Logix5000 Controllers General Instructions Reference Manual _ www.bit.ly/taiho123

Changes throughout this revision are marked by change bars, as shown to the right of this paragraph.ALMD instruction operand descriptions and graphics for Relay Ladder Logic and Function

Trang 1

Logix5000 Controllers General Instructions Reference Manual

Catalog Numbers 1756 ControlLogix, 1768 CompactLogix, 1769 CompactLogix, 1789 SoftLogix, 1794 FlexLogix, PowerFlex 700S with DriveLogix

Trang 2

Solid-state equipment has operational characteristics differing from those of electromechanical equipment Safety

Guidelines for the Application, Installation and Maintenance of Solid State Controls (publication SGI-1.1 available from your local Rockwell Automation® sales office or online at http://www.rockwellautomation.com/literature/ ) describes some important differences between solid-state equipment and hard-wired electromechanical devices Because of this difference, and also because of the wide variety of uses for solid-state equipment, all persons responsible for applying this equipment must satisfy themselves that each intended application of this equipment is acceptable.

In no event will Rockwell Automation, Inc be responsible or liable for indirect or consequential damages resulting from the use or application of this equipment.

The examples and diagrams in this manual are included solely for illustrative purposes Because of the many variables and requirements associated with any particular installation, Rockwell Automation, Inc cannot assume responsibility or liability for actual use based on the examples and diagrams.

No patent liability is assumed by Rockwell Automation, Inc with respect to use of information, circuits, equipment, or software described in this manual.

Reproduction of the contents of this manual, in whole or in part, without written permission of Rockwell Automation, Inc., is prohibited.

Throughout this manual, when necessary, we use notes to make you aware of safety considerations.

Allen-Bradley, Rockwell Software, Rockwell Automation, RSLogix, ControlLogix, CompactLogix, SoftLogix, FlexLogix, DriveLogix, PowerFlex, Logix5000, SLC, MicroLogix, PLC-2, PLC-3, PLC-5, PhaseManager, RSLinx, RSView, and TechConnect are trademarks of Rockwell Automation, Inc.

Trademarks not belonging to Rockwell Automation are property of their respective companies.

WARNING: Identifies information about practices or circumstances that can cause an explosion in a hazardous environment,

which may lead to personal injury or death, property damage, or economic loss.

ATTENTION: Identifies information about practices or circumstances that can lead to personal injury or death, property

damage, or economic loss Attentions help you identify a hazard, avoid a hazard, and recognize the consequence.

SHOCK HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that dangerous

voltage may be present.

BURN HAZARD: Labels may be on or inside the equipment, for example, a drive or motor, to alert people that surfaces may

reach dangerous temperatures.

IMPORTANT Identifies information that is critical for successful application and understanding of the product.

Trang 3

This manual contains new and updated information Changes throughout this revision are marked by change bars, as shown to the right of this paragraph.

ALMD instruction operand descriptions and graphics for Relay Ladder Logic and Function Block Diagram languages 44

Added ProgUnshelve, OperShelve and OperSuppress elements to the Alarm Structure Elements in the Programmatically Access Alarm Information

Corrected text for when an alarm is Disabled per version 21.00.00 changes, added Shelve, Suppress and Disable alarms information with state model

Trang 4

Notes:

Trang 5

Where to Find an Instruction 29

Preface Introduction 37

Who Should Use This Manual 37

Purpose of This Manual 37

Common Information for All Instructions 38

Conventions and Related Terms 38

Relay Ladder Rung Condition 39

Function Block States 40

Studio 5000 Environment 41

Additional Resources 41

Chapter 1 FactoryTalk Alarms and Events Logix-based Instructions (ALMD, ALMA) Digital Alarm (ALMD) 44

Relay Ladder 44

Structured Text 44

Function Block 44

ALARM_DIGITAL Structure 45

State Diagrams When Acknowledgement Required 49

State Diagrams When Acknowledgment Not Required 49

ALMD Alarm Acknowledge Required and Latched 51

ALMD Alarm Acknowledge Required and Not Latched 52

ALMD Alarm Acknowledge Not Required and Latched 52

ALMD Alarm Acknowledge Not Required and Not Latched 53

Relay Ladder 54

Structured Text 54

Function Block 54

Analog Alarm (ALMA) 55

Relay Ladder 55

Structured Text 55

Function Block 55

ALARM_ANALOG Structure 56

State Diagrams When Acknowledgement Required 64

State Diagrams When Acknowledgement Not Required 65

ALMA Level Condition Acknowledge Required 67

ALMA Level Condition Acknowledge Not Required 68

ALMA Rate of Change Acknowledge Required 69

ALMA Rate of Change Acknowledge Not Required 70

Trang 6

Monitor Alarm Status 77

Alarms Log 77

Programmatically Access Alarm Information 78

Shelve, Suppress, or Disable Alarms 79

Controller-based Alarm Execution 83

Controller Memory Use 83

Scan Time 85

Chapter 2 Bit Instructions (XIC, XIO, OTE, OTL, OTU, ONS, OSR, OSF, OSRI, OSFI) Bit Addressing 88

