Siemens Simatic S7-300 Service Manual Page 3
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Statement List (STL) for S7-300 and S7-400 Programming
A5E00706960-01
iii
Preface
Purpose
This manual is your guide to creating user programs in the Statement List
programming language STL.
The manual also includes a reference section that describes the syntax and
functions of the language elements of STL.
Basic Knowledge Required
The manual is intended for S7 programmers, operators, and maintenance/service
personnel.
In order to understand this manual, general knowledge of automation technology is
required.
In addition to, computer literacy and the knowledge of other working equipment
similar to the PC (e.g. programming devices) under the operating systems
MS Windows 2000 Professional, XP Professional or MS Windows Server 2003 are
required.
Scope of the Manual
This manual is valid for release 5.4 of the STEP 7 programming software package.
Compliance with Standards
STL corresponds to the "Instruction List" language defined in the International
Electrotechnical Commission's standard IEC 1131-3, although there are substantial
differences with regard to the operations. For further details, refer to the table of
standards in the STEP 7 file NORM_TBL.WRI.
- A5E00706960-01 1
- Safety Guidelines 2
- Qualified Personnel 2
- Prescribed Usage 2
- Trademarks 2
- Disclaimer of Liability 2
- Preface 3
- Requirements 4
- Online Help 5
- Further Support 5
- Training Centers 5
- Technical Support 6
- Contents 12
- 1 Bit Logic Instructions 13
- 1.2 A And 15
- 1.3 AN And Not 16
- 1.4 O Or 17
- 1.5 ON Or Not 18
- 1.6 X Exclusive Or 19
- 1.7 XN Exclusive Or Not 20
- 1.8 O And before Or 21
- Bit Logic Instructions 23
- Bit Logic Instructions 24
- 1.15 ) Nesting Closed 26
- 1.16 = Assign 28
- 1.17 R Reset 29
- 1.18 S Set 30
- 1.19 NOT Negate RLO 31
- 1.20 SET Set RLO (=1) 32
- 1.21 CLR Clear RLO (=0) 33
- 1.23 FN Edge Negative 35
- 1.24 FP Edge Positive 37
- 2 Comparison Instructions 39
- RLO values 40
- 3 Conversion Instructions 43
- 3.15 RND Round 57
- 3.16 TRUNC Truncate 58
- 4 Counter Instructions 61
- LC Z3 64
- 4.5 R Reset Counter 65
- 4.7 CU Counter Up 67
- 4.8 CD Counter Down 68
- 5 Data Block Instructions 69
- Data Block Instructions 72
- Data Block Instructions 73
- 6 Logic Control Instructions 75
- 6.3 JL Jump to Labels 78
- 6.4 JC Jump if RLO = 1 79
- 6.5 JCN Jump if RLO = 0 80
- <jump 82
- 6.8 JBI Jump if BR = 1 83
- 6.9 JNBI Jump if BR = 0 84
- 6.10 JO Jump if OV = 1 85
- 6.11 JOS Jump if OS = 1 86
- 6.12 JZ Jump if Zero 87
- 6.13 JN Jump if Not Zero 88
- 6.14 JP Jump if Plus 89
- 6.15 JM Jump if Minus 90
- 6.19 LOOP Loop 94
- 7 Integer Math Instructions 95
- Instructions 96
- Format 100
- Description 100
- Status word 100
- Example 100
- Example: 13 divided by 4 101
- Example 1 102
- Example 2 102
- Example 3 103
- (32-Bit) 105
- IEEE-FP) 113
- (32-Bit IEEE-FP) 115
- Description of instruction 120
- Result 120
- Number (32-Bit) 122
- Numbers (32-Bit) 126
- 9.2 L Load 132
- Contents of ACCU 1 133
- Integer (32-Bit Pointer) 136
- Register 2 137
- 9.9 T Transfer 139
- (32-Bit Pointer) 142
- 10.2 BE Block End 146
- 10.5 CALL Block Call 149
- 10.6 Call FB 151
- Program Control Instructions 152
- 10.7 Call FC 153
- 10.8 Call SFB 155
- 10.9 Call SFC 157
- 10.10 Call Multiple Instance 158
- 10.17 )MCR End MCR 166
- 11.1 Shift Instructions 169
- Formate 170
- Examples 170
- 11.2 Rotate Instructions 182
- 12 Timer Instructions 189
- Area in Memory 190
- Time Value 190
- Time Base 191
- Bit Configuration in ACCU 1 191
- Choosing the right Timer 192
- Timer Instructions 194
- 12.6 R Reset Timer 199
- 12.7 SP Pulse Timer 200
- Timer Instructions 201
- 12.9 SD On-Delay Timer 204
- 12.11 SF Off-Delay Timer 208
- 13 Word Logic Instructions 211
- 13.3 OW OR Word (16-Bit) 214
- Word Logic Instructions 224
- 14 Accumulator Instructions 225
- Accumulator Instructions 236
- Mnemonics (SIMATIC) 239
- Mnemonics (International) 245
- B Programming Examples 251
- PEB1PEB2 254
- Statement List 256
- Clock Pulse Generator 257
- Signal Check 257
- Programming Examples 261
- Solving a Math Problem 262
- Heating an Oven 263
- Programming Examples 264
- Parameter Transfer 266
- Index-6 272
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