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6.3 OB 111: Clear ACCUs 1, 2, 3 and 4
Function
Calling special function organization block OB 111 is a simple way of
clearing ACCUs 1 to 4. OB 111 overwrites all four registers with "0".
Parameters
none
Result
Accus 1 to 4 (32 bits each) are deleted.
Possible errors
none
6
OB 111: Clear ACCUs 1, 2, 3 and 4
CPU 928B Programming Guide
C79000-B8576-C898-01
6 - 13
- CPU 928B 1
- Copyright 2
- Disclaimer of liability 2
- Safety-related guidelines 2
- How to use this Manual 3
- Overview of the Chapters 4
- Chapter 13 6
- Chapter 14 6
- How to Use this Manual 6
- Conventions used in the text 7
- Method of representation STL 8
- 1Introduction 10
- SIMATIC S5 family 11
- Suitability 11
- CPU 928B Programming Guide 12
- C79000-D8576-C898-01 12
- 1. 2. 3 13
- Processing according to 14
- 1.3 The Programs in a CPU 15
- User interfaces 16
- Default system reaction 16
- Modifying the defaults 16
- The Programs in a CPU 16
- User program 17
- Storing the user program 19
- Interfaces to the system 19
- Process image of the inputs 20
- I/O area (P area) 20
- F flags 21
- S flags (extended flag area) 21
- Timers (T) 22
- Counters (C) 22
- Relative addressing 23
- Absolute addressing 23
- Current data block 23
- 1.6 How to Tackle Programming 24
- Notes on the scope of 25
- Note on test strategies 26
- 1.7 Programming Tools 27
- •• Use as slave in 28
- User Program 29
- 2User Program 30
- The LAD, CSF, STL 31
- Methods of Representation 31
- Structured Programming 32
- :O F 54.1 33
- Number Representation 35
- 16-bit and 32-bit fixed 36
- Floating point numbers 37
- Coding floating point numbers 38
- Permissible numerical range 38
- Input/output on PG 38
- STEP 5 Programming Language 38
- Numbers in BCD code 39
- Block types 40
- Formal structure of the 41
- Block preheader 42
- Maximum length 42
- Available blocks 42
- Block storage 43
- Correcting and deleting 43
- Programming 44
- Block calls 44
- Unconditional call 45
- Conditional call 45
- Organization Blocks as 46
- User Interfaces 46
- 2 - 20 C79000-B8576-C898-01 47
- 2 - 22 C79000-B8576-C898-01 49
- Organization Blocks for 50
- Special Functions 50
- 2 - 24 C79000-B8576-C898-01 51
- 2.3 Function Blocks 52
- Structure of Function 53
- "calling and assigning 54
- How to program 54
- Function Blocks 54
- Programming Function 55
- Formal operands 56
- Calling Function Blocks and 57
- Assigning Parameters to 57
- Permitted actual operands 58
- ±0.1469368 x 10 59
- ±0.1701412 x 10 59
- Q 6.0 61
- Continued on the next page 62
- 2.4 Data Blocks 64
- Block header 65
- Block body 65
- Data Blocks 65
- Creating Data Blocks 66
- Opening Data Blocks 67
- Special Data Blocks 70
- Program Execution 72
- 3Program Execution 74
- 3 - 4 C79000-B8576-C898-01 75
- 3.2 Program Organization 76
- Program Organization 77
- Nesting blocks 79
- Nesting depth 80
- Example of nesting depth 80
- Different storage types 81
- START-UP 82
- Processing the User Program 82
- Definition of Terms used in 83
- Interrupt events 85
- Accumulators as working 86
- Bit condition codes 87
- Example of ERAB 88
- Other bit condition codes 88
- Word condition codes 88