Examine If Closed (XIC) 90

Relay Ladder 90

Structured Text 90

Relay Ladder 91

Structured Text 91

Relay Ladder 92

Structured Text 92

Examine If Open (XIO) 93

Relay Ladder 93

Structured Text 93

Relay Ladder 95

Structured Text 95

Relay Ladder 95

Structured Text 95

Output Energize (OTE) 96

Relay Ladder 96

Structured Text 96

Relay Ladder 97

Structured Text 97

Output Latch (OTL) 98

Relay Ladder 98

Structured Text 98

Relay Ladder 99

Structured Text 99

Output Unlatch (OTU) 100

Relay Ladder 100

Structured Text 100

Relay Ladder 101

Structured Text 101

One Shot (ONS) 102

Relay Ladder 102

Structured Text 102

Relay Ladder 104

Structured Text 104

One Shot Rising (OSR) 105

Relay Ladder 105

One Shot Falling (OSF) 107

Trang 7

Relay Ladder Operands 107

One Shot Rising with Input (OSRI) 109

Structured Text 109

Function Block 109

FBD_ONESHOT Structure 109

Structured Text 111

Function Block 111

One Shot Falling with Input (OSFI) 112

Structured Text 112

Function Block 112

FBD_ONESHOT Structure 112

Structured Text 114

Function Block 114

Chapter 3 Timer and Counter Instructions (TON, TOF, RTO, TONR, TOFR, RTOR, CTU, CTD, CTUD, RES) Timer On Delay (TON) 116

Relay Ladder 116

TIMER Structure 116

Timer Off Delay (TOF) 120

Relay Ladder 120

TIMER Structure 120

Retentive Timer On (RTO) 124

Relay Ladder 124

TIMER Structure 124

Timer On Delay with Reset (TONR) 128

Structured Text 128

Function Block 128

FBD_TIMER Structure 128

Structured Text 131

Function Block Example 131

Timer Off Delay with Reset (TOFR) 132

Structured Text 132

Function Block Operands 132

FBD_TIMER Structure 132

Structured Text 135

Function Block 135

Retentive Timer On with Reset (RTOR) 136

Structured Text 136

Function Block Operands 136

Trang 8

COUNTER Structure 144

Count Up/Down (CTUD) 148

Structured Text 148

Function Block 148

FBD_COUNTER Structure 148

Structured Text 151

Function Block 151

Reset (RES) 152

Relay Ladder 152

Chapter 4 Input/Output Instructions (MSG, GSV, SSV, IOT) Message (MSG) 154 Relay Ladder 154

Structured Text 154

MESSAGE Structure 154

MSG Error Codes 161

Error Codes 161

Extended Error Codes 162

PLC and SLC Error Codes (.ERR) 164

Block-transfer Error Codes 166

Specify the Configuration Details 167

Specify This Data for a Logix5000 Controller as a Target Device 168 Specify CIP Data Table Read and Write Messages 168

Reconfigure an I/O Module 169

Relay Ladder 170

Structured Text 170

Specify CIP Generic Messages 171

Specify PLC-5 Messages 174

Specify SLC Messages 176

Specify Block-transfer Messages 176

MSG Configuration Examples 178

Specify the Communication Details 179

Specify a Path 179

Broadcast Button 181

System Protocol Tab Configuration 183

For Block Transfers 185

Specify a Communication Method or Module Address 185

Choose a Cache Option 186

Guidelines 187

Get System Value (GSV) and Set System Value (SSV) 188

Relay Ladder 188

Structured Text 189

GSV/SSV Objects 191

AddOnInstructionDefinition Attributes 192

Controller Attributes 192

Trang 9

ControllerDevice Attributes 194

CST Attributes 194

DF1 Attributes 196

FaultLog Attributes 198

Message Attributes 198

Module Attributes 199

Program Attributes 200

Routine Attributes 201

Safety Attributes 202

SerialPort Attributes 202

Task Attributes 203

WallClockTime Attributes 205

GSV/SSV Programming Example 206

Get Fault Information 206

Relay Ladder 206

Structured Text 206

Relay Ladder 206

Structured Text 207

Relay Ladder 207

Structured Text 207

Set Enable And Disable Flags 207

Relay Ladder 208

Structured Text 208

Immediate Output (IOT) 209

Relay Ladder 209

Structured Text 209

Relay Ladder 211

Structured Text 211

Relay Ladder 211

Structured Text 211

Chapter 5 Compare Instructions (CMP, EQU, GEQ, GRT, LEQ, LES, LIM, MEQ, NEQ) Compare (CMP) 215

