Practical_modern_SCADA_protocols_-_dnp3,_60870-5_and_Related_Systems

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Fundamentals of SCADA communications 27 Figure 2.14 Sub-master architecture Figure 2.15 Typical structure of the master station
28 Practical Modern SCADA Protocols: DNP3, 60870.5 and Related Systems The master station has the following typical functions: • Establishment of communications, which involves configuring each RTU, initializing each RTU with input/output parameters, as well as downloading control and data acquisition programs to the RTU • Operation of the communications link, which involves (in a master–slave arrangement) polling each RTU for data and writing to the RTU, logging alarms and events to hard disk (and operator display if necessary), as well as linking inputs and outputs at different RTUs automatically • Diagnostics, which involve accurate diagnostic information on failure of RTU and possible problems, as well as predicting potential problems such as data overloads There are three components to the master station software, namely the operating system software, the system SCADA software (suitably configured) and the SCADA application software. There is also the necessary firmware (such as BIOS) which acts as an interface between the operating system and the computer system hardware. The operating system software will not be discussed further here. Good examples of these are DOS, Windows 95/98/2000, Windows NT, LINUX and UNIX. The System SCADA software refers to the software put together by the particular SCADA system vendor and then configured by a particular user. Generally it consists of four main modules namely data acquisition, control, archiving (or database storage) and the man machine interface (MMI) which is more politically correctly known as the human machine interface. 2.5 Communication architectures There are three main physical communication architectures that can be combined in one communication system. They are: 2.5.1 Point-to-point architecture This is the simplest configuration, where data is exchanged between two stations only. One station can be setup as the master and one as the slave. It is possible for both stations to communicate in full-duplex mode (transmitting and receiving on two separate frequencies) or half-duplex with only one frequency. Figure 2.16 Point-to-point (two stations)
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Page 6 and 7: Contents Preface ..................
Page 8 and 9: Contents vii 12.6 Frame reception .
Page 10 and 11: Preface ix Chapter 3: Open SCADA pr
Page 12 and 13: 1 Introduction Objectives When you
Page 14 and 15: Introduction 3 Figure 1.2 PC to IED
Page 16 and 17: Introduction 5 The interconnection
Page 18 and 19: Introduction 7 a number of sub-path
Page 20 and 21: Introduction 9 The Internet protoco
Page 22 and 23: Introduction 11 Outside the utiliti
Page 24 and 25: Fundamentals of SCADA communication
Page 28 and 29: Key features of SCADA software incl
Page 32 and 33: 2.2.2 Control processor unit (or CP
Page 40 and 41: 2.5.2 Multi-point architecture (Mul
Page 42 and 43: 2.6 Communication philosophies Fund
Page 50 and 51: Pin 8 - Data carrier detect (DCD) F
Page 52 and 53: 2.7.6 Synchronous communications 2.
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Page 56 and 57: 2.8.3 Error control/flow control Fu
Page 74 and 75: 3 Open SCADA protocols DNP3 and IEC
Page 76 and 77: 3.2.2 DNP 3.0 and IEC 60870 protoco
Page 78 and 79: 4.2 Interoperability and open stand
Page 80 and 81: Preview of DNP3 69 The DNP3 User Gr
Page 82 and 83: Preview of DNP3 71 The capability t
Page 84 and 85: 5 Fundamentals of distributed netwo
Page 86 and 87: Fundamentals of distributed network
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Fundamentals of distributed network
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5.3.6 Full-duplex procedures Fundam
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The message sequences are shown in
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These rules are illustrated in the
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Freeze functions are typically used
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6 Advanced considerations of distri
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Advanced considerations of distribu
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6.2 Interoperability between DNP3 d
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6.3.2 Data classes and events Advan
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Recommendations: 6.3.9 Multiple obj
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6.3.15 Time-tagged binary input eve
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Preview of IEC 60870-5 171 7.2 Stan
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Preview of IEC 60870-5 173 Under IE
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Preview of IEC 60870-5 175 over cor
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8 Fundamentals of IEC 60870-5 8.1 T
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Fundamentals of IEC 60870-5 179 8.1
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8.1.9 IEC 60870-5-101 1995 Fundamen
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Fundamentals of IEC 60870-5 183 pro
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Fundamentals of IEC 60870-5 185 MAS
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8.4 Data link layer Fundamentals of
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8.4.2 Order of information Fundamen
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8.4.5 Unbalanced and balanced trans
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Fundamentals of IEC 60870-5 193 Sta
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Station/link initialization, balanc
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Fundamentals of IEC 60870-5 197 The
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Fundamentals of IEC 60870-5 199 To
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Function codes from secondary stati
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Fundamentals of IEC 60870-5 203 is
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The following notes apply to these
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Fundamentals of IEC 60870-5 207 Typ
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Fundamentals of IEC 60870-5 211 Whe
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Fundamentals of IEC 60870-5 215 to
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Fundamentals of IEC 60870-5 217 Mas
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Fundamentals of IEC 60870-5 219 Qua
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Fundamentals of IEC 60870-5 221 Key
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Fundamentals of IEC 60870-5 223 SVA
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Fundamentals of IEC 60870-5 225 Key
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Fundamentals of IEC 60870-5 227 DCO
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8.6.4 Qualifier information element
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Key - QOC Qualifier of command QU Q
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Fundamentals of IEC 60870-5 233 SCQ
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Fundamentals of IEC 60870-5 235 LOF
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Fundamentals of IEC 60870-5 237 FBP
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Fundamentals of IEC 60870-5 239 In
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Fundamentals of IEC 60870-5 247 Val
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Type 11 Measured, scaled value Fund
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Type 20 Packed single-point with st
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Fundamentals of IEC 60870-5 259 Pro
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9.1.1 Station initialization Advanc
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9.1.2 Data acquisition Advanced con
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Advanced considerations of IEC 6087
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In Figure 9.4 the following time sy
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Basic application functions: 9.2.3
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10 Differences between DNP3 and IEC
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Data objects: Differences between D
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10.2 Which one will win? Difference
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Intelligent electronic devices (IED
