–33
	5.4.3 Program structure		5–34
	5.4.4 Logical Names for Files		5–34
	5.4.5 PLC compatibility with TNC 415 / TNC 425		5–36
5.5 PLC Program Example			5–37
5.6 Commands			5–75
	5.6.1 Execution Times		5–75
	5.6.2 LOAD (L)		5–77
	5.6.3 LOAD NOT (LN)		5–79
	5.6.4 LOAD TWO'S-COMPLEMENT (L–)		5–81
	5.6.5 LOAD BYTE (LB)		5–82
	5.6.6 LOAD WORD (LW)		5–82
	5.6.7 LOAD DOUBLEWORD (LD)		5–82
	5.6.8 ASSIGN (=)		5–84
	5.6.9 ASSIGN BYTE (B=)		5–86
	5.6.10 ASSIGN WORD (W=)		5–86
	5.6.11 ASSIGN DOUBLEWORD (D=)		5–87
	5.6.12 ASSIGN NOT (=N)		5–88
	5.6.13 ASSIGN TWO'S COMPLEMENT (=-)		5–88
	5.6.14 SET (S)		5–89
	5.6.15 RESET (R)		5–90
	5.6.16 SET NOT (SN)		5–91
	5.6.17 RESET NOT (RN)		5–92
	5.6.18 AND (A)		5–93
	5.6.19 AND NOT	(AN)	5–95
	5.6.20 OR (O)		5–97
	5.6.21 OR NOT	(ON)	5–99
	5.6.22 EXCLUSIVE OR (XO)		5–101
	5.6.23 EXCLUSIVE OR NOT (XON)		5–103
	5.6.24 ADDITION (+)		5–105
	5.6.25 SUBTRACTION (–)		5–106
	5.6.26 MULTIPLICATION (x)		5–107
	5.6.27 DIVISION	(/)	5–108
	5.6.28 REMAINDER (MOD)		5–109
	5.6.29 INCREMENT (INC)		5–110
	5.6.30 DECREMENT (DEC)		5–110
	5.6.31 EQUAL TO (==)		5–111
	5.6.32 LESS THAN (<)		5–112
	5.6.33 GREATER THAN (>)		5–113
	5.6.34 LESS THAN OR EQUAL TO (<=)		5–114
	5.6.35 GREATER THAN OR EQUAL TO (>=)		5–115

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	5.6.36 UNEQUAL (<>)							5–116
	5.6.37 AND [ ] (A[ ])							5–117
	5.6.38 AND NOT [ ]	(AN[ ]						5–117
	5.6.39 OR [ ] (O[ ])							5–117
	5.6.40 OR NOT [ ]	(ON[ ])						5–117
	5.6.41 EXCLUSIVE OR [ ] (XO[ ])							5–118
	5.6.42 EXCLUSIVE OR NOT [ ] (XON[ ])							5–118
	5.6.43 ADD [ ] (+[ ])							5–120
	5.6.44 SUBTRACT [ ]		(–[ ])					5–120
	5.6.45 MULTIPLICATION [ ] (x[ ])							5–120
	5.6.46 DIVISION [ ]	(/[ ])						5–120
	5.6.47 REMAINDER [ ] (MOD[ ])							5–121
	5.6.48 EQUAL TO [ ]		(==[ ])					5–123
	5.6.49 LESS THAN [ ]		(<[ ])					5–123
	5.6.50 GREATER THAN [ ] (>[ ])							5–123
	5.6.51 LESS THAN OR EQUAL TO [ ]			(<=[ ])				5–123
	5.6.52 GREATER THAN OR EQUAL TO [ ] (>=[ ])							5–124
	5.6.53 NOT EQUAL TO [ ] (<>[ ])							5–124
	5.6.54 SHIFT LEFT	(<<)						5–126
	5.6.55 SHIFT RIGHT		(>>)					5–127
	5.6.56 BIT SET (BS)							5–128
	5.6.57 BIT RESET	(BC)						5–129
	5.6.58 BIT TEST (BT)							5–130
	5.6.59 Load Data onto the Data Stack			(PS)				5–131
	5.6.60 Acquire Data from the Data Stack (PL)							5–132
	5.6.61 Load Logic Accumulator onto the Data Stack					(PSL)		5–132
	5.6.62 Load Word Accumulator onto the Data Stack					(PSW)		5–133
	5.6.63 Acquire Logic Accumulator from the Data Stack						(PLL)	5–133
	5.6.64 Acquire Word Accumulator from the Data Stack						(PLW)	5–133
	5.6.65 Unconditional Jump (JP)							5–135
	5.6.66 Jump if Logic Accumulator = 1			(JPT)				5–135
	5.6.67 Jump if Logic Accumulator = 0			(JPF)				5–136
	5.6.68 Call Module	(CM)						5–137
	5.6.69 Call Module if Logic Accumulator = 1				(CMT)			5–137
	5.6.70 Call Module if Logic Accumulator = 0				(CMF)			5–138
	5.6.71 End of Module, Program End			(EM)				5–139
	5.6.72 End of Module if Logic Accumulator = 1 (EMT)							5–139
	5.6.73 End of Module if Logic Accumulator = 0 (EMF)							5–139
	5.6.74 Jump Label	(LBL)						5–139
5.7 INDEX Register								5–144