Relay Ladder 215

Structured Text 215

CMP Expressions 217

Valid Operators 217

Format Expressions 217

Determine the Order of Operation 218

Trang 10

Relay Ladder 223

Structured Text 223

Function Block 223

Greater Than or Equal To (GEQ) 224

Relay Ladder 224

Structured Text 224

Function Block 225

FBD_COMPARE Structure 225

Relay Ladder 226

Function Block 226

Relay Ladder 227

Structured Text 227

Function Block 227

Greater Than (GRT) 228

Relay Ladder 228

Structured Text 228

Function Block 228

Relay Ladder 230

Function Block 230

Relay Ladder 231

Structured Text 231

Function Block 231

Less Than or Equal To (LEQ) 232

Relay Ladder 232

Structured Text 232

Function Block 232

Relay Ladder 234

Function Block 234

Relay Ladder 235

Structured Text 235

Function Block 235

Less Than (LES) 236

Relay Ladder 236

Structured Text 236

Function Block 236

Relay Ladder 238

Function Block 238

Relay Ladder 239

Structured Text 239

Function Block 239

Limit (LIM) 240

Relay Ladder 240

Structured Text 240

Function Block 240

Trang 11

FBD_LIMIT Structure 241

Relay Ladder 243

Function Block 243

Relay Ladder 244

Structured Text 244

Function Block 244

Relay Ladder 245

Structured Text 245

Function Block 245

Mask Equal To (MEQ) 246

Relay Ladder 246

Structured Text 246

Function Block 247

FBD_MASK_EQUAL Structure 247

Entering an Immediate Mask Value 247

Relay Ladder 248

Function Block 248

Relay Ladder 249

Structured Text 249

Function Block 249

Relay Ladder 250

Structured Text 250

Function Block 250

Not Equal To (NEQ) 251

Relay Ladder 251

Structured Text 251

Function Block 251

Relay Ladder 253

Function Block 253

Relay Ladder 254

Structured Text 254

Function Block 254

Chapter 6 Compute/Math Instructions (CPT, ADD, SUB, MUL, DIV, MOD, SQR, SQRT, NEG, ABS) Compute (CPT) 257

Relay Ladder 257

Structured Text 257

Valid Operators 259

Trang 12

Function Block 263

Relay Ladder 264

Structured Text 264

Function Block 264

Subtract (SUB) 265

Relay Ladder 265

Structured Text 265

Function Block 266

FBD_MATH Structure 266

Relay Ladder 266

Function Block 267

Relay Ladder 267

Structured Text 267

Function Block 267

Multiply (MUL) 268

Relay Ladder 268

Structured Text 268

Function Block 269

Relay Ladder 269

Function Block 270

Relay Ladder 270

Structured Text 270

Function Block 270

Divide (DIV) 271

Relay Ladder 271

Structured Text 271

Function Block 272

Relay Ladder 273

Function Block 273

Relay Ladder 274

Structured Text 274

Function Block 274

Relay Ladder 275

Modulo (MOD) 276

Relay Ladder 276

Structured Text 276

Function Block 277

Relay Ladder 278

Function Block 278

Relay Ladder 279

Structured Text 279

Function Block 279

Square Root (SQR) 280

Relay Ladder 280

Trang 13

Structured Text 280

Function Block 280

FBD_MATH_ADVANCED Structure 280

Relay Ladder 281

Function Block 281

Relay Ladder 282

Structured Text 282

Function Block 282

Negate (NEG) 283

Relay Ladder 283

Structured Text 283

Function Block 283

Relay Ladder 284

Function Block 284

Relay Ladder 285

Structured Text 285

Function Block 285

Absolute Value (ABS) 286

Relay Ladder 286

Structured Text 286

Function Block 286

Relay Ladder 287

Function Block 287

Relay Ladder 288

Structured Text 288

Function Block 288

Chapter 7 Move/Logical Instructions (MOV, MVM, BTD, MVMT, BTDT, CLR, SWPB, AND, OR, XOR, NOT, BAND, BOR, BXOR, BNOT) Move (MOV) 291