- •• CC 1 and CC 0 89
- 3 - 18 C79000-B8576-C898-01 89
- Binary logic 90
- ±0,1469368 x 10 93
- ±0,1701412 x 10 93
- Examples of load and 94
- Addressing I/Os 96
- Bit assignment: 98
- Counter value 100
- Counter C 10 100
- Basic Operations 101
- Arithmetic operations 102
- Comparison operations 103
- Block operations 103
- NOP/display/stop operations 104
- Logic operations 105
- AND-before-OR operation 106
- OR-before-AND operation 107
- Set/reset operations 108
- (continued) 109
- Timer operations 111
- Timer operations (continued) 112
- Stored ON-delay timer 114
- Counter operations 115
- Supplementary Operations 120
- Binary logic operations 121
- Digital logic operations 121
- Timer and counter 123
- Examples 124
- Supplementary Operations 124
- Load and transfer 125
- Jump operations 129
- Executive Operations 130
- Shift operations 131
- ↓ DEF ↑ 133
- ↓ DED ↑ 134
- Conversion examples 135
- Examples of CFW, CSW 135
- Decrement/ 136
- Processing operations 136
- 1. Principle of substitution: 138
- Principle of the substitution 140
- Example of DI operation 141
- Disabling/enabling 142
- SED/SEE disable/enable 143
- Use of SED/SEE 144
- Semaphore Operations 144
- Continued on next page 146
- Operating Modes and Program 149
- Processing Levels 149
- 4Operating Modes and Program 150
- 4.1 Introduction and Overview 151
- 6ES5 948-3UA11 151
- LED display of modes 152
- Introduction and Overview 152
- 4.2 Program Processing Levels 154
- Features of a program 155
- Program Processing Levels 155
- Nesting other levels 156
- Specific system program 156
- Priority 157
- Response to double 158
- Examples of double 158
- Description of the individual 159
- 4.3 STOP Mode 160
- Request by the system 162
- Operator request 162
- STOP Mode 162
- 4.4 RESTART Mode 164
- When is a WARM RESTART 166
- permitted? 166
- MANUAL WARM RESTART 166
- RESTART Mode 166
- MANUAL WARM 170
- Power failure at RESTART 172
- Aborting RETENTIVE 173
- COLD RESTART 173
- 4.5 RUN Mode 174
- Cyclic Program Execution 175
- Interrupt points 177
- ACCUs as data storage 177
- RUN Mode 177
- Delay interrupt (from 178
- Version -3UB12) 178
- Interruptions 179
- Special features 179
- Clock-driven time interrupts 180
- User interface: OB 9 181
- TIME INTERRUPTS 182
- Collision of time interrupts 183
- (WECK-FE) 183
- Continuing program 184
- CONTROLLER INTERRUPT: 185
- Processing Closed Loop 185
- Controllers 185
- CLOSED LOOP 185
- PROCESS INTERRUPT: 186
- Interrupt-Driven Program 186
- Execution 186
- Multiple interrupts 187
- Process interrupt signal 187
- (at block boundaries) 188
- Nested Interrupt-Driven and 189
- Time-Driven Program 189
- Response time 191
- Interrupt and Error Handling 192
- Contents 193
- 5Interrupt and Error Handling 194
- C79000-B8576-C898-01 195
- 5.6 Error Information 196
- OUTPUT ISTACK 197
- System data RS 3 and RS 4 197
- Error Information 197
- 5 - 8 C79000-B8576-C898-01 199
- Example: 200
- 5 - 10 C79000-B8576-C898-01 201
- CONTROL BITS 202
- 5 - 12 C79000-B8576-C898-01 203
- Control bit Meaning 204
- 5 - 14 C79000-B8576-C898-01 205
- Lines 4 and 5 (CONTROL BITS) 206
- 5 - 16 C79000-B8576-C898-01 207
- Lines 6 to 8 (CONTROL BITS) 208