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	5.8 Commands for STRING Execution					5–146
		5.8.1 LOAD	(L)			5–147
		5.8.2 ADD	(+)			5–147
		5.8.3 Storing a STRING (=)				5–147
		5.8.4 Overwriting of a STRING (OVWR)				5–148
		5.8.5 Logical Comparisons in STRING Execution				5–149
		5.8.6 EQUAL TO		(==)		5–149
		5.8.7 LESS THAN		(<)		5–149
		5.8.8 GREATER THAN (>)				5–149
		5.8.9 LESS THAN OR EQUAL TO (<=)				5–150
		5.8.10 GREATER THAN OR EQUAL TO			(>=)	5–150
		5.8.11 UNEQUAL		(<>)		5–150
		5.8.12 Modules for String Execution				5–152
	5.9 Submit Programs					5–153
		5.9.1 Call up of the Submit Program (SUBM)				5–153
		5.9.2 Status Interrogation of a Submit Program (RPLY)				5–154
		5.9.3 Cancellation of a Submit Program			(CAN)	5–154
	5.10 Cooperative Multitasking1)					5–156
		5.10.1 Starting a Parallel Process				5–156
		5.10.2 Control of Events				5–157
	5.11 Constants Field (KF)					5–164
	5.12 Program Structures					5–164
		5.12.1 IF ... ELSE ... ENDI Structure				5–165
		5.12.2 REPEAT ... UNTIL Structure				5–165
		5.12.3 WHILE ... ENDW Structure				5–166
		5.12.4 CASE Branch				5–166
	5.13 Linking Files					5–168
		5.13.1 USES Instruction				5–168
		5.13.2 GLOBAL Instruction				5–169
		5.13.3 EXTERN Instruction				5–170
	5.14 PLC Modules					5–176
		5.14.1 Markers, Bytes, Words, Doublewords				5–176
		5.14.2 Number Conversion				5–179
6 Data Interfaces						6–1
	6.1 Introduction					6–1
		6.1.1 Principles of Data Transfer				6–2
		6.1.2 Handshaking				6–7
	6.2 TNC Data Interfaces					6–8
		6.2.1 General				6–8
		6.2.2 RS-232-C/V.24 Interface				6–8
		6.2.3 RS-422/V.11 Interface				6–10
		6.2.4 Saving/Reading Files				6–12

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6.3		Configuration of Interfaces		6–14
			6.3.1 Selection of Interfaces	6–14
			6.3.2 Freely Configurable Interfaces	6–15
6.4		Data Transmission Protocols		6–19
			6.4.1 Standard Transmission Protocol	6–19
			6.4.2 Data Transfer with Block Check Character	6–23
			6.4.3 LSV2 Protocol	6–30
6.5		Data Transfer by PLC		6–31
			6.5.1 Settings	6–31
			6.5.2 PLC Modules	6–31
	6.6	External Programming		6–38
6.7		Error Messages		6–39
			6.7.1 TNC Error Messages	6–39
			6.7.2 Error Codes for HEIDENHAIN Peripherals	6–40
6.8		Ethernet Interface (Option)		6–42
			6.8.1 Hardware	6–42
			6.8.2 Software	6–42
7 Original Equipment Manufacturer's (OEM) Cycles				7–1
	7.1	HEIDENHAIN Standard Cycles		7–1
	7.2	CycleDesign		7–1
	7.3	Application of OEM Cycles		7–1
7.4		Compatibility with “Old” OEM Cycles		7–4
8 Appendix				8–1
8.1		Error Messages		8–1
8.2		Tables		8–7
			8.2.1 Seven-Bit ASCII Code	8–7
			8.2.2 Powers of Two	8–11
8.3		Dimensions		8–12
			8.3.1 LE 426 PB, LE 430 PA	8–12
			8.3.2 LE 426 CB, LE 430 PA	8–13
			8.3.3 TE 420	8–14
			8.3.4 MB 420	8–15
			8.3.5 BC 120	8–16
			8.3.6 BF 120	8–17
			8.3.7 PL 410 B	8–18
			8.3.8 Adapter Block for Data Interface	8–19
			8.3.9 Electronic Handwheels	8–20
			8.3.10 Touch Probe Systems	8–26
	8.4	Grounding Diagram		8–31
	8.5	Basic Circuit Diagram: Motor Control with TNC 426 PB, TNC 430 PA		8–33
8.6		Block Diagram TNC 426 PB, TNC 430 PA		8–35