Relay Ladder 291

Structured Text 291

Relay Ladder 292

Structured Text 292

Masked Move (MVM) 293

Relay Ladder 293

Structured Text 293

Enter an Immediate Mask Value 294

Trang 14

Bit Field Distribute (BTD) 299

Relay Ladder 299

Bit Field Distribute with Target (BTDT) 302

Structured Text 302

Function Block 302

FBD_BIT_FIELD_DISTRIBUTE Structure 303

Structured Text 305

Function Block 305

Clear (CLR) 306

Relay Ladder 306

Structured Text 306

Relay Ladder 307

Structured Text 307

Swap Byte (SWPB) 308

Relay Ladder 308

Structured Text 308

Relay Ladder 309

Structured Text 310

Relay Ladder 311

Structured Text 311

Bitwise AND (AND) 312

Relay Ladder 312

Structured Text 312

Function Block 312

FBD_LOGICAL Structure 313

Relay Ladder 313

Function Block 314

Relay Ladder 315

Structured Text 315

Function Block 315

Bitwise OR (OR) 316

Relay Ladder 316

Structured Text 316

Function Block 316

Relay Ladder 317

Function Block 318

Relay Ladder 319

Structured Text 319

Function Block 319

Bitwise Exclusive OR (XOR) 320

Relay Ladder 320

Structured Text 320

Function Block 320

Relay Ladder 321

Function Block 322

Trang 15

Relay Ladder 323

Structured Text 323

Function Block 323

Bitwise NOT (NOT) 324

Relay Ladder 324

Structured Text 324

Function Block 324

Relay Ladder 325

Function Block 326

Relay Ladder 326

Structured Text 326

Function Block 326

Boolean AND (BAND) 327

Structured Text 327

Function Block 327

FBD_BOOLEAN_AND Structure 327

Structured Text 328

Function Block 329

Structured Text 329

Boolean OR (BOR) 330

Structured Text 330

Function Block 330

FBD_BOOLEAN_OR Structure 330

Structured Text 331

Function Block 331

Structured Text 332

Boolean Exclusive OR (BXOR) 333

Structured Text 333

Function Block 333

FBD_BOOLEAN_XOR Structure 333

Structured Text 334

Function Block 334

Structured Text 335

Boolean NOT (BNOT) 336

Structured Text 336

Function Block 336

FBD_BOOLEAN_NOT Structure 336

Structured Text 337

Function Block 337

Trang 16

File Arithmetic and Logic (FAL) 345

Relay Ladder 345

Structured Text 345

CONTROL Structure 346

FAL Expressions 355

Valid Operators 355

File Search and Compare (FSC) 357

Relay Ladder 357

FSC Expressions 362

Valid Operators 362

Use Strings in an Expression 364

Copy File (COP) Synchronous Copy File (CPS) 365

Relay Ladder 365

Structured Text 365

Relay Ladder 368

Structured Text 368

Relay Ladder 368

Structured Text 368

Relay Ladder 369

Structured Text 369

Relay Ladder 369

Structured Text 369

Relay Ladder 370

Structured Text 370

File Fill (FLL) 371

Relay Ladder 371

Structured Text 371

Relay Ladder 374

Structured Text 374

File Average (AVE) 375

Relay Ladder 375

Structured Text 375

Relay Ladder 378

Structured Text 378

Relay Ladder 379

Structured Text 379

File Sort (SRT) 380

Relay Ladder 380

Structured Text 380

Relay Ladder 383

Trang 17

Structured Text 383

Relay Ladder 384

Structured Text 384

File Standard Deviation (STD) 385

Relay Ladder 385

Structured Text 386

Relay Ladder 389

Structured Text 389

Relay Ladder 390

Structured Text 391

Size In Elements (SIZE) 392

Relay Ladder 392

Structured Text 392

Relay Ladder 393

Structured Text 393

Relay Ladder 394

Structured Text 394

Relay Ladder 395

Structured Text 395

Chapter 9 Array (file)/Shift Instructions (BSL, BSR, FFL, FFU, LFL, LFU) Bit Shift Left (BSL) 398 Relay Ladder 398

Bit Shift Right (BSR) 402

Relay Ladder 402

FIFO Load (FFL) 406

Relay Ladder 406

FIFO Unload (FFU) 412

Relay Ladder 412

LIFO Load (LFL) 418

Relay Ladder 418

LIFO Unload (LFU) 424

Relay Ladder 424

Trang 18

Use SQI without SQO 435

Sequencer Output (SQO) 436

Relay Ladder 436

Using SQI with SQO 439

Resetting the Position of SQO 439

Sequencer Load (SQL) 440

Relay Ladder 440

Chapter 11 Program Control Instructions (JMP, LBL, JSR, RET, SBR, JXR, TND, MCR, UID, UIE, AFI, NOP, EOT, SFP, SFR, EVENT) Jump to Label (JMP) Label (LBL) 447

Relay Ladder 447

Jump to Subroutine (JSR) Subroutine (SBR) Return (RET) 449

Relay Ladder 449

Structured Text 450

Function Block 450

Relay Ladder 451

Structured Text 451

Function Block 451

Relay Ladder 451

Structured Text 451

Function Block 452

Relay Ladder and Structured Text 454

Function Block 455

Relay Ladder 456

Structured Text 456

Relay Ladder 457

Function Block 458

Jump to External Routine (JXR) 459

Relay Ladder 459

EXT_ROUTINE_CONTROL Structure 460

Temporary End (TND) 462

Structured Text 462

Relay Ladder 463

Structured Text 463

Master Control Reset (MCR) 464

Relay Ladder 464

User Interrupt Disable (UID) User Interrupt Enable (UIE) 466

Relay Ladder 466

Structured Text 466

Relay Ladder 467

Structured Text 467

Always False Instruction (AFI) 468

Trang 19

Relay Ladder 468

No Operation (NOP) 469

Relay Ladder 469

End of Transition (EOT) 470

Relay Ladder 470

Structured Text 470

Relay Ladder 471

Structured Text 471

SFC Pause (SFP) 472

Relay Ladder 472

Structured Text 472

Relay Ladder 473

Structured Text 474

SFC Reset (SFR) 474

Structured Text 474

Relay Ladder 475

Structured Text 475

Trigger Event Task (EVENT) 476

Relay Ladder 476

Structured Text 476

Programmatically Determine if an EVENT Instruction Triggered a Task 476

Relay Ladder 477

Structured Text 478

Chapter 12 For/Break Instructions (FOR, FOR DO, BRK, EXIT, RET) For (FOR) 482 Relay Ladder 482

