Mitsubishi Electric C70 Programming Manual

Introduction

This manual is a guide for using the C70.

Programming is described in this manual, so read this manual thoroughly before starting programming. Thoroughly study

the "Precautions for Safety" on the following page to ensure safe use of this NC unit.

Details described in this manual

For items described as "Restrictions" or "Usable State" in this manual, the instruction manual issued by

the machine tool builder takes precedence over this manual.

Items not described in this manual must be interpreted as "not possible".

This manual is written on the assumption that all option functions are added.

Refer to the specifications issued by the machine tool builder before starting use.

Refer to the Instruction Manual issued by each machine tool builder for details on each machine tool.

Some screens and functions may differ depending on the NC system (or its version), and some functions

may not be possible. Please confirm the specifications before use.

CAUTION

Precautions for Safety

Always read the specifications issued by the machine tool builder, this manual, related manuals and attached documents

before installation, operation, programming, maintenance or inspection to ensure correct use.

Understand this numerical controller, safety items and cautions before using the unit.

This manual ranks the safety precautions into "DANGER", "WARNING" and "CAUTION".

Note that even items ranked as " CAUTION", may lead to major results depending on the situation. In any case,

important information that must always be observed is described.

The meanings of the pictorial signs are given below.

The following signs indicate prohibition and compulsory.

The meaning of each pictorial sign is as follows.

When the user may be subject to imminent fatalities or major injuries if handling is

mistaken.

When the user may be subject to fatalities or major injuries if handling is mistaken.

When the user may be subject to injuries or when physical damage may occur if

handling is mistaken.

This sign indicates prohibited behavior (must not do).

For example, indicates "Keep fire away".

This sign indicates a thing that is compulsory (must do).

For example, indicates "it must be grounded".

CAUTION

rotated object

CAUTION

HOT

Danger

Electric shock risk

Danger

explosive

Prohibited

Disassembly is

prohibited

KEEP FIRE AWAY

General instruction

Earth ground

DANGER

WARNING

CAUTION

Not applicable in this manual.

1. Items related to operation

If the operation start position is set in a block which is in the middle of the program and the program is

started, the program before the set block is not executed. Please confirm that G and F modal and

coordinate values are appropriate. If there are coordinate system shift commands or M, S, T and B

commands before the block set as the start position, carry out the required commands using the MDI, etc.

If the program is run from the set block without carrying out these operations, there is a danger of

interference with the machine or of machine operation at an unexpected speed, which may result in

breakage of tools or machine tool or may cause damage to the operators.

Under the constant surface speed control (during G96 modal), if the axis targeted for the constant surface

speed control (normally X axis for a lathe) moves toward the spindle center, the spindle rotation speed will

increase and may exceed the allowable speed of the workpiece or chuck, etc. In this case, the workpiece,

etc. may jump out during machining, which may result in breakage of tools or machine tool or may cause

damage to the operators.

DANGER

WARNING

1. Items related to product and manual

For items described as "Restrictions" or "Usable State" in this manual, the instruction manual issued by

the machine tool builder takes precedence over this manual.

Items not described in this manual must be interpreted as "not possible".

This manual is written on the assumption that all option functions are added. Refer to the specifications

issued by the machine tool builder before starting use.

Refer to the Instruction Manual issued by each machine tool builder for details on each machine tool.

Some screens and functions may differ depending on the NC system (or its version), and some functions

may not be possible. Please confirm the specifications before use.

2. Items related to operation

Before starting actual machining, always carry out graphic check, dry run operation and　single block

operation to check the machining program, tool offset amount, workpiece compensation amount and etc.

If the workpiece coordinate system offset amount is changed during single block stop, the new setting will

be valid from the next block.

Turn the mirror image ON and OFF at the mirror image center.

If the tool offset amount is changed during automatic operation (including during single block stop), it will

be validated from the next block or blocks onwards.

Do not make the synchronous spindle rotation command OFF with one workpiece chucked by the basic

spindle and synchronous spindle during the spindle synchronization.

Failure to observe this may cause the synchronous spindle stop, and hazardous situation.

3. Items related to programming

The commands with "no value after G" will be handled as "G00".

";" "EOB" and "%" "EOR" are expressions used for explanation. The actual codes are: For ISO: "CR, LF", or

"LF" and "%".

Programs created on the Edit screen are stored in the NC memory in a "CR, LF" format, but programs

created with external devices such as the FLD or RS-232C may be stored in an "LF" format.

The actual codes for EIA are: "EOB (End of Block)" and "EOR (End of Record)".