- ISTACK Content 209
- Explanation of the ISTACK 210
- 5 - 20 C79000-B8576-C898-01 211
- Information about the error 212
- ISTACK ID Meaning 212
- Condition code 213
- Cause of interrupt 213
- Meaning (called error OB) 214
- 5 - 24 C79000-B8576-C898-01 215
- Example 2: 217
- Continuation 1 of Example 2: 218
- Continued on the next page 218
- Continuation 2 of Example 2: 219
- C79000-B8576-C898-01 5 - 29 220
- Response of organization 221
- Interruptions during 222
- 5.5 Errors during RESTART 223
- DB0-FE (DB 0 Errors) 224
- DB1-FE (DB 1 Errors) 225
- DB2-FE (DB 2 Errors) 226
- DX0-FE (DX 0 or DX 2 227
- Errors during RESTART 228
- Errors which lead direct to 229
- Errors in RUN and in RESTART 229
- Errors- which cause an error 230
- OB to be called 230
- Substitution error 231
- Operation code error 232
- Parameter error 233
- LZF - calling a block that 234
- Load/transfer error 235
- Other runtime errors 236
- OB 182 error identifiers 238
- Error identifiers of the 239
- OB 150 error identifiers 240
- Error identifiers of OB 151 241
- OB 152 and OB 153 241
- QVZ during direct access 244
- QVZ during PII update 245
- IPC flags 245
- STOP in the case of QVZ 246
- ZYK (Cycle Time Exceeded 247
- WECK-FE (Collision of Time 248
- Interrupts) 248
- REG-FE (Controller Error) 249
- Entry in the control bit 250
- ABBR (Abort) 251
- Communication Errors 252
- Error numbers 1 to 3 253
- Meaning of the error numbers 253
- Integrated Special Functions 254
- 6Integrated Special Functions 257
- 6.1 Introduction 258
- Introduction 259
- Interfaces 260
- Errors during special 261
- Special functions with 262
- Function 263
- Possible errors 264
- Parameters 265
- 6 - 20 C79000-B8576-C898-01 272
- Possible errors: 273
- 6 - 26 C79000-B8576-C898-01 278
- Characteristics of the 280
- Data field in the flag area 281
- 15 12 11 8 7 0Bit no 287
- Important points 289
- Continued on the nex page 290
- Overview 292
- Enabling/disabling the 292
- Statistical data 293
- Functions 294
- 15 0Bit no. 4 3 295
- Function no.0 295
- Special Features 296
- Reaction to a COLD 296
- Calling OB 152 in a start-up 297
- Calling OB 152 when the 298
- OB 152: Cycle Statistics 298
- 6 - 50 C79000-B8576-C898-01 302
- Programming the 303
- :JU OB162 Loop counter 304
- RLO, CC 0 and CC 1 306
- Storing the BSTACK 306
- JU OB 170 308
- Continuation of the example: 309
- 3 (No. of elements in DX 10) 309
- DBA/DBL register 310
- Applications of OB 180 310
- Application of OB 181 314
- RLO, CC1, CC0 315
- 3 to 255) 316
- 15 8 7 0Bit no 318
- Reactions to errors 319
- Application 320
- Example 1 326
- :JU OB 190 Save flags 326
- :JU OB 191 Write back flags 326
- Example 2 326
- STEP 5 program in OB 13: 327
- Write the 327
- FYs back 327
- 6 - 76 C79000-B8576-C898-01 328
- OB 200: initialize 329
- OB 202: send 329
- OB 203: send test 329
- OB 204: receive 329
- OB 205: receive test 329
- What are pages? 330
- How to access pages 331
- Address areas for 332
- Notes on assigning 333
- OB 216 to OB 218: Page Access 335
- 824 23 15 7 339
- 6.22 OB 220: Sign Extension 342
- Error IDs 345
- Communication Flags 346
- :JU OB 226 read word 349
- COLD RESTART, however, not in 351