Structured Text 482

Break (BRK) 485

Relay Ladder 485

Structured Text 485

Return (RET) 486

Relay Ladder 486

Chapter 13 Special Instructions (FBC, DDT, DTR, PID) File Bit Comparison (FBC) 490 Relay Ladder 490

Trang 20

Select the Search Mode 498

Data Transitional (DTR) 504

Relay Ladder 504

Proportional Integral Derivative (PID) 507

Relay Ladder 507

Structured Text 508

PID Structure 508

Configure a PID Instruction 512

Specify Tuning 512

Specify Configuration 513

Specify Alarms 513

Specify Scaling 514

Use PID Instructions 514

Anti-reset Windup and Bumpless Transfer from Manual to Auto 516 PID Instruction Timing 517

Relay Ladder 518

Structured Text 518

Relay Ladder 519

Structured Text 519

Relay Ladder 520

Structured Text 521

Bumpless Restart 521

Derivative Smoothing 522

Set the Deadband 522

Use Output Limiting 523

Feedforward or Output Biasing 523

Cascade Loops 523

Relay Ladder 524

Structured Text 524

Control a Ratio 524

Relay Ladder 524

Structured Text 525

PID Theory 526

PID Process 526

PID Process with Master/Slave Loops 526

Chapter 14 Trigonometric Instructions (SIN, COS, TAN, ASN, ASIN, ACS, ACOS, ATN, ATAN) Sine (SIN) 528

Relay Ladder 528

Structured Text 528

Function Block 528

Relay Ladder 529

Function Block 529

Relay Ladder 530

Structured Text 530

Trang 21

Function Block 530

Cosine (COS) 531

Relay Ladder 531

Structured Text 531

Function Block 531

Relay Ladder 532

Function Block 532

Relay Ladder 533

Structured Text 533

Function Block 533

Tangent (TAN) 534

Relay Ladder 534

Structured Text 534

Function Block 534

Relay Ladder 535

Function Block 535

Relay Ladder 535

Structured Text 536

Function Block 536

Arc Sine (ASN) 537

Relay Ladder 537

Structured Text 537

Function Block 537

Relay Ladder 538

Function Block 538

Relay Ladder 538

Structured Text 539

Function Block 539

Arc Cosine (ACS) 540

Relay Ladder 540

Structured Text 540

Function Block 540

Relay Ladder 541

Function Block 541

Relay Ladder 541

Structured Text 542

Trang 22

Function Block 544 Relay Ladder 545 Structured Text 545 Function Block 545

Chapter 15 Advanced Math Instructions

(LN, LOG, XPY) Natural Log (LN) 548 Relay Ladder 548

Structured Text 548 Function Block 548 FBD_MATH_ADVANCED Structure 548 Relay Ladder 549 Function Block 549 Relay Ladder Example 549 Structured Text 550 Function Block 550 Log Base 10 (LOG) 551 Relay Ladder 551 Structured Text 551 Function Block 551 FBD_MATH_ADVANCED Structure 551 Relay Ladder 552 Function Block 552 Relay Ladder 552 Structured Text 553 Function Block 553

X to the Power of Y (XPY) 554 Relay Ladder 554 Structured Text 554 Function Block 554 FBD_MATH Structure 555 Relay Ladder 556 Function Block 556 Relay Ladder 556 Structured Text 557 Function Block 557

Chapter 16 Math Conversion Instructions

(DEG, RAD, TOD, FRD, TRN, TRUNC) Degrees (DEG) 560 Relay Ladder 560

Structured Text 560 Function Block 560 FBD_MATH_ADVANCED Structure 561 Relay Ladder 561 Function Block 561 Relay Ladder 562

Trang 23

Structured Text 562 Function Block 562 Radians (RAD) 563 Relay Ladder 563 Structured Text 563 Function Block 563 FBD_MATH_ADVANCED Structure 564 Relay Ladder 564 Function Block 564 Relay Ladder 565 Structured Text 565 Function Block 565 Convert to BCD (TOD) 566 Relay Ladder 566 Function Block 566 FBD_CONVERT Structure 566 Relay Ladder 567 Function Block 568 Relay Ladder 568 Function Block 568 Convert to Integer (FRD) 569 Relay Ladder 569 Function Block 569 FBD_CONVERT Structure 569 Relay Ladder 570 Function Block 570 Relay Ladder 570 Function Block 570 Truncate (TRN) 571 Relay Ladder 571 Structured Text 571 Function Block 571 FBD_TRUNCATE Structure 571 Relay Ladder 572 Function Block 572 Relay Ladder 573 Structured Text 573 Function Block 573