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	8.7 Cable Overview		8–37
		8.7.1 TNC 426	8–37
		8.7.2 TNC 430	8–39
9 Machine Parameters			9–1
	9.1 What is a Machine Parameter?		9–1
	9.2 Input and Output of Machine Parameters		9–2
		9.2.1 Input Format	9–2
		9.2.2 Activating the Machine Parameter Settings	9–3
		9.2.3 Changing the Input Values	9–3
	9.3 List of Machine Parameters		9–7
		9.3.1 Encoders and Machine	9–7
		9.3.2 Positioning	9–14
		9.3.3 Operation with Velocity Feedforward	9–17
		9.3.4 Operation with Servo Lag	9–18
		9.3.5 Integral Speed and Current Control (Digital Axes Only)	9–19
		9.3.6 Spindle	9–24
		9.3.7 Integral PLC	9–27
		9.3.8 Configuration of Data Interfaces	9–29
		9.3.9 3-D Touch Probe	9–30
		9.3.10 Digitizing with TS (Available Only with Digitizing Option)	9–32
		9.3.11 Digitizing with Measuring Touch Probe (Available Only with Digitizing Option)	9–33
		9.3.12 Tool Measurement with TT	9–34
		9.3.13 Tapping	9–38
		9.3.14 Display and Operation	9–39
		9.3.15 Colors	9–45
		9.3.16 Machining and Program Run	9–48
		9.3.17 Hardware	9–54
		9.3.18 Second Spindle	9–58
10 List of Markers and Words			10–1
	10.1 List of Markers		10–1
	10.2 List of Words		10–7
11 List of Modules			11–1
12 Subject Index			12–1

October 98

Contents

TNC 426 B, TNC 430

11

1 Update Information No. 6

The following NC software has been released:

NC Software	Date of release
280 472 05	11/97	Export-Version:	280 473 05

Improvements:

∙On the TNC 426 PB without spindle DSP (from hardware version xxx xxx 4x) the maximum spindle speed was increased from 9000 rpm to 12 000 rpm.

∙On the TNC 426 PB with spindle DSP and the TNC 430 PA (from hardware version xxx xxx 4x) the maximum spindle speed was increased from 15 000 rpm to 24 000 rpm.

∙Module 9135 has been introduced:

The infrared touch probe TS 630 can be switched on by the PLC. If the touch probe does not report readiness while M4056 is set, the feed rate enable is reset (previously: NC stop). Call:

CM 9135

M4203=	0: no error during module execution
	1: error during module execution

∙MP3210.x extended:

Input range (S analog voltage or motor revolutions) increased to 100.000

∙D364 (nominal speed) and D368 (actual speed) have been added, since speeds greater than 32767 rpm cannot be represented in the words W320 (nominal speed) and W322 (actual speed).

∙In the print masks of the touch probe cycles, it is now possible to distinguish between languages by means of code words. The text block defined in MP7230.0 is output.

Language code word	Dialog language
L_ENGLISH	0	= English
L_GERMAN	1	= German
L_CZECH	2	= Czech
L_FRENCH	3	= French
L_ITALIAN	4	= Italian
L_SPANISH	5	= Spanish
L_PORTUGUE	6	= Portuguese
L_SWEDISH	7	= Swedish
L_DANISH	8	= Danish
L_FINNISH	9	= Finnish
L_DUTCH	10 = Dutch
L_POLISH	11 = Polish
L_HUNGARIA	12 = Hungarian
L_ALL	Language-neutral texts

∙Code number for LOGBOOK has been added:

The data from the log can be transferred to an ASCII file. The user must specify a file name and the time at which the data transfer is to begin. The log contains the most recent keystrokes, control resets, error messages and the register status in case of blinking error messages.

December 97 Update Information No. 6

TNC 426 B, TNC 430

1–1

·MP7471 has been added:

Maximum speed of linear axes for compensating movements caused by the positioning of angular axes with M128.

·New machine parameters for new touch probe cycle (CALIBRATE TS):

MP6180.0-2, MP6181.0-2 and MP6182.0-2: Approximate position of the ring gauge center (X, Y and Z in REF coordinates for three traverse ranges)

Input: –99 999.9999 to +99 999.9999 [mm]

MP6185: Distance below the upper edge of the ring gauge to be probed during calibration. Input: 0.001 to 99 999.9999 [mm]

·FN18:SYSREAD has been expanded:

It is now possible to determine whether a datum table is selected in the current operating mode. ID505

NR1

0= no datum table selected

1= datum table selected

·FN18: SYSREAD has been expanded:

It is now possible to determine whether the addressed MP exists. ID1010

NRxxxx MP number IDXxxxx MP index

0= MP does not exist

1= MP exists

NC software	Date of release
280 472 06	12/97	Export version:	280 473 06

Improvements:

·New touch probe cycles. These cycles are defined like the fixed cycles via the TOUCH PROBE key and soft keys. All touch probe system functions are now described in a separate manual:

User's Manual touch probe cycles

– German 329203 10

–English 329203 20

·Three new markers for workpiece measurement:

	Set	Reset
M4065: All dimensions of the workpiece are OK	NC	PLC
M4066: Workpiece needs rework	NC	PLC
M4067: Workpiece must be scrapped	NC	PLC

·Timers T96 to T143 have been added:

The new timers can be started only through Module 9006. The timer is set immediately after module call and reset after expiration of the run time.