- COLD RESTART, but in another 351
- Data handling blocks 352
- Assignment aid 352
- Using the handling blocks 352
- Shift Registers 353
- Initializing 354
- Shifting 354
- ≤ L ≤ 256 358
- 6 - 106 C79000-B8576-C898-01 358
- Memory requirements 359
- Functional Description of 362
- STEU control word 363
- PID algorithm 363
- Differentiator 363
- Disturbance compensation 363
- PID Algorithm 364
- = TI ∗ XW 365
- (TD ∗ QU 365
- ≤YA ≤ LLV 367
- - Limit values 368
- - Entries in the DB: 368
- - Output variable is limited: 368
- Bit assignment of the control 369
- DW 11 in the transfer DB) 369
- Format of controller inputs 372
- General notes 373
- Controller parameters 374
- Parameter changes 375
- Abbreviations for PID 375
- Normalized fixed point 376
- Extended Data Block DX 0 380
- 7Extended Data Block DX 0 381
- 7.1 Application 382
- 7.2 Structure of DX 0 383
- Formal structure: 384
- Structure of DX 0 384
- Example of DX 0 385
- 7.3 Parameters for DX 0 386
- Parameters for DX 0 387
- Updating the timers 389
- Parameters for interrupt 390
- 7 - 14 C79000-B8576-C898-01 392
- Assigning Parameters 393
- 7 - 16 C79000-B8576-C898-01 394
- Flowchart for completing the 395
- DX 0 screen forms 395
- 7 - 18 C79000-B8576-C898-01 396
- Memory Assignment and 397
- Organization 397
- 8Memory Assignment and 398
- Structure of the Memory Area 399
- RAM or EPROM 400
- (see also Fig. 8-2) 400
- Address Distribution of 401
- Address areas for the 403
- Block Headers in the User 405
- Block Address Lists in Data 406
- Block DB 0 406
- Start address of FB 40 407
- 8 - 14 C79000-B8576-C898-01 409
- RS / RT Area 410
- Assignment of the system 411
- Bit Assignment of the 413
- System Data Words 413
- Example of UALW 415
- Address: EA02H 416
- High byte 416
- Low byte 416
- Example of UAMK 417
- STOP and RESTART IDs 418
- Address: EA05H 418
- High byte: STOP IDs 418
- Low byte: RESTART IDs 418
- 8 - 24 C79000-B8576-C898-01 419
- Address: EA07H 420
- High byte: RESET IDs 420
- 8 - 26 C79000-B8576-C898-01 421
- RS 29 (HIGH): 422
- RS 29 (LOW): 422
- 8 - 28 C79000-B8576-C898-01 423
- 8 - 30 C79000-B8576-C898-01 425
- 8 - 32 C79000-B8576-C898-01 427
- 8 - 34 C79000-B8576-C898-01 429
- Memory Access using 430
- Absolute Addresses 430
- 9Memory Access using 431
- 9.1 Introduction 432
- Memory access 434
- Operations 436
- LIR/TIR: Loading to or 437
- Transferring from a 16-Bit 437
- Memory Area Indirectly 437
- 9 - 10 C79000-B8576-C898-01 438
- Registers 0 to 3 and 9 to 12: 439
- ACCU 1, 2, 3 and 4 439
- Register 6: Data Block Start 439
- Address (DBA) 439
- Register 8: DBL = Data 442
- Block Length 442
- 8 (DW 0 to DW 7) 443
- Example 1 continued: 445
- Permissible memory areas 446
- Transferring Fields of Memory 446
- TNB and TWN between 8 and 448
- 16 bit memory areas 448
- Source DB 449
- Dest. DB 449
- LENGTH >= 4096 453
- Changing the BR register 454
- Operations for Transfer 455
- Accessing the Local 456
- Testing and setting a busy 457
- Sequence 458
- Permissible address area 458
- Error reaction 458
- Accessing the Page Memory 461
- Opening a page 462
- Multiprocessor Mode and 466
- Communication 466
- 10Multiprocessor Mode and 468
- 10.1 Multiprocessor Mode 469