Chapter 17

Trang 24

Relay Ladder 580 Structured Text 581 ASCII Chars in Buffer (ACB) 582 Relay Ladder 582 Structured Text 582 SERIAL_PORT_CONTROL Structure 582 Relay Ladder 583 Structured Text 583 ASCII Clear Buffer (ACL) 584 Relay Ladder 584 Structured Text 584 Relay Ladder 585 Structured Text 585 ASCII Handshake Lines (AHL) 586 Relay Ladder 586 Structured Text 586 SERIAL_PORT_CONTROL Structure 587 Relay Ladder 588 Structured Text 589 ASCII Read (ARD) 590 Relay Ladder 590 Structured Text 590 SERIAL_PORT_CONTROL Structure 591 Relay Ladder 592 Structured Text 593 ASCII Read Line (ARL) 594 Relay Ladder 594 Structured Text 595 SERIAL_PORT_CONTROL Structure 595 Relay Ladder 596 Structured Text 597 ASCII Write Append (AWA) 598 Relay Ladder 598 Structured Text 598 SERIAL_PORT_CONTROL Structure 599 Relay Ladder 600 Structured Text 600 Relay Ladder 601 Structured Text 601 ASCII Write (AWT) 602 Relay Ladder 602 Structured Text 602 SERIAL_PORT_CONTROL Structure 603 Relay Ladder 604 Structured Text 604 Relay Ladder 605 Structured Text 605

Trang 25

Chapter 18 ASCII String Instructions

(CONCAT, DELETE, FIND, INSERT, MID) String Concatenate (CONCAT) 610 String Data Types 609

Relay Ladder 610 Structured Text 610 Relay Ladder 611 Structured Text 611 String Delete (DELETE) 612 Relay Ladder 612 Structured Text 612 Relay Ladder 613 Structured Text 613 Find String (FIND) 614 Relay Ladder 614 Structured Text 614 Relay Ladder 615 Structured Text 615 Insert String (INSERT) 616 Relay Ladder 616 Structured Text 616 Relay Ladder 617 Structured Text 617 Middle String (MID) 618 Relay Ladder 618 Structured Text 618 Relay Ladder 619 Structured Text 619

Chapter 19 ASCII Conversion Instructions

(STOD, STOR, DTOS, RTOS, UPPER,

LOWER)

String Data Types 622 String To DINT (STOD) 623 Relay Ladder 623 Structured Text 623 Relay Ladder 624 Structured Text 624 String To REAL (STOR) 625 Relay Ladder Operands 625 Structured Text 625 Relay Ladder 626

Trang 26

Relay Ladder 629 Structured Text 629 Relay Ladder 630 Structured Text 630 Upper Case (UPPER) 631 Relay Ladder 631 Structured Text 631 Relay Ladder 632 Structured Text 632 Lower Case (LOWER) 633 Relay Ladder 633 Structured Text 633 Relay Ladder 634 Structured Text 634

Chapter 20 Debug Instructions

(BPT, TPT) Breakpoints (BPT) 635 Relay Ladder 635

String Format 636 Tracepoints (TPT) 639 Relay Ladder 639 String Format 639

Appendix A Common Attributes Introduction 643

Status Flags 643 Expressions in Array Subscripts 645 Immediate Values 645 Floating Point Values 646 Guidelines for Floating-point Math Operations 646 Totalizer Examples 647 Data Conversions 648 Data Types 649 LINT Data Type Considerations 649 SINT or INT to DINT 649 Integer to REAL 651 DINT to SINT or INT 651 REAL to an Integer 652

Appendix B Function Block Attributes Introduction 653

Function Block Elements 653 Latching Data 654 Order of Execution 656 Resolve a Loop 656 Resolve Data Flow between Two Blocks 658

Trang 27

Create a One Scan Delay 658 Summary 659 Function Block Responses to Overflow Conditions 659 Timing Modes 659 Common Instruction Parameters for Timing Modes 660 Overview of Timing Modes 663 Program/Operator Control 664

Appendix C Structured Text Programming Introduction 669

Structured Text Syntax 669 Assignments 670 Specify a Non-retentive Assignment 671 Assign an ASCII Character to a String 672 Expressions 673 Use Arithmetic Operators and Functions 674 Use Relational Operators 675 Use Logical Operators 677 Use Bitwise Operators 678 Determine the Order of Execution 678 Instructions 679 Constructs 680 Some Key Words are Reserved 680 IF THEN 681 Structured Text 681 CASE OF 684 Structured Text 684 FOR…DO 687 Structured Text 687 WHILE…DO 690 Structured Text 690 REPEAT…UNTIL 693 Structured Text 693 Comments 696

Index

Trang 28

Notes:

Trang 29

Where to Find an Instruction

Use this locator to find the reference details about Logix instructions (the grayed-out instructions are available in other manuals) This locator also lists which programming languages are available for the instructions.