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11.2.5 Communications Intelligent e
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Ethernet and TCP/IP networks 317 tr
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Ethernet and TCP/IP networks 319 Th
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Ethernet and TCP/IP networks 321 Fi
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12.2.5 10Broad36 12.2.6 1Base5 Ethe
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Ethernet and TCP/IP networks 325 si
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Ethernet and TCP/IP networks 327 As
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12.8.4 Length Ethernet and TCP/IP n
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Ethernet and TCP/IP networks 331 To
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12.11.8 Fast Ethernet Ethernet and
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12.12 TCP/IP Ethernet and TCP/IP ne
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Ethernet and TCP/IP networks 337
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Ethernet and TCP/IP networks 339 Fi
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Here follows a brief description of
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Unicast addresses Ethernet and TCP/
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The three common fields are: Ethern
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Ethernet and TCP/IP networks 347 Th
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13 Fieldbus and SCADA communication
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Fieldbus and SCADA communications s
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• Programmable logic controllers
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Three such ‘services’ are readi
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Figure 13.9 High speed Ethernet and
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14.2 UCA development UCA protocol 3
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14.3.1 Uniform communications infra
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UCA protocol 367 14.3.4 Uniform app
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14.3.5 Uniform data model UCA proto
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Figure 14.6 Device object model ove
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UCA protocol 373 An excellent refer
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Applications of DNP3 and SCADA prot
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PDS 500 Data Map Applications of DN
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16 Future developments Objectives W
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Appendix A Glossary 3GPP 10Base2 10
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Appendix A: Glossary 395 ATM Attenu
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Appendix A: Glossary 397 Capacitanc
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Appendix A: Glossary 399 Decibel (d
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Appendix A: Glossary 401 ESS Etherl
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Appendix A: Glossary 403 I/O addres
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Manchester encoding Appendix A: Glo
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Appendix A: Glossary 407 Packet PAD
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Appendix A: Glossary 409 RFI Ring R
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Appendix A: Glossary 411 TDMA TDR T
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Appendix A: Glossary 413 X.25 CCITT
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Appendix B: Implementers of DNP3 41
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Appendix B: Implementers of DNP3 41
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DNP3 device profile Appendix C: Sam
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Appendix C: Sample device profile d
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Software setup Appendix D: Practica
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Appendix D: Practicals 431 1. Set u
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Objectives • To show how a basic
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Implementation/setting up TCP/IP Cl
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Appendix D: Practicals 437 Click on
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Appendix D: Practicals 441 Now rese
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Appendix D: Practicals 443 Practica
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Appendix D: Practicals 445 This sho
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Appendix D: Practicals 447 Once you
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IMPORTANT NOTICE: Appendix D: Pract
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Appendix D: Practicals 451 (This is
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Appendix D: Practicals 453 PRACTICA
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Click on the Diags button and the f
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Appendix D: Practicals 457 The scre
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Appendix D: Practicals 459 Assume t
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Appendix D: Practicals 461 Problem
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Network Loading Assumptions Item Da
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2. IEC 60870-5-101 Packet Analysis
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3.1.1.1.1 Appendix D: Practicals 46
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Appendix D: Practicals 469 Valid Ca
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3.1.1.1.7 Type 14 INFORMATION OBJEC
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Appendix D: Practicals 473 3.1.1.1.
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Appendix D: Practicals 475 QDS Qual
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Appendix D: Practicals 477 7 6 5 4
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3.1.1.1.11 Communication 1 Appendix
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Communication 1 Answer Appendix D:
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CITECT PRACTICAL For Citect Version
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Appendix D: Practicals 485 Next cli
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Appendix D: Practicals 487 (3) Defi
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Appendix D: Practicals 489
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Appendix D: Practicals 491 (4) Crea
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Appendix D: Practicals 493 Use the
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Appendix D: Practicals 497 When fin
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Appendix D: Practicals 499 What is
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Communication 2 05640DC405001A00637
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05640DC405001A006378C6C601010200003
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Appendix D: Practicals 505 What are
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Appendix D: Practicals 507 01 01 01
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Appendix D: Practicals 509 E2 81 00
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Appendix D: Practicals 511 At fist
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Appendix D: Practicals 513 Then rem
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Appendix D: Practicals 515 The next
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Packet Interpretation Practical App
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056408C40300A200EA80C5C5171E4405641
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Appendix D: Practicals 521 Communic
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05640DC405001A006378C6C601010200003
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Appendix D: Practicals 525 What is
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01 01 01 01 01 01 01 crc:BB crc:C3
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Appendix D: Practicals 529 Read Dat
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Index 531 Carrier sense with multip
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Index 533 support for protocol, 310
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Index 535 process related, 220 bina
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Index 537 signal quality detector,
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