·FN17:SYSWRITE has been expanded:

The touch probe monitoring can be switched on and off. ID990

NR2 = numerical value

Numerical value = 0 touch probe monitoring off Numerical value ¹ 1 touch probe monitoring on

·FN17:SYSWRITE has been expanded:

The touch probe data of the manual probing cycles are transferred to the tool table. ID990

NR3 = Qxxx or any numerical value

1–2

TNC 426 B, TNC 430 Update Information No. 6

December 97

∙FN17:SYSWRITE has been expanded:

A point in the working plane (i.e., the plane perpendicular to the tool axis) of the workpiece coordinate system can be transformed into the corresponding plane of the machine coordinate system and vice versa, whereby the corresponding plane of the machine coordinate system is the plane whose normal vector has the designation of the tool axis.

ID990

NR4

IDX 1 = Qxxx (Transformation of workpiece coordinate system to machine coordinate system)

2= Qxxx (Transformation of machine coordinate system to workpiece coordinate system) Qxxx Number of the first of four consecutive Q parameters

1.Q parameter: Coordinate of the 1st axis of the point to be transformed

2.Q parameter: Coordinate of the 2nd axis of the point to be transformed

3.Q parameter: Coordinate of the 1st axis of the transformed point

4.Q parameter: Coordinate of the 2nd axis of the transformed point

December 97 Update Information No. 6

TNC 426 B, TNC 430

1–3

1	Update Information No. 5
1.1	NC Software
HEIDENHAIN has released a new NC software:
NC software		Release
280 472 04		10/97	Export version:	280 473 04
Improvements:

∙Code words LSV2TIME0 to LSV2TIME2 are new

∙Module 9038 was expanded by transfer value –1

∙DR2 can now be defined in the TOOL CALL block

∙Spindle DSP limits max. torque to 2.5 ∙ rated torque

1.2 Hardware

The maximum input frequency of the position encoder inputs X1 to X5 was reduced to 50 kHz for 1 VPP signals. You will find the new ID numbers on page 3-10. Changeover date will be end of December 1997. We will still provide the old logic units with unchanged input frequency under the old ID numbers upon special request.

1.3 Documentation

Various changes were made to the Technical Manual. The list on the next 3 pages gives an insight into what changes were made, and where the information can be found.

November 97 Update Information No. 5

TNC 426 B, TNC 430

1–1

1 Update Information No. 4

With Update Information No. 3 you received completely new pages for your TNC 426 B / TNC 430 Technical Manual. Since then the following changes have been made to the software.

1.1 NC Software 280 472

NC Software	Release
280 472 01	6/97	Export version:	280 473 01
NC Software	Release
280 472 02	7/97	Export version:	280 473 02

∙MP6500 expanded: Bit 9 reserved

Bit 10 probing routine (Bit 8 = 1)

0= The starting point is pre-positioned in all three principle axes.

1= The starting point is pre-positioned only in the tool axis and in the axis of the probing direction (MP6505).

Bit 11 Checking the tool and adjusting the tool table

0= After "tool checking" the tool table is adjusted.

1= After "tool checking" the tool table is not adjusted.

∙MP7500 expanded:

Bit 3 Setting the datum in a tilted coordinate system

0= Datum setting is possible in tilted coordinate system.

1= During datum setting the current positions of the tilting axes are not offset.

NC Software	Release
280 472 03	8/97	Export version:	280 473 03

∙MP7680 expanded:

Bit 10 see item 1.1.2 "Optimization of Tool-Radius-Compensated Outside Corners."

∙The software also runs on the old hardware of the LE 426 CB/PB and LE 430 CA/PA, however with less feature content.

1.1.1 Nominal Position Value Filter

For optimum adjustment of the velocity and acceleration the nominal position values are filtered. This results in smoother (jerk-limited) traverse. The TNC calculates the filter parameters weighting and width (order) using the permissible axis-specific jerk and the tolerance. The filter is effective in all operating modes. For rigid tapping (Cycle 17) the nominal position value filter is automatically switched off.

With MP1095 you can select whether the TNC uses a single or double filter. The single filter causes a linear change in acceleration and therefore a step in the jerk.

With Cycle 32 the user can overwrite the tolerance defined in MP1096 for contour transitions. Cycle 32 was renamed to "fast contour milling" because the nominal position value filter is effective not only for 3-D contours.

November 97 Update Information No. 4

TNC 426 B, TNC 430

1–1

MP1095	Nominal position value filter
Input:	0	= single filter
	1	= double filter
	Suggested input value = 0
MP1096	Tolerance
Input:	0	= no nominal position value filter
	0.001 to 3.000 [mm] = permissible tolerance at contour transitions
MP1097	Axis specific jerk for single filters (MP1096 = 0)
Input:	1 to 1 000 [m/s³]
MP1097.0-8 Axis 1 to axis 9
MP1098	Axis specific jerk for double filters (MP1096 = 1)
Input:	1 to 1 000 [m/s³]

	Suggested input value = 2 ∙ MP1097.x
MP1098.0-8 Axis 1 to axis 9
MP1099	Minimum filtering order
Input:	0 to 20

MP1099.0 Minimum filtering order for single filters (MP1096 = 0)

Suggested input value = 5

MP1099.1 Minimum filtering order for double filters (MP1096 = 1)

Suggested input value = 3

Commissioning

Determine minimum filtering order. Suggested input values: MP1099.0 = 5, MP1099.1 = 3

Switch off the nominal position value filter (MP1096 = 0).