When creating the machining program, select the appropriate machining conditions, and make sure that

the performance, capacity and limits of the machine and NC are not exceeded. The examples do not

consider the machining conditions.

Do not change fixed cycle programs without the prior approval of the machine tool builder.

When programming the multi-part system, take special care to the movements of the programs for other

part systems.

CAUTION

Disposal

(Note)This symbol mark is for EU countries only.

This symbol mark is according to the directive 2006/66/EC Article 20 Information for end-users

and Annex II.

Your MITSUBISHI ELECTRIC product is designed and manufactured with high quality materials and

components which can be recycled and/or reused.

This symbol means that batteries and accumulators, at their end-of-life, should be disposed of separately

from your household waste.

If a chemical symbol is printed beneath the symbol shown above, this chemical symbol means that the

battery or accumulator contains a heavy metal at a certain concentration.

This will be indicated as follows:

Hg: mercury (0,0005%), Cd: cadmium (0,002%), Pb: lead (0,004%)

In the European Union there are separate collection systems for used batteries and accumulators.

Please, dispose of batteries and accumulators correctly at your local community waste collection/recycling

centre.

Please, help us to conserve the environment we live in!

Trademarks

MELDAS, MELSEC, EZSocket, EZMotion, iQ Platform, MELSOFT, GOT, CC-Link, CC-Link/LT, CC-Link IE

are either trademarks or registered trademarks of Mitsubishi Electric Corporation in Japan and/or other

countries.

Ethernet is a registered trademark of Xerox Corporation in the United States and/or other countries.

Microsoft®, Windows® are either trademarks or registered trademarks of Microsoft Corporation in the United

States and/or other countries.

CompactFlash and CF are either trademarks or registered trademarks of SanDisk Corporation in the United

States and/or other countries.

Other company and product names that appear in this manual are trademarks or registered trademarks of the

respective companies.

本製品の取扱いについて

( 日本語 /Japanese)

本製品は工業用 ( クラス A) 電磁環境適合機器です。販売者あるいは使用者はこの点に注意し、住商業環境以外で

の使用をお願いいたします。

Handling of our product

(English)

This is a class A product. In a domestic environment this product may cause radio interference in which case the

user may be required to take adequate measures.

본 제품의 취급에 대해서

( 한국어 /Korean)

이 기기는 업무용 (A 급 ) 전자파적합기기로서 판매자 또는 사용자는 이 점을 주의하시기 바라며 가정외의 지역에

서 사용하는 것을 목적으로 합니다 .

CONTENTS

1 Control Axes ................................................................................................................................................ 1

1.1 Coordinate Words and Control Axes ...................................................................................................................2

1.2 Coordinate Systems and Coordinate Zero Point Symbols ................................................................................4

2 Least Command Increments ...................................................................................................................... 5

2.1 Input Setting Unit ...................................................................................................................................................6

3 Program Formats ........................................................................................................................................ 7

3.1 Program Format .....................................................................................................................................................8

3.2 Program/sequence/block numbers; O, N............................................................................................................12

3.3 Optional Block Skip .............................................................................................................................................13

3.3.1 Optional Block Skip; / ................................................................................................................................13

3.3.2 Optional Block Skip Addition ; /n ..............................................................................................................14

3.4 G code ...................................................................................................................................................................16

3.4.1 Modal, unmodal ...........................................................................................................................................16

3.4.2 G code Lists .................................................................................................................................................16

3.4.3 Table of G Code Lists .................................................................................................................................17

3.5 Precautions Before Starting Machining .............................................................................................................21

4 Pre-read Buffers ........................................................................................................................................ 23

4.1 Pre-read Buffers ...................................................................................................................................................24

5 Position Commands ................................................................................................................................. 25

5.1 Absolute/Incremental Value Commands ; G90,G91..........................................................................................26

5.2 Radius/Diameter Designation .............................................................................................................................28

5.3 Inch/Metric Conversion ; G20,G21.......................................................................................................................29

5.4 Decimal Point Input ..............................................................................................................................................30

6 Interpolation Functions ............................................................................................................................ 35

6.1 Positioning (Rapid Traverse) ; G00 ....................................................................................................................36

6.2 Linear Interpolation ; G01.....................................................................................................................................43

6.3 Circular Interpolation ; G02,G03.........................................................................................................................46

6.4 R Specification Circular Interpolation ; G02,G03...............................................................................................50

6.5 Plane Selection ; G17,G18,G19............................................................................................................................52

6.6 Thread Cutting.......................................................................................................................................................54

6.6.1 Constant Lead Thread Cutting ; G33..........................................................................................................54