If the locator lists The instruction is documented in

Motion Logix5000 Controllers Motion Instructions Reference Manual, publication MOTION-RM002

Process control Logix5000 Controllers Process Control and Drives Instructions Reference Manual, publication 1756-RM006

ABL

ASCII Test For Buffer Line

Structured textABS

Absolute Value

Structured textFunction blockACB

ASCII Chars in Buffer 582 Relay ladderStructured text

Add

Structured textFunction blockAFI

Trang 30

ASCII Read

Structured textARL

ASCII Read Line

Structured textASN

Arc Sine

Structured textFunction blockATN

Function blockAVE

ASCII Write

Structured textBAND

Boolean AND

Function blockBNOT

Boolean NOT

Function blockBOR

Boolean OR

Function blockBPT

Message

Structured textBTW

Message

Structured textBXOR

Boolean Exclusive OR

Function blockCC

Coordinated Control

Process control Structured text

Function blockCLR

CONCATString Concatenate

Structured textCOP

Copy File

Structured textCOS

Cosine

Structured textFunction blockCPS

Synchronous Copy File 365 Relay LadderStructured textCPT

Discrete 3-State Device Process control Structured textFunction blockDDT

DEDTDeadtime Process control Structured textFunction blockDEG

Function blockDELETE

String Delete

Structured textDERV

Derivative

Function blockDFF

D Flip-Flop

Function blockDIV

Divide

Structured textFunction blockDTOS

DTR

EOT

Trang 31

Equal to

Structured textFunction blockESEL

Enhanced Select Process control Structured textFunction block

Greater Than

Structured textFunction blockGSV

HLL

High/Low Limit Process control Structured textFunction block

INTGIntegrator

Function blockIOT

Immediate Output

Structured textIREF

Jump to Label

JSRJump to Subroutine

Structured textFunction blockJXR

LBL

LDL2Second-Order Lead Lag Process control Structured textFunction blockLDLG

Lead-Lag Process control Structured textFunction blockLEQ

Less Than or Equal to 232 Relay ladderStructured text

Function blockLES

Less Than

Structured textFunction blockLFL

Trang 32

Motion Axis Fault Reset

Structured textMAG

Motion Axis Gear

Structured textMAHD

Motion Apply Hookup Diagnostics

Structured textMAH

Motion Axis Home

Structured textMAJ

Motion Axis Jog

Structured textMAM

Motion Axis Move

Structured textMAOC

Motion Arm Output Cam

Structured textMAPC

Motion Axis Position Cam

Structured textMAR

Motion Arm Registration

Structured textMASD

Motion Axis Shutdown

Structured textMAS

Motion Axis Stop

Structured textMASR

Motion Axis Shutdown Reset

Structured textMATC

Motion Axis Time Cam

Structured textMAVE

Moving Average

Function blockMAW

Motion Arm Watch

Structured textMAXC

Maximum Capture

Function BlockMCCD

Motion Coordinated Change

MCSDMotion Coordinated Shutdown

Structured textMCS

Motion Coordinated Stop

Structured TextMCSR

Motion Coordinated Shutdown Reset

Structured text

MCTMotion Coordinated Transform Coordinate Relay ladderStructured textMCTP

Motion Calculate Transform Position

Structured text

MDACMotion Master Driven Axis Control

Structured textMDCC

Motion Master Driven Coordinated Control

Structured text

MDFMotion Direct Drive Off Motion Relay ladderStructured textMDOC

Motion Disarm Output Cam Motion Relay ladderStructured textMDO

Motion Direct Drive On Motion Relay ladderStructured textMDR

Motion Disarm Registration Motion Relay ladderStructured textMDW

Motion Disarm Watch Motion Relay ladderStructured textMEQ

Function BlockMGSD

Motion Group Shutdown

Structured textMGS

Motion Group Stop

Structured textMGSP

Motion Group Strobe Position

Structured textMGSR

Motion Group Shutdown Reset

Structured textMID

Middle String

Structured textMINC

Minimum Capture

Function blockMMC

Modular Multivariable Control

Function block

Trang 33

Modulo

Structured textFunction blockMOV

Negate

Structured textFunction blockNEQ

Function blockNOP

Structured textFunction blockOREF

OSFIOne Shot Falling with Input 112 Structured textFunction blockOSF

OSRIOne Shot Rising with Input 109 Structured textFunction blockOSR

Equipment Phase Clear Failure PhaseManager Relay ladderStructured textPCMD

Equipment Phase Command PhaseManager Relay ladderStructured textPDET

Detach from Equipment Phase PhaseManager Relay ladderStructured textPFL

Equipment Phase Failure PhaseManager Relay ladderStructured textPIDE

Enhanced PID Process control Structured textFunction blockPID

Proportional Integral Derivative 507 Relay ladderStructured textPI

Proportional + Integral Process control Structured textFunction blockPMUL

Pulse Multiplier Process control Structured textFunction block

Trang 34

Equipment Phase New Parameters

Structured textPSC

Phase State Complete

Structured textPXRQ

Equipment Phase External Request

Structured textRAD

Radians

Structured textFunction blockRESD

Reset Dominant Process control Structured textFunction block

Rate Limiter

Function blockRMPS

Ramp/Soak

Function blockRTO

REAL to String

Structured textSBR

Subroutine

Structured textFunction blockSCL

Structured textSNEG

Selected Negate

Function blockSOC

Second-Order Controller

Function blockSQI

Sequencer Input

SQLSequencer Load

SQOSequencer Output

SQRSquare Root

Function blockSQRT

Square Root

SRTFile Sort

Structured textSRTP

Split Range Time Proportional

Function blockSSUM

Selected Summer

Function blockSSV

Set System Value

Structured textSTD

File Standard Deviation

STODString To DINT

Structured textSTOR

String To REAL

Structured textSUB

Subtract

Structured textFunction blockSWPB

TAN

Function blockTND

Temporary End

TODConvert to BCD

Function blockTOFR

Timer Off Delay with Reset

Function block

Trang 35

User Interrupt Enable

Structured textUPDN

Up/Down Accumulator

Function blockUPPER

Upper Case

Structured textXIC