Determine MP1090.x, MP1092, MP1510.x as described on page 4-318/4-319. Enter the optimum jerk values for each axis MP1097.x.

In MP1098.x enter twice the value from MP1097.x.

Define the tolerance in MP1096 (e.g. 0.02 mm)

1.1.2 Optimization of Tool-Radius-Compensated Outside Corners

With MP7680, bit 10 you set whether a circular arc or a spline should be inserted for the tool center path at tool-radius-compensated outside corners. Inserting a spline has the advantage of limiting the jerk at the corners and, when the nominal position value filter (MP1096 > 0) is active, of milling the corners more precisely.

MP7680	Machines parameters with multiple function
Input:	%xxxxxxxxxxx
Bit10	Tool-radius-compensated outside corners
	0	= Insert a circular arc
	1	= Insert a spline curve

Suggested input value = %1xxxxxxxxxx

1–2

TNC 426 B, TNC 430 Update Information No. 4

November 97

1.1.3 New Backlash Compensation

A new type of backlash compensation is effective beginning with NC software 280 470 08 and 280 472 01. Unlike the backlash compensation possible with MP710, you can compensate the

backlash in the entire controlled system with MP750 and MP752. This means that you can now also compensate play between the motion of the motor and the table with position measurement via linear encoders. This feature also compensates the reversal spikes resulting from circular traverse, and the machine parameters MP711 to MP716 are therefore no longer needed.

In MP750 you enter the backlash in mm. In MP752 you enter the time within which the compensated distance should be traversed.

Example:

MP750 = 0.03 mm, MP752 = 15 ms

For every reversal in axis direction, for 15 ms a nominal speed command signal is output corresponding to a feed rate of 120 mm/min (0.03 mm / 15 ms = 0.002 m/s = 120 mm/min).

MP750	Backlash
Input:	–1.0000 to +1.0000 [mm]
MP750.0-8 Axis 1 to axis 9
MP752	Compensation time for value from MP750.x
Input:	0 to 1000 [ms]

MP750.0-8 Axis 1 to axis 9

Commissioning

Enter the following test program: LBL 1

L X100 R0 F10 L X0

CALL LBL 1 REP 100/100

With the internal oscilloscope, record ACTL.SPEED and V (ACT RPM)

At the reversal point the actual feed rate lags behind the actual RPM with the time delay t.

Input values:	MP750	= t ∙ ACTL.SPEED
	MP752	= approx. 20 ms (optimum value determined empirically with this test)

1.1.4 Other Changes in the Technical Manual

∙MP7460 (constant contouring speed at corners) has been replaced by MP1096 (tolerance), pages 4-77, 9-45.

∙MP1091 (Jerk limiting for 3-D milling with Cycle 32) will not be introduced, pages 4-62, 4-78, 9-13.

∙Module 9037 (read general axis information) was renamed to Module 9038, pages 4-7, 11-1.

November 97 Update Information No. 4

TNC 426 B, TNC 430

1–3

1.2 NC Software 280 470

NC Software	Release
280 470 08	5/97	Export version:	280 471 08

∙Hungarian dialog added

∙D760 (Offset for tilting axes, probe center offset) added

∙MP750 and MP752 (backlash compensation) added

∙MP3143 expanded:

3 = same as input value 1, except that the second reference mark is evaluated first.

NC Software	Release
280 470 09	6/97	Export version:	280 471 09

∙MP6500 expanded: Bit 9 reserved

Bit 10 probing routine (bit 8 = 1)

0 = The starting point is pre-positioned in all three principle axes.

1 = The starting point is pre-positioned only in the tool axis and the axis for the probing direction (MP6505).

Bit 11 Checking the tool and adjusting the tool table 0 = After "tool checking" the tool table is adjusted.

1 = After "tool checking" the tool table is not adjusted.

NC Software	Release
280 470 10	7/97	Export version:	280 471 10

1–4

TNC 426 B, TNC 430 Update Information No. 4

November 97

1 Update Information No. 3

HEIDENHAIN released the new NC software 280 472 01 in June 1997. This software will only run on logic units with Id. Nr. xxx xxx 4x.

The new functions (listed below) and the changes in hardware are described in detail in the new Technical Manual (English version not yet available).

Conditions of delivery

As of June 1997 HEIDENHAIN will only supply the new hardware (Id. Nr. xxx xxx 4x). The NC software 280 480 runs on this new hardware as of version 06. For the present the new software (Id. Nr. 280 472 xx) will be supplied only where expressly ordered. As of September 1997 the old NC software will no longer be delivered.

