Mitsubishi Electric C70 PLC Owner's manual

Introduction

This manual describes the various signal interfaces and functions required when creating sequence

program of PLC CPU to operate C70.

Read this manual thoroughly before programming.

Thoroughly study the "Safety Precautions" on the following page to ensure safe use of this CNC unit.

Details described in this manual

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

maker 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 maker before starting use.

Some screens and functions may differ or may not be usable depending on the CNC version.

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 following signs indicate prohibition and compulsory.

The meaning of each pictorial sign is as follows.

There are no "Danger" items in this manual.

When there is a great risk that the user could be subject to fatalities or serious injuries if

handling is mistaken.

When the user could be subject to fatalities or serious injuries if handling is mistaken.

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

handling is mistaken.

This sign indicates prohibited behavior (must not do).

For example, indicates "Keep fire away".

This sign indicated a thing that is pompously (must do).

For example, indicates "it must be grounded".

CAUTION

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

DANGER

1. Items related to prevention of electric shocks

Do not operate the switches with wet hands, as this may lead to electric shocks.

Do not damage, apply excessive stress, place heavy things on or sandwich the cables, as this may lead

to electric shocks.

1. Items related to product and manual

For the items described in the "Restrictions" and "Usable State", the instruction manual issued by the

machine maker takes precedence over this instruction manual.

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

This manual has been written on the assumption that all options are provided.

Check the specifications issued by the machine maker before starting use.

Some screens and functions may differ or may not be usable depending on the CNC system version.

2. Items related to connection

When using an inductive load such as relays, always contact a diode in parallel to the load as a noise

measure.

When using a capacitive load such as a lamp, always connect a protective resistor serially to the load to

suppress rush currents.

3. Items related to design

Always turn the spindle phase synchronization completion signal ON before chucking both ends of the

workpiece to the basic spindle and synchronous spindle. If the spindle phase synchronization signal is

turned ON when both ends of the workpiece are chucked to the basic spindle and synchronous spindle,

the chuck or workpiece could be damaged by the torsion that occurs during phase alignment.

If the temperature rise detection function is invalidated with the parameters, the control could be

disabled when the temperature is excessive. This could result in machine damage or personal injuries

due to runaway axis, and could damage the device. Enable the detection function for normal use.

In order to prevent illegal transfer of bit data, use data update program.

WARNING

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 Outline........................................................................................................................................................... 1

2 System Configuration.................................................................................................................................. 3

2.1 Flow of Signals....................................................................................................................................... 5

2.1.1 Flow of PLC CPU and CNC CPU Data..........................................................................................5

2.1.2 Handling of Devices....................................................................................................................... 6

2.1.3 Data update program with NC ....................................................................................................... 7

2.1.4 Shared Device CNC Internal Device Correspondence Table...................................................... 10

3 Input/Output Signals Table with Controller............................................................................................. 13

3.1 Bit Type Input Signals (CNC->PLC)..................................................................................................... 16

3.1.1 System State................................................................................................................................ 16

3.1.2 Axis State..................................................................................................................................... 20

3.1.3 Part System State........................................................................................................................ 22

3.1.4 Spindle State ............................................................................................................................... 26

3.2 Data Type Input Signals (CNC->PLC)................................................................................................. 28

3.2.1 System State................................................................................................................................ 28

3.2.2 Part System State........................................................................................................................ 30

3.2.3 Axis State..................................................................................................................................... 33

3.2.4 Spindle State ............................................................................................................................... 34

3.3 Bit Type Output Signals (PLC->CNC).................................................................................................. 35

3.3.1 System Command ....................................................................................................................... 35

3.3.2 Axis Command............................................................................................................................. 39

3.3.3 Part System Command................................................................................................................ 42

3.3.4 Spindle Command ....................................................................................................................... 49

3.4 Data Type Output Signals (PLC->CNC) .............................................................................................. 51

3.4.1 System Command ....................................................................................................................... 51

3.4.2 Part System Command................................................................................................................ 53

3.4.3 Axis Command............................................................................................................................. 56

3.4.4 Spindle Command ....................................................................................................................... 57

3.5 Each Application.................................................................................................................................. 58

3.5.1 PLC Axis State............................................................................................................................. 58

3.5.2 PLC Axis Control.......................................................................................................................... 60

3.5.3 Window Result Information.......................................................................................................... 62

3.5.4 Window Command....................................................................................................................... 65

3.5.5 Data Registered to Magazine for M System................................................................................ 72

3.5.6 Tool Life Management (M System).............................................................................................. 74

3.5.7 Safety Observing ......................................................................................................................... 76

3.5.8 PLC Constants............................................................................................................................. 78

3.5.9 PLC Bit Selection......................................................................................................................... 80