6.6.2 Inch Thread Cutting ; G33 ..........................................................................................................................58

6.6.3 Continuous Thread Cutting ; G33..............................................................................................................60

6.6.4 Variable Lead Thread Cutting ; G34 ...........................................................................................................61

6.7 Helical Interpolation ; G17,G18,G19 and G02,G03.............................................................................................63

7 Feed Functions .......................................................................................................................................... 67

7.1 Rapid Traverse Rate .............................................................................................................................................68

7.2 Cutting Feedrate ...................................................................................................................................................69

7.3 F1-digit Feed..........................................................................................................................................................70

7.4 Feed Per Minute/Feed Per Revolution (Asynchronous Feed/Synchronous Feed) ; G94,G95 .......................72

7.5 Feedrate Designation and Effects on Control Axes ..........................................................................................74

7.6 Thread Cutting Mode............................................................................................................................................79

7.7 Automatic Acceleration/Deceleration ................................................................................................................80

7.8 Rapid Traverse Constant Inclination Acceleration/Deceleration ....................................................................81

7.9 Speed Clamp .........................................................................................................................................................83

7.10 Exact Stop Check ; G09......................................................................................................................................84

7.11 Exact Stop Check Mode ; G61 ...........................................................................................................................88

7.12 Deceleration Check.............................................................................................................................................89

7.13 Automatic Corner Override ; G62......................................................................................................................93

7.14 Tapping Mode ; G63............................................................................................................................................99

7.15 Cutting Mode ; G64..........................................................................................................................................100

8 Dwell.......................................................................................................................................................... 101

8.1 Dwell (Time Designation) ; G04......................................................................................................................... 102

9 Miscellaneous Functions ....................................................................................................................... 105

9.1 Miscellaneous Functions (M8-digits) ............................................................................................................... 106

9.2 Secondary Miscellaneous Functions (A8-digits, B8-digits or C8-digits) .....................................................108

10 Spindle Functions.................................................................................................................................. 109

10.1 Spindle Functions............................................................................................................................................. 110

10.2 Constant Surface Speed Control ; G96,G97................................................................................................... 111

10.3 Spindle Clamp Speed Setting ; G92................................................................................................................ 113

10.4 Spindle/C Axis Control..................................................................................................................................... 115

10.5 Spindle Synchronization.................................................................................................................................. 120

10.5.1 Spindle Synchronization Control I ; G114.1 ......................................................................................... 121

10.5.2 Spindle Synchronization Control ll ........................................................................................................ 132

10.5.3 Precautions for Using Spindle Synchronization Control..................................................................... 137

10.6 Multiple-spindle Control................................................................................................................................... 140

10.6.1 Multiple-spindle Control I (spindle control command) ; S ○ = .......................................................... 141

10.6.2 Multiple-spindle Control I (spindle selection command) ; G43.1,G44.1............................................. 142

11 Tool Functions ....................................................................................................................................... 145

11.1 Tool Functions (T8-digit BCD) ........................................................................................................................ 146

12 Tool Compensation Functions ............................................................................................................. 147

12.1 Tool Compensation .......................................................................................................................................... 148

12.1.1 Tool Compensation Start ....................................................................................................................... 149

12.2 Tool Length Compensation............................................................................................................................. 150

12.3 Tool Nose Wear Compensation ...................................................................................................................... 152

12.4 Tool Nose R Compensation ; G40,G41,G42,G46 ........................................................................................... 153

12.4.1 Tool Nose Point and Compensation Directions ................................................................................... 155

12.4.2 Tool Nose Radius Compensation Operations ...................................................................................... 158

12.4.3 Other Operations during Tool Nose Radius Compensation ............................................................... 176

12.4.4 G41/G42 Commands and I, J, K Designation ....................................................................................... 184

12.4.5 Interrupts during Tool Nose Radius Compensation ............................................................................ 188

12.4.6 General Precautions for Tool Nose Radius Compensation ................................................................ 191

12.4.7 Interference Check .................................................................................................................................. 192

12.5 Compensation Data Input by Program ; G10 L2/L10/L11, G11..................................................................... 198

12.6 Tool Life Management II ; G10 L3, G11.......................................................................................................... 201

12.6.1 Counting the Tool Life ............................................................................................................................ 204

13 Program Support Functions ................................................................................................................ 207

13.1 Fixed Cycles for Turning Machining .............................................................................................................. 208

13.1.1 Longitudinal Cutting Cycle ; G77 .......................................................................................................... 209

13.1.2 Thread Cutting Cycle ; G78.................................................................................................................... 212

13.1.3 Face Cutting Cycle ; G79........................................................................................................................ 215