NC software	Release
280 472 01	6/97	Export version:	280 473 01
Improvements				Technical	User's
				Manual	Manual
New function "3-D milling": Cycle 32 or G62 and MP1091.x				4–78	213
Automatic calculation of cutting data				4–255	92
TCPM (Tool Center Point Management): With M128 you can				–	151
superimpose manual axis traverse during program run. Misalignments
in the tilting axes are then automatically compensated.
Additional information with HELP key				4–154	64
Input menu for fixed input values can be selected with the GOTO key				–	326
(e.g. baud rate)
New pallet management				4–174	65
Freely-definable tables				4–178	95
You can select between standard and enhanced file management with				–	330
the MOD function PGM MGT
The positions of all nine axes are shown in the status display. The				–	5
spindle position overwrites the ninth axis
Copying progress is shown in a superimposed window				–	35
The number of Q parameters was increased from 299 to 399				–	250
Q parameters also permissible in FK blocks				–	125
M110 also effective in contour pocket cycle				–	146
Cycle 204: Counterbore back				–	163
With MP7682 Bit 2 you can set whether rotary axes should always be				4–124	148
positioned by the shorter path
A chamfer feed rate can be entered in the NC block "Chamfer" (CHF)				–	109

November 97 Update Information No. 3

TNC 426 B, TNC 430

1–1

Improvements	Technical	User's
	Manual	Manual
Cycle 19 "Machining plane" was expanded by the parameters feed rate	4–29	227
and setup clearance (only when the tilting axes are positioned with
Cycle 19. This is set in MP7500)
M114 can also be used with non-controlled or PLC axes	4–34	150
Hungarian as additional conversational language	4–189	344
All soft keys appear in the set conversational language	–	–
Language-dependent soft keys for OEM cycles	–	–
The soft keys for FK programming only appear once you press the FK	–	126
key
Soft key F for feed rate in the manual operating modes	4–127	17
New soft key: INCREMENT OFF/ON	4–242	17
New soft key: HIDE TOOLS OFF/ON: the only tools shown in the tool	–	74
table are those in the tool magazine
New soft keys for copying fields in the tool table	–	74
PLC soft keys can be added to NC soft-key rows	4–151	–
Ethernet: the name of a network printer can be given	6–40	–
The probe results of the manual probing function can be taken over	–	293
immediately in the datum tables
MP6170, MP6171: Multiple measurement with measuring tolerance	4–207	305
A separate block of calibration data for TS and TT for every traverse	4–206	–
range
With MP6500 Bit 4 you can set whether or not speed should be	4–227	–
limited to 1000 rpm during tool measurement with TT
MP6500 Bit 9: Automatic determination of the basic rotation for	4–227	–
cubical probe contacts
W760: Angular offset of the tilting axes for automatic adjustment of	4–207	–
the touch probe center offset
The TS calibration data can be stored in the tool table using soft key	–	297
Cycles 31 to 33 (Tool measurement) were expanded by the input field	–	87
"Q parameters for result"
With MP6500 Bit 5 and Bit 6 you can define how to proceed if tool	4–227	–
breaks
FN17, FN18 ID990 NR1 Programmed probing	5–13	–
FN17: ID210 NR6 Tilting the working plane during program run	5–13	–
active/inactive
FN18 ID350 Enhanced touch probe data	5–20	263

1–2

TNC 426 B, TNC 430 Update Information No. 3

November 97

Improvements	Technical	User's
	Manual	Manual
FN23: CDATA Calculating the circle center from 3 touch points	–	255
FN24: CDATA Calculating the circle center from 4 touch points	–	255
FN25: Setting the datum	4–117	–
ISO: Cycles with a number ³ 200 can be programmed with graphic	–	–
support (also OEM cycles)
ISO: Cycles G75 and G76 (Rectangular pocket) were expanded by the	–	–
input field "corner radius"
ISO: Parameter H (max. permissible angle) can be entered after M112	–	–
ISO: G60 Running digitized data is new	–	–
MP2000 was removed. Digital axes can be defined in MP120	4–6	–
In the compensation value tables COM and CMA you can use soft	4–17	–
keys to select the columns for the desired axes
Non-linear axis error compensation: Max. number of compensation	4–16	–
points increased from 640 to 1280
A formula can be input in MP2020 (Distance covered in one motor	4–81	–
revolution)
MP2541, MP2551: Frequency filter for spindle	4–114	–
The number of tools in the tool table was increased from 254 to	4–248	71
65 535
M4014: Reversing the count direction of the linear encoder for the	4–97	–
spindle
Cooperative multi-tasking in the PLC (SPAWN command)	5–156	–
Module 9019: Check program storage	5–34	–
Oscilloscope recordings can be stored in a file.	4–305	–

If you are using OEM cycles, you need to create a new cycle structure with CycleDesign to be able to program the new HEIDENHAIN cycles 32 and 204. You will need the CycleDesign software version 1.21

November 97 Update Information No. 3

TNC 426 B, TNC 430

1–3

New hardware

Since February 1997 HEIDENHAIN has been delivering a new hardware for the LE 426 B and LE 430.