3.5.10 PLC Axis Indexing Interface....................................................................................................... 81

3.6 Special Relay/Register Signals............................................................................................................ 82

3.6.1 Special Relay............................................................................................................................... 82

3.6.2 Special Register........................................................................................................................... 84

4 Explanation of Interface Signals............................................................................................................... 89

4.1 Bit Type Input Signals : System State ( CNC CPU->PLC CPU).......................................................... 91

4.2 Bit Type Input Signals : Axis State (CNC CPU->PLC CPU).............................................................. 103

4.3 Bit Type Input Signals : Part System State (CNC CPU->PLC CPU) ................................................ 117

4.4 Bit Type Input Signals : Spindle State (CNC CPU->PLC CPU)......................................................... 146

4.5 Data Type Input Signals : System State ( CNC CPU->PLC CPU)..................................................... 156

4.6 Data Type Input Signals : Axis State (CNC CPU->PLC CPU)........................................................... 173

4.7 Data Type Input Signals : Part System State (CNC CPU->PLC CPU).............................................. 177

4.8 Data Type Input Signals : Spindle State (CNC CPU->PLC CPU)...................................................... 195

4.9 Bit Type Output Signals : System Command ( PLC CPU->CNC CPU)............................................. 197

4.10 Bit Type Output Signals : Axis Command ( PLC CPU->CNC CPU)................................................ 213

4.11

Bit Type Output Signals : Part System Command ( PLC CPU->CNC CPU) ................................... 229

4.12 Bit Type Output Signals : Spindle Command ( PLC CPU->CNC CPU)........................................... 292

4.13 Data Type Output Signals : System Command ( PLC CPU->CNC CPU)........................................ 307

4.14 Data Type Output Signals : Axis Command ( PLC CPU->CNC CPU).............................................321

4.15 Data Type Output Signals : Part System Command (PLC CPU->CNC CPU).................................323

4.16 Data Type Output Signals : Spindle Command ( PLC CPU->CNC CPU)........................................ 341

5 Explanation for Each Application........................................................................................................... 345

5.1 PLC Axis Control................................................................................................................................346

5.1.1 Specifications............................................................................................................................. 346

5.1.2 Detailed Explanation..................................................................................................................347

5.1.3 Interface with PLC...................................................................................................................... 348

5.1.4 Details of PLC Axis Control Information Data............................................................................350

5.1.5 Precautions................................................................................................................................ 358

5.1.6 Timing Chart ..............................................................................................................................358

5.1.7 Reference Position Return Near Point Detection....................................................................... 365

5.1.8 Handle Feed Axis Selection....................................................................................................... 365

5.1.9 Buffering Mode........................................................................................................................... 366

5.1.10 Parameters .............................................................................................................................. 369

5.1.11 PLC Axis Monitor..................................................................................................................... 371

5.1.12 Absolute Position Detection..................................................................................................... 371

5.1.13 Rotary axis............................................................................................................................... 371

5.1.14 Position switch......................................................................................................................... 371

5.1.15 Usage Example........................................................................................................................ 372

5.2 PLC Window ...................................................................................................................................... 373

5.2.1 Details........................................................................................................................................ 373

5.2.2 Read window .............................................................................................................................377

5.2.3 Write window.............................................................................................................................. 380

5.2.4 Operation Details .......................................................................................................................383

5.2.5 Usage Examples........................................................................................................................ 385

5.2.6 Precautions................................................................................................................................ 389

5.3 Tool Life Management (M System)....................................................................................................390

5.3.1 Outline of Tool Life Management Function................................................................................390

5.3.2 Tool Life Management Methods ................................................................................................391

5.3.3 Procedure when Tool Function Command is Executed.............................................................392

5.3.4 Procedure when Spindle Tool is Changed.................................................................................393

5.3.5 Tool Life Management II Method ............................................................................................... 394

5.3.6 Maximum Number of Registerable Tools...................................................................................394

5.3.7 Tool Data ...................................................................................................................................395

5.3.8 Usage Time, Work Count........................................................................................................... 397

5.3.9 Tool Data Flow (R Register) ...................................................................................................... 398

5.3.10 User PLC Processing...............................................................................................................399

5.3.11 Interface with PLC.................................................................................................................... 400

5.4 Tool Life Management (L System)..................................................................................................... 405

5.4.1 Interface with PLC...................................................................................................................... 405

5.5 External Search..................................................................................................................................409

5.6 External Machine Coordinate System Compensation........................................................................ 416

5.7 Safety Observing................................................................................................................................ 417

5.7.1 CNC CPU -> PLC CPU Interface signals................................................................................... 417

5.8 GOT Window...................................................................................................................................... 429

5.8.1 GOT Window Interface .....................................................................................................

......... 430

5.8.