13.2 Compound Type Fixed Cycle for Turning Machining .................................................................................. 218

13.2.1 Longitudinal Rough Cutting Cycle ; G71.............................................................................................. 219

13.2.2 Face Rough Cutting Cycle ; G72 .......................................................................................................... 224

13.2.3 Formed Material Rough Cutting Cycle ; G73........................................................................................ 228

13.2.4 Finishing Cycle ; G70.............................................................................................................................. 232

13.2.5 Face Cut-Off Cycle ; G74........................................................................................................................ 233

13.2.6 Longitudinal Cut-off Cycle ; G75........................................................................................................... 235

13.2.7 Compound Thread Cutting Cycle ; G76................................................................................................ 237

13.2.8 Precautions for Compound Type Fixed Cycle for Turning Machining; G70 to G76 ........................ 241

13.3 Fixed Cycle for Drilling .................................................................................................................................... 243

13.3.1 Face Deep Hole Drilling Cycle 1 (Longitudinal deep hole drilling cycle 1) ; G83 (G87) ................... 246

13.3.2 Face Tapping Cycle (Longitudinal tapping cycle) ; G84 (G88) ........................................................... 248

13.3.3 Face Boring Cycle (Longitudinal boring cycle) ; G85 (G89) ...............................................................253

13.3.4 Deep Hole Drilling Cycle 2 ; G83.2......................................................................................................... 254

13.3.5 Fixed Cycle for Drilling Cancel; G80 ..................................................................................................... 256

13.3.6 Precautions When Using a Fixed Cycle for Drilling ............................................................................. 257

13.3.7 Initial Point and R Point Level Return ; G98,G99................................................................................. 258

13.4 Subprogram Control; M98, M99 ..................................................................................................................... 259

13.4.1 Subprogram Call ; M98,M99................................................................................................................... 259

13.5 Variable Commands ........................................................................................................................................ 265

13.6 User Macro.........................................................................................................................................................268

13.6.1 User Macro ...............................................................................................................................................268

13.6.2 Macro Call Instruction .............................................................................................................................269

13.6.2.1 Simple Macro Calls ; G65...............................................................................................................269

13.6.2.2 Modal Call A (Movement Command Call) ; G66...........................................................................272

13.6.2.3 Modal Call B (for each block) ; G66.1 ...........................................................................................273

13.6.2.4 G Code Macro Call ..........................................................................................................................274

13.6.2.5 Miscellaneous Command Macro Call (for M, S, T, B Code Macro Call) .....................................275

13.6.2.6 Detailed Description for Macro Call Instruction .........................................................................276

13.6.3 Variable .....................................................................................................................................................277

13.6.4 Types of Variables ...................................................................................................................................279

13.6.4.1 Common Variables .........................................................................................................................279

13.6.4.2 Local Variables (#1 to #33) .............................................................................................................280

13.6.4.3 Macro Interface Inputs/Outputs

(#1000 to #1035, #1100 to #1135, #1200 to #1295, #1300 to #1395) ............................................283

13.6.4.4 Tool Compensation ........................................................................................................................292

13.6.4.5 Workpiece Coordinate System Compensation

(External Workpiece Coordinate Offset) (#5201 - #532n).............................................................293

13.6.4.6 NC Alarm (#3000) ............................................................................................................................294

13.6.4.7 Integrating Time (#3001, #3002) ....................................................................................................295

13.6.4.8 Suppression of Single Block Stop and Miscellaneous Function Finish Signal Waiting (#3003)

...........................................................................................................................................................295

13.6.4.9 Feed Hold, Feedrate Override, G09 Valid/Invalid (#3004) ...........................................................296

13.6.4.10 Message Display and Stop (#3006) .............................................................................................296

13.6.4.11 Mirror Image (#3007) .....................................................................................................................297

13.6.4.12 G Command Modals (#4001-#4021, #4201-#4221) .....................................................................298

13.6.4.13 Other Modals (#4101 - #4140, #4301 - #4340) .............................................................................299

13.6.4.14 Position Information (#5001 - #5100 + n) ....................................................................................300

13.6.4.15 Number of Workpiece Machining Times (#3901, #3902) ...........................................................302

13.6.4.16 ZR device access variable ............................................................................................................303

13.6.4.17 Tool Life Management (#60000 - #63016) ...................................................................................312

13.