The advantages of the new hardware:

∙3-row VGA connector for BC 120. With the new connecting cable Id. Nr. 312 878 .. there is no longer need for an adapter connector

∙Internal working memory doubled (4 MB)

∙More memory space available on larger hard disk (1.5 GB)

∙LE 426 PB and LE 430 PA: Three current controllers. Maximum speed = value from Siemens

data sheet

The NC software 280 470 runs on this new hardware as of version 06.

The full benefit of its new range of features can only be seen however if the new hardware is used together with the new NC software 280 472 as of version 01.

LE 426 PB with digital spindle to 15 000 rpm

As an option the LE 426 PB is supplied for digital spindles with up to 15 000 rpm. See pages 2–10 and 3–10 in the new Technical Manual.

1–4

TNC 426 B, TNC 430 Update Information No. 3

November 97

2 Introduction

2.1 Integrated Current Control

HEIDENHAIN contouring controls are designed for integration in milling, drilling and boring machines as well as machining centers.

The TNC 426 PB / TNC 430 PA has integral drive controllers; these control the drive amplifier by means of Pulse Width Modulated (PWM) signals.

Integration of the drive controllers in the TNC 426 PB / 430 PA offers the following advantages:

∙All the software is contained centrally in the NC; this means that the individual components of the NC such as feed axes, spindle, NC or PLC are optimally matched.

∙High control quality, because the position control, speed control and current control are combined into one unit.

∙For commissioning, optimization and diagnosis, the same functions are available both for the feed drive and the main spindle.

The TNC 426 PB can control machines with up to five axes and spindle speeds up to 9000 rpm, option: 15 000 rpm (spindle speeds are valid for motors with two pole pairs). Powerful microprocessor hardware and an integrated hard disk with 900 MB guarantee almost unlimited NC memory and a short processing time — even for long programs. These are ideal preconditions for tool and mold construction.

The TNC 430 PA supports six digitally controlled NC axes and three analog controlled secondary axes, as well as digitally controlled spindle speeds up to 15 000 rpm (for motors with two pole pairs).

Control concept of the TNC 4xx PA

The TNC 426 CB is the version of the TNC 426 that is equipped with analog speed command interface and can control machines with up to five axes plus spindle.

The TNC 430 CA also has analog speed command interface for machines with up to eight axes plus spindle. A ninth axis can be controlled with an additional PCB.

November 97 Integrated Current Control

TNC 426 B, TNC 430

2–1

2.2 Brief Description

Technical Data	TNC 426	TNC 430
Basic model with integral drive All position encoder and motor encoder inputs 1 VPP
control
	TNC 426PB:	TNC 430 PA:
	5 axes plus spindle	•	5 axes plus spindle
	(max. 9000 rpm, option:		(max. 15000 rpm) with
	15 000 rpm) with position		position encoder and motor
	encoder and motor encoder		encoder inputs
	inputs.	•	6th axis with motor encoder
			input
Basic model with analog speed	All position inputs 1 VPP
command interface
	TNC 426CB:	TNC 430CA:
	5 axes plus spindle	8 axes plus spindle
Options	Position inputs for the axes:	–
	11 µAPP
	–	TNC 430CA:
		Position input for 9th axis
		TNC 430PA:
		•	Position inputs for 3
			additional axes with analog
			speed command interface
		•	Position input for 6th axis

•Digitizing with 3-D triggering touch probe

•Digitizing with 3-D measuring touch probe

•Ethernet interface

Display		15-inch CRT color monitor
Program memory		Hard disk with 900 MB
Input precision and		Up to 0.1 µm for linear axes
display step		Up to 0.0001° for angular axes
Interpolation
	Straight lines	5 of 5 axes	5 of 9 axes
	Circular arcs	2 of 5 axes;	2 of 9 axes;
		3 of 5 axes with tilted	3 of 9 axes with tilted
		working plane	working plane
	Helices	Combination of circular and linear motion
	Spline	–	Cubical splines can be input
Block processing time		From the hard disk: 4 ms

2–2

TNC 426 B, TNC 430 Brief Description

November 97

Machine Integration

TNC 426

TNC 430

Control

Integral drive control

TNC 426PB

TNC 430PA

Analog speed command

TNC 426CB

TNC 430CA

interface

Position loop resolution

Signal period

1024

Cycle time: path

3 ms

interpolation

Cycle time: speed

TNC 426PB, TNC 430PA: 0.6 ms

Feed rate

TNC 426PB, TNC 430PA:

18 000

∙ Screw pitch

1

No. pole pairs

min

TNC 426 CB, TNC 430CA: Up to 60

m

for encoders with

min

20 µm grating period

Up to 300

m

for encoders with

min

100 µm grating period

Speed

TNC 426PB (standard):

18 000

1

No. pole pairs min

TNC 426PB (option), TNC 430PA:

30 000

1

No. pole pairs min

1

TNC 426 CB, TNC 430CA:

100 000

min

Error compensation

Linear / non-linear axis error, backlash, reversal spikes during

circular movements, offset, thermal expansion, stiction,

sliding friction

Integrated PLC

PLC memory

Hard disk

Main memory (RAM)

128 KB (approx. 16000 commands)

PLC cycle time

21 ms

PLC inputs 24 Vdc

56 (additional inputs as option: see PL 410B)

PLC outputs 24 Vdc

31 (additional outputs as option: see PL 410B)

Analog inputs ±10 V

3 (additional analog inputs as option: see PL 410B)

Analog outputs ±10 V

TNC 426 PB:

13

TNC 430 PA: 13

TNC 430CB:

7 (with 5 NC

TNC 430 CA: 3 (with 9 NC

axes + spindle)

axes + spindle)

Inputs for thermistors

3 (additional inputs as option: see PL 410B)

Commissioning aids

•

Oscilloscope

•

Trace function

Data interfaces

•

One each RS-232-C/ V.24 and RS-422/ V.11 up to 115 kbaud

•Expanded data interface with LSV2 protocol for external operation of the TNC

•Option: Ethernet interface, approx. 200 to 1000 kilobaud

November 97 Brief Description

TNC 426 B, TNC 430

2–3

User Functions	TNC 426			TNC 430
Programming	HEIDENHAIN plain language and ISO
Position data	Nominal positions for straight lines and circular arcs in Cartesian
	or polar coordinates, absolute or incremental dimensional data,
	display and entry in mm and inches
Contour approach and departure	•	Via straight line: tangential or perpendicular (APPR/DEP),
	•	Via circular arc (APPR-/DEP)
	•	Via rounding radius (RND)
Tool compensation	•	Tool radius in the working plane and tool length
	•	Radius-compensated contour look ahead for up to 99 blocks
		(M120)
Cutting data tables	For the automatic calculation of speed and feed rate from
	various definable cutting/workpiece material combinations
Constant contouring speed	•	Relative to the tool's center point path
	•	Relative to the tool's cutting edge (M109, M110, M111)
3-D machining	•	Insertion of rounding radius between two straight line
		segments (M112, M113, M124)
	•	Feed rate reduction during plunging (M103)
	•	3-D tool compensation through surface normal vectors
	•	Automatic compensation of machine geometry when
		working with tilted axes (M114, M115, M128, M130)
	•	Changing the position of the swivel head with the electronic
		handwheel during program run. The position of the tool tip
		does not change.
	•	Jolt reduction
	•	Spline
Machining with rotary tables	•	Programming of cylindrical contours
	•	Feed rate in mm/min (M116)
FK free contour programming	FK free contour programming in HEIDENHAIN plain language
	with graphic support for workpiece drawings not dimensioned
	for NC
Subprogramming	Program section repeats, subprograms, program calls
Background	Creating programs while another program is being run, also with
programming	graphic support
Fixed cycles	•	Peck drilling, tapping with or without a floating tap holder,
		reaming, boring, hole patterns, slot milling, rectangular and
		circular pocket milling, multipass milling of plane surfaces
	•	OEM cycles (special cycles developed by the machine tool
		builder) can also be integrated.
	•	Contour pockets – also contour-parallel
	•	Contour train

Coordinate transformation • Datum shift, rotation, mirror image

•Scaling factor (axis specific)

•Tilting the working plane

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TNC 426 B, TNC 430 Brief Description

November 97

User Functions	TNC 426			TNC 430
Q parameters; programming	•	Mathematical functions =, +,–, *, ¸, sin a, cos a,
with variables		angle a from sin a and cos a,		a, a² + b²
	• Logical comparisons (=, ¹, <, >)
	•	Parentheses
	•	tan a, arc sin, arc cos, arc tan, an, en, ln, log, absolute value
		of a number, constant p, negation, truncation before or after
		decimal point
Programming aids	•	Pocket calculator
	•	Structuring of part programs
	•	Graphic support for the programming of cycles
Teach in	Actual positions can be transferred directly into the NC program
Test graphics	Graphic simulation before a program run:
	•	Plan view
	•	Projection in three planes
	•	3-D representation
	•	Magnification of details
Programming graphics	In the Programming and Editing operating mode, the contours of
	the NC blocks are drawn while they are being entered
	(2-D pencil-trace graphics)
Program run graphics; display	Graphic simulation during real time machining:
modes	•	Plan view
	•	Projection in three planes
	•	3-D representation
Machining time	•	Calculation of machining time in the Test Run operating
		mode
	•	Display of the current machining time in the program run
		modes
Returning to the contour	•	Mid-program startup in any block in the program, returning
		the tool to the calculated nominal position to continue
		machining
	•	Program interruption, contour departure and reapproach
Datum tables	Several datum tables, each with 254 datums
Pallet tables	Several pallet tables with various different entries for selection
	of pallets, NC programs and datums

Export versions	TNC 426 CF, TNC 426 PF	TNC 430 CE, TNC 430 PE
Linear interpolation	4 of 5 axes	4 of 9 axes

November 97 Brief Description

TNC 426 B, TNC 430

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