2 How to Obtain Window Data......................................................................................................433

5.8.3 Details of Command ..................................................................................................................436

5.8.4 Automatic setting window ......................................................................................................... 451

5.8.5 Error code for each command code..........................................................................................454

5.9 PLC Constants...................................................................................................................................455

5.10 PLC bit selection..............................................................................................................................456

5.11 Chopping......................................................................................................................................... 457

5.11.1 Interface with PLC.................................................................................................................... 458

5.11.2 Chopping command from PLC................................................................................................. 465

5.11.3 Chopping operation.................................................................................................................. 466

5.11.4 Interrupt operation during chopping........................................................................................466

5.11.5 Changing the peformance parameter during the chopping start state..................................... 467

5.11.6 Chopping compensation operation..........................................................................................468

5.11.7 Chopping feedrate ................................................................................................................... 471

5.11.8 Usage example........................................................................................................................ 473

5.12 PLC Axis Indexing............................................................................................................................ 474

5.12.1 Functions ................................................................................................................................. 474

5.12.2 PLC Axis Indexing Interface..................................................................................................... 476

5.13 Switching between NC Axis / PLC Axis........................................................................................... 496

5.13.1 Outline ..................................................................................................................................... 496

5.13.2 Specification............................................................................................................................. 496

5.13.3 Combined Functions................................................................................................................ 499

5.13.4 Parameter settings................................................................................................................... 503

5.13.5 Interface with PLC.................................................................................................................... 506

6 Spindle Control ........................................................................................................................................ 509

6.1 Related Parameters........................................................................................................................... 510

6.2 Connection Method............................................................................................................................ 510

6.3 Flow of Spindle (S) Data.................................................................................................................... 511

7 Handling of M, S, T, B Functions............................................................................................................ 513

7.1 Command Format.............................................................................................................................. 514

7.2 Miscellaneous Function Finish........................................................................................................... 514

7.2.1 Operation Sequence 1 (Using FIN1 with M Command)............................................................. 515

7.2.2 Operation Sequence 2 (Using FIN2 with M Command)............................................................. 516

7.2.3 When M Commands Continue (Using FIN2 with M Command) ................................................ 517

7.3 M Code Independent Output.............................................................................................................. 518

7.3.1 Operation Sequence.................................................................................................................. 518

7.4 Axis Movement and M Commands.................................................................................................... 520

7.5 Precautions........................................................................................................................................ 521

8 Exclusive Instructions............................................................................................................................. 523

8.1 ATC Exclusive Instruction.................................................................................................................. 525

8.1.1 Outline of ATC Control............................................................................................................... 525

8.1.2 ATC Operation........................................................................................................................... 525

8.1.3 Explanation of Terminology ....................................................................................................... 526

8.1.4 Relationship between Tool Registration Screen and Magazines............................................... 526

8.1.5 Use of ATC and ROT Instructions ............................................................................................. 527

8.1.6 Format of ATC Exclusive Instruction.......................................................................................... 528

8.1.7 Functions ................................................................................................................................... 530

8.1.8 Operation Outline....................................................................................................................... 532

8.1.9 Errors......................................................................................................................................... 533

8.1.10 Program Example.................................................................................................................... 533

8.1.11 File Register Allocation and Parameters for ATC Control........................................................ 534

8.1.12 Details of Each Instruction....................................................................................................... 536

8.2 ROT Instruction.................................................................................................................................. 547

8.2.1 Instruction List............................................................................................................................ 547

8.2.2 Format of ROT Instruction ......................................................................................................... 547

8.2.3 Functions ................................................................................................................................... 549

8.2.4 Operation Outline....................................................................................................................... 550

8.2.5 Errors......................................................................................................................................... 551

8.2.6 Program Example..........................................................................................................

............ 551

8.2.7

Details of Each Instruction......................................................................................................... 552

8.3 D (P).DDWR Instruction..................................................................................................................... 556

8.3.1 Format of DDWR Instruction...................................................................................................... 557

8.3.2 Operation when executing the DDWR instruction...................................................................... 559

8.3.3 Error contents ............................................................................................................................ 560

8.3.4 Calculation error......................................................................................................................... 560

8.3.5 Interlock using the PLC instruction exclusive for NC................................................................. 561

8.3.6 Program example....................................................................................................................... 562

8.4 D(P).DDRD Instruction....................................................................................................................... 563

8.4.1 Format of DDRD Instruction....................................................................................................... 564

8.4.2 Operation when executing the DDRD instruction ...................................................................... 566

8.4.3 Error contents ............................................................................................................................567

8.4.4 Calculation error......................................................................................................................... 567

8.4.5 Program example.......................................................................................................................568

8.5 Read/Write of Common Variables...................................................................................................... 569

8.5.1 Instruction Format...................................................................................................................... 569