Function block

Trang 36

Notes:

Trang 37

Introduction This manual provides a programmer with details about each available instruction

for a Logix-based controller.

Who Should Use This Manual You should be familiar with how the Logix-based controller stores and processes

data.

Novice programmers should read all of the details about an instruction before using the instruction Experienced programmers can refer to the instruction information to verify details.

Purpose of This Manual This manual is one of a set of related manuals that shows common procedures for

programming and operating Logix5000™ controllers For a complete list of common procedures manuals, see the Logix5000 Controllers Common Procedures Programming Manual, publication 1756-PM001

The term Logix5000 controller refers to any controller that is based on the Logix5000 operating system, such as:

Instruction name Identifies the instruction

Defines whether the instruction is an input or an output instruction

If available in relay ladder, describes the operands

If available in function block, describes the operands

The pins shown on a default function block are only the default pins The operands table lists all the possible pins for a function block

If available in structured text, describes the operands

Trang 38

The following icons help identify language-specific information.

Common Information for

Example Provides at least one programming example in each available programming language

Includes a description explaining each example

Table 1 - Description of Instruction Format

• Arithmetic status flags

• Data types

• Keywords

Function block attributes Function Block Attributes defines:

• Program and operator control

• Timing modes

A value is set to any non-zero number

All the bits in a value are cleared to 0

Trang 39

If an operand or parameter supports more than one data type, the bold data types

indicate optimal data types An instruction executes faster and requires less memory if all the operands of the instruction use the same optimal data type, typically DINT or REAL.

Relay Ladder Rung Condition

The controller evaluates ladder instructions based on the rung condition preceding the instruction (rung-condition-in) Based on the rung-condition-in and the instruction, the controller sets the rung condition following the

instruction (rung-condition-out), which in turn, affects any subsequent

instruction.

If the rung-condition-in to an input instruction is true, the controller evaluates the instruction and sets the rung-condition-out based on the results of the instruction If the instruction evaluates to true, the rung-condition-out is true; if the instruction evaluates to false, the rung-condition-out is false.

The controller also prescans instructions Prescan is a special scan of all routines

in the controller The controller scans all main routines and subroutines during prescan, but ignores jumps that could skip the execution of instructions The controller executes all FOR loops and subroutine calls If a subroutine is called more than once, it is executed each time it is called The controller uses prescan of relay ladder instructions to reset non-retentive I/O and internal values.

During prescan, input values are not current and outputs are not written The following conditions generate prescan:

• Toggle from Program to Run mode.

• Automatically enter Run mode from a power-up condition.

Trang 40

Rung-Function Block States

The controller evaluates function block instructions based on the state of different conditions.

Every function block instruction also includes EnableIn and EnableOut parameters:

• Function block instructions execute normally when EnableIn is set.

• When EnableIn is cleared, the function block instruction either executes

prescan logic, postscan logic, or just skips normal algorithm execution.

• EnableOut mirrors EnableIn, however, if function block execution detects

an overflow condition EnableOut is also cleared.

• Function block execution resumes where it left off when EnableIn toggles

from cleared to set However, there are some function block instructions that specify special functionality, such as re-initialization, when EnableIn toggles from cleared to set For function block instructions with time base parameters, whenever the timing mode is Oversample, the instruction always resumes were it left off when EnableIn toggles from cleared to set.

If the EnableIn parameter is not wired, the instruction always executes as normal and EnableIn remains set If you clear EnableIn, it changes to set the next time the instruction executes.

IMPORTANT When programming in function block, restrict the range of

engineering units to +/-10+/-15 because internal floating point calculations are done by using single precision floating point Engineering units outside of this range may result in a loss of accuracy

if results approach the limitations of single precision floating point (+/-10+/-38).

Possible Condition Description

Prescan Prescan for function block routines is the same as for relay ladder routines The only difference is that the Enablein parameter for each function

block instruction is cleared during prescan

Instruction first scan Instruction first scan refers to the first time an instruction is executed after prescan The controller uses instruction first scan to read current

inputs and determine the appropriate state to be in

Instruction first run Instruction first run refers to the first time the instruction executes with a new instance of a data structure The controller uses instruction first

run to generate coefficients and other data stores that do not change for a function block after initial download

Định dạng
Số trang	708
Dung lượng	6,81 MB