| 1. Introduction 16 1.1 Overview of the S7-1200 automation system 16 1.2 Introduction to STEP 7 Basic for S7-1200 26 1.3 Editing a SIMATIC project 32 2. SIMATIC S7-1200 automation system 38 2.1 S7-1200 station components 38 2.2 S7-1200 CPU modules 39 2.3 Signal modules (SM) 42 2.4 Communication modules (CM) 45 2.5 Other modules 46 2.6 SIPLUS S7-1200 47 3. Device configuration 48 3.1 Introduction 48 3.2 Configuring a station 50 3.3 Parameterization of modules 51 3.4 Configuring the network 56 4. Execution of control program 62 4.1 Operating modes 62 4.2 Creation of control program 67 4.3 Blocks 71 4.4 Calling blocks 84 4.5 Main program 88 4.6 Interrupt processing 96 4.7 Error handling 108 5. LAD/FBD program editor 114 5.1 Introduction 114 5.2 PLC tag table 115 5.3 Programming a code block 118 5.4 Programming a data block 128 5.5 Compiling blocks 131 5.6 Program information 134 5.7 Language setting 140 6. Ladder logic LAD 142 6.1 Introduction 142 6.2 Programming with contacts 145 6.3 Programming with coils 155 6.4 Programming with Q boxes in the ladder logic 159 6.5 Programming with EN/ENO boxes in the ladder logic 167 6.6 Functions for program flow control (LAD) 176 7. Function block diagram FBD 178 7.1 Introduction 178 7.2 Programming of binary logic operations (FBD) 181 7.3 Programming with standard boxes (FBD) 191 7.4 Programming with Q bones (FBD) 195 7.5 Programming with EN/ENO boxes (FBD) 202 7.6 Functions for program flow control (FBD) 211 8. Tags and data types 214 8.1 Operands and tags 214 8.2 Elementary data types 221 8.3 Compound data types 227 8.4 Parameter types 232 8.5 System data types 234 8.6 Hardware data types 235 9. Language-independent function description 236 9.1 Basic functions 236 9.2 Digital functions 258 9.3 Program flow control 296 10. Online operation, diagnostics and debugging 302 10.1 Connecting a programming device to the PLC station 303 10.2 Transferring project data 307 10.3 Hardware diagnostics 319 10.4 Debugging of control program 324 11. Communication 336 11.1 Overview 336 11.2 Open user communication 338 11.3 Point-to-point communication 345 12. Visualization 350 12.1 Introduction to visualization 350 12.2 Creating HMI tags and area pointers 356 12.3 Configuring Process screens 360 12.4 HMI functions 367 12.5 Completing HMI configuration 385 13. Appendix 392 13.1 Integral and technological functions 392 13.2 Global libraries 406 Index 410 |
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