8.5.2 CNC Side Devices to be Specified ............................................................................................569

8.5.3 Common Variable Control Data.................................................................................................570

8.5.3.1 Data Type .......................................................................................................................... 571

8.5.3.2 Decimal Point Position in the Data..................................................................................... 571

8.5.3.3 Error Notification Selection ................................................................................................ 572

8.5.4 Error Contents............................................................................................................................572

8.5.5 Program Examples .................................................................................................................... 573

8.5.5.1 Write Data to Common Variables ...................................................................................... 573

8.5.5.2 Read Common Variable Data............................................................................................573

8.5.5.3 Change the Common Variable Control Data ..................................................................... 574

8.5.5.4 Read Common Variable Data, Calculate and then Write the Data to Common Variables 575

8.6 Precautions........................................................................................................................................ 576

8.6.1 Transmitting Exclusive Instructions between CPUs...................................................................576

8.6.2 Executing NC Exclusive Instructions ........................................................................................579

8.6.3 Completion Status Information................................................................................................... 579

Appendix 1 List of PLC Window Data ....................................................................................................... 581

Appendix 1.1 Section No. List.................................................................................................................. 590

Appendix 1.2 Sub-section No. List........................................................................................................... 591

Appendix 1.3 Explanation of Read/Write Data......................................................................................... 606

Appendix 1.3.1 How to refer to the data ............................................................................................. 606

Appendix 1.3.2 Data unit system........................................................................................................ 607

Appendix 1.3.3 Explanation of data details.........................................................................................608

1

Outline

1 Outline

MITSUBISHI CNC

2

This manual is prepared to assist you to understand the various control signals necessary for creating the sequence

program.

The manual is composed as shown below. Refer to related sections as necessary to gain the maximum benefit from the

manual.

Please note that the specifications referred to in the text represent the maximum

specifications which include also those under development.

Handling of

M, S, T and

B functions

Spindle

control

Explanation

of interface

signals

Device

Input signals

Output signals

Each

application

Table for input/

output signals

with controller

System

configuration

PLC Interface

Manual

(cover)

3

2

System Configuration

2 System Configuration

MITSUBISHI CNC

4

MITSUBISHI

MITSUBISHI MITSUBISHI

(USB/Serial)

QJ71 E71-100

47 0

+0+ 6

12' 0

5&

'4 4

%1/ '44 

 / 4&

QXxxx x

27..

MITSUBISHI

QXxxx x QXxxx x QXxxx x QXxxx x

Q172DNCPU-S2

MITSUBISHI

PLC CPU module

CNC CPU module(s)

Communication, I/O module(s)

HMI with touch panel

(For GOT/CNC exclusive use)

Machine operation panel

Servo/Spindle drive unit

sensor

PLC program development tool

GX-DEVELOPER installed

Personal computer

(Optical communication)

Power

supply

Manual handle

Switches, coils, etc.

(Display interface)

C70 PLC Interface Manual

2.1 Flow of Signals

5

2.1 Flow of Signals

2.1.1 Flow of PLC CPU and CNC CPU Data

The flow of PLC CPU and CNC CPU data is shown below.

(1) The data PLC CPU wrote into G device is automatically transmitted to each CNC CPU by the high-speed bus.

(2) The CNC data (state signal) is automatically written into the read area corresponding to each CNC CPU of PLC

CPU by the high-speed bus.

(3) For the writing area of PLC CPU (G device), the writing area (G device) is different depending on the signal for

which CNC CPU.

(4) Writing area 1 and 2 are the same data structures.

(5) Read area 1 and 2 are the same data structures.

(6) When one CNC CPU is used, writing area 1 and read area 1 are used.

(7) When two CNC CPUs are used, writing area 1 and read area 1 are used for CNC CPU#1, writing area 2 and read

area 2 are used for CNC CPU#2.

(8) Note that the head address of G device in writing area 2 corresponding to CNC CPU#2 and the head address of G

device in writing area 1 corresponding to CNC CPU#1 is different. In "3 INPUT/OUTPUT SIGNALS TABLE WITH

CONTROLLER", this is indicated like "Sharing G+1234".

(9) It is possible to change the head address "U3E0\G13072" for a writing area 2 to "U3E0\G14000" to start from a

round number.

(Y,R)

(X,R)

(Y,R)

(X,R)

Write area

No.1

The devices shared between

CNC CPU-#2 (No.3)

CNC CPU-#1 (No.2)

PLC CPU (No.1)

multi-CPU (G)

Write area 1

Write area 2

Read area 1

Read area 2

No.1

No.2

No.3

Write area

Read area

Write area

Control signal

State signal State signal

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Mitsubishi Electric C70 PLC Owner's manual

Mitsubishi Electric C70 PLC Owner's manual

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