Practical Modern SCADA Protocols

Table of contents :
Cover……Page 1
Contents……Page 6
Preface……Page 9
Acknowledgements……Page 11
1.2 SCADA systems……Page 12
1.3 Open systems and communications standards……Page 15
1.4 IEC 60870.5 and DNP3.0……Page 17
1.5 Local area networks, Ethernet and TCP/IP……Page 19
1.6 UCA protocol……Page 21
2.1 SCADA systems……Page 23
2.2 Remote terminal units……Page 30
2.3 PLCs used as RTUs……Page 36
2.4 The master station……Page 37
2.5 Communication architectures……Page 39
2.6 Communication philosophies……Page 42
2.7 Basic standards: RS-232 and RS-485……Page 46
2.8 SCADA protocols……Page 53
2.9 The open systems interconnection model……Page 67
3.1 Interoperability and open standards……Page 74
3.2 Development of standards……Page 75
4.1 What is DNP3?……Page 77
4.2 Interoperability and open standard……Page 78
4.3 Benefits of DNP3……Page 79
4.4 Features of DNP3……Page 80
4.5 System topology……Page 81
4.6 Background and development……Page 82
4.7 Why use DNP3?……Page 83
5.1 Fundamental concepts……Page 84
5.2 Understanding DNP3 message structure……Page 89
5.3 Physical layer……Page 91
5.4 Data link layer……Page 94
5.5 Transport layer (pseudo-transport)……Page 109
5.6 Application layer message handling……Page 111
5.7 Application layer message functions……Page 122
5.8 Data object library……Page 139
6.1 DNP3 sub-set definitions……Page 154
6.2 Interoperability between DNP3 devices……Page 164
6.3 Implementation rules and recommendations……Page 165
6.4 Conformance testing……Page 170
6.5 DNP3 polling and communications options……Page 173
6.6 Time synchronization……Page 174
6.7 DNP3 over TCP/IP and UDP/IP……Page 175
7.1 What is IEC 60870-5?……Page 181
7.2 Standards……Page 182
7.3 System topology……Page 183
7.4 Message structure……Page 184
7.6 Networked version……Page 185
7.7 Application data objects……Page 186
7.8 Interoperability……Page 187
8.1 The IEC 60870-5 standard……Page 188
8.2 Protocol architecture……Page 193
8.3 Physical layer……Page 195
8.4 Data link layer……Page 198
8.5 Application layer……Page 214
8.6 Information elements……Page 228
8.7 Set of ASDUs……Page 248
9.1 Application functions……Page 297
9.2 Interoperability……Page 308
9.3 Other information sources……Page 310
9.4 Network operation……Page 311
10.1 Comparing DNP3 and IEC 60870……Page 318
10.2 Which one will win?……Page 322
11.1 Definition……Page 323
11.2 Functions……Page 324
12.1 IEEE 802.3 CSMA/CD (‘Ethernet’)……Page 327
12.2 Physical layer……Page 328
12.3 Signaling methods……Page 334
12.4 Medium access control……Page 335
12.6 Frame reception……Page 336
12.7 Collisions……Page 337
12.8 MAC frame format……Page 339
12.9 Difference between 802.3 and Ethernet……Page 340
12.11 Ethernet design rules……Page 341
12.12 TCP/IP……Page 346
13.2 Profibus……Page 360
13.3 Foundation fieldbus……Page 366
14.1 Introduction……Page 373
14.2 UCA development……Page 374
14.3 UCA technology……Page 375
14.4 Summary……Page 384
15.1 Water industry application……Page 385
16 Future developments……Page 402
Appendix A: Glossary……Page 404
Appendix B: Implementers of DNP3……Page 425
Appendix C: Sample device profile document……Page 429
Appendix D: Practicals……Page 439
Index……Page 541