6

.5 Operation Commands .............................................................................................................................316

13.6.6 Control Commands .................................................................................................................................321

13.6.7 Precautions ..............................................................................................................................................324

13.7 Mirror Image for Facing Tool Posts ; G68,G69...............................................................................................326

13.8 Corner Chamfering/Corner Rounding I ..........................................................................................................331

13.8.1 Corner Chamfering I ; G01 X_ Z_ ,C_ ....................................................................................................331

13.8.2 Corner Rounding I ; G01 X_ Z_ ,R_........................................................................................................333

13.8.3 Interrupt during Corner Chamfering/Corner Rounding .......................................................................335

13.9 Corner Chamfering/Corner Rounding II .........................................................................................................336

13.9.1 Corner Chamfering II ; G01/G02/G03 X_ Z_ ,C.....................................................................................337

13.9.2 Corner Rounding II ; G01/G02/G03 X_ Z_ ,R_.......................................................................................339

13.9.3 Interrupt during Corner Chamfering/Corner Rounding .......................................................................340

13.10 Geometric .......................................................................................................................................................341

13.10.1 Geometric I ; G01 A_.............................................................................................................................341

13.10.2 Geometric IB ..........................................................................................................................................343

13.10.2.1 Geometric IB (Automatic calculation of two-arc contact) ; G02/G03 P_Q_ /R_......................344

13.10.2.2 Geometric IB (Automatic calculation of linear - arc intersection) ; G01 A_ , G02/G03 P_Q_H_

.........................................................................................................................................................348

13.10.2.3 Geometric IB (Automatic calculation of linear - arc intersection) ; G01 A_ , G02/G03 R_H_

.........................................................................................................................................................352

13.11 Programmable Parameter Input ; G10 L70, G11...........................................................................................356

13.12 Macro Interruption ; M96,M97........................................................................................................................358

13.13 Tool Change Position Return ; G30.1 - G30.5...............................................................................................366

13.14 High-accuracy control ; G61.1.......................................................................................................................369

13.15 Coordinate Rotation by Program ; G68.1/G69.1...........................................................................................379

13.16 Balance Cut ; G15,G14...................................................................................................................................388

13.17 Timing Synchronization between Part Systems ..........................................................................................392

13.17.1 Timing Synchronization between Part Systems ; !nL.........................................................................392

13.17.2 Start Point Designation Timing Synchronization (Type 1) ; G115.....................................................396

13.17.3 Start Point Designation Timing Synchronization (Type 2) ; G116....................................................398

13.18 2-part System Simultaneous Thread Cutting Cycle.....................................................................................400

13.18.1 2-part System Simultaneous Thread Cutting Cycle Parameter Setting Command ; G76...............400

13.18.2 2-part System Simultaneous Thread Cutting Cycle l ; G76.1.............................................................401

13.18.3 2-part System Simultaneous Thread Cutting Cycle ll ; G76.2............................................................403

13.19 Chopping ; G81.1 ............................................................................................................................................407

14 Coordinate System Setting Functions ................................................................................................. 413

14.1 Coordinate Words and Control Axes ............................................................................................................. 414

14.2 Basic Machine, Workpiece and Local Coordinate Systems ......................................................................... 416

14.3 Machine Zero Point and 2nd Reference Position (Zero point) .................................................................... 417

14.4 Automatic Coordinate System Setting ........................................................................................................... 418

14.5 Basic Machine Coordinate System Selection ; G53 ...................................................................................... 419

14.6 Coordinate System Setting ; G92.................................................................................................................... 420

14.7 Reference Position (Zero point) Return ; G28,G29........................................................................................ 421

14.8 2nd, 3rd, and 4th Reference Position (Zero point) Return ; G30.................................................................. 425

14.9 Reference Position Check ; G27 ..................................................................................................................... 428

14.10 Workpiece Coordinate System Setting and Offset ; G54 to G59 (G54.1) .................................................. 429

14.11 Local Coordinate System Setting ; G52 ...................................................................................................... 434

14.12 Coordinate System for Rotary Axis .............................................................................................................. 435

15 Protection Function ............................................................................................................................... 439

15.1 Chuck Barrier/Tailstock Barrier ; G22,G23..................................................................................................... 440

16 Measurement Support Functions ........................................................................................................ 443

16.1 Automatic Tool Length Measurement ; G37 .................................................................................................. 444

16.2 Skip Function ; G31 ......................................................................................................................................... 448

16.3 Multi-step Skip Function 1 ; G31.n , G04 ....................................................................................................... 453

16.4 Multi-step Skip Function 2 ; G31 P/L ............................................................................................................. 456

16.5 Programmable Current Limitation ; G10 L14 ; ............................................................................................... 459

Appendix 1 Order of G Function Command Priority ............................................................................... 461

Appendix 2 Program Errors ....................................................................................................................... 463