- Exchanging Data via IPC 470
- Multiprocessor Mode 471
- Data exchange between 472
- CPUs and communication 472
- Transmitting IPC flags in 473
- Multiprocessor 473
- Inputting or changing DB 1 474
- Using the DB 1 screen form 474
- I/O assignment: 475
- Example of editing DB 1 476
- Entering DB 1 477
- Multiprocessor Communication 479
- How the Buffer is 481
- Processed and Managed 481
- System Start-Up 484
- Calling Communication OBs 485
- How to Assign Parameters 486
- Condition codes 487
- Condition code byte 488
- Evaluation of the code byte 489
- Initialization conflict 490
- Warning 493
- Transfer time 495
- CPU 1 CPU 2 496
- Mode (automatic/manual) 498
- •• block ID 499
- •• block number 499
- 10 - 34 C79000-B8576-C898-01 499
- Assignment list 500
- CPU 1 and CPU 3 501
- ; Receiver: CPU 3/22 fields 501
- ; Receiver: CPU 2/2 fields 501
- Total capacity 502
- 10.5 SEND Function (OB 202) 503
- Block ID 504
- Block number 504
- Field number 504
- SEND Function (OB 202) 504
- Transmitting capacity 507
- Structure of the (parameter) 510
- ACCU-1-L 510
- Transmitting CPU 510
- RECEIVE Function (OB 204) 510
- Receiving capacity 512
- 10 - 48 C79000-B8576-C898-01 513
- 10.9 Applications 516
- Programming function 517
- FB 200 continued 518
- Applications 519
- FB 204 continued: 522
- Programming FB 110 523
- FB 205 continued: 523
- FB 110 continued: 524
- Application of FB 110 527
- The problem 529
- The solution 530
- Data structure 530
- Structure of the 531
- Program structure 533
- FB 100 continued: 536
- 001F :T FW 242 536
- FB 101 continued: 538
- Application example 540
- PG Interfaces and Functions 544
- 11PG Interfaces and Functions 545
- 11.1 Overview 546
- 11.2 PG Functions 547
- WAIT STATE 548
- Memory configuration 548
- Output address 549
- Overall reset 549
- Compress memory 549
- Transfer block 550
- Delete block 551
- Start/stop 551
- Status block 552
- Program test 553
- Executing the function and 554
- PG Functions 554
- Cancelling the 555
- Aborting the function 555
- 11 - 16 C79000-B8576-C898-01 558
- Force variables 559
- Activities at Checkpoints 560
- 11 - 20 C79000-B8576-C898-01 562
- Installation 564
- Operation 564
- Parallel operation with 566
- 11 - 26 C79000-B8576-C898-01 568
- Special feature with cyclic 570
- Appendix 571
- C79000-A8576-C898-01 573
- Definition of terms 575
- Error IDs in System 576
- Data RS 3 and RS 4 576
- 12 - 8 C79000-A8576-C898-01 577
- RS 3 RS 4 Explanation 578
- Error IDs in ACCU 1 579
- 12 - 12 C79000-A8576-C898-01 581
- 12 - 14 C79000-A8576-C898-01 583
- 12 - 16 C79000-A8576-C898-01 585
- LEVEL (hexadecimal) 586
- Identifier Level 586
- Ready to start? 587
- Error analysis 587
- INTERRUPT STACK 588
- ! F1!F2!F3!F4!F5!F6!F7!F8! 590
- ! DISP SYMB!!!! !LIB.NO.!!! 590
- REL-SAC 590
- Further Reading 591
- Index and Lists 594
- List of Abbreviations 595
- C79000-T8576-C898-01 14 - 5 597
- 14 - 6 C79000-T8576-C898-01 598
- C79000-T8576-C898-01 14 - 7 599
- 14 - 8 C79000-T8576-C898-01 600
- C79000-T8576-C898-01 14 - 9 601
- List of Tables and Figures 602
- List of Figures 608
- C79000-V8576-C067-01 1 613
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