Practical_modern_SCADA_protocols_-_dnp3,_60870-5_and_Related_Systems

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306 Practical Modern SCADA Protocols: DNP3, 60870.5 and Related Systems Type Number T101 Equivalent* Type Number Description 58 59 60 61 62 63 45 Single command with time tag CP56Time2a 46 47 48 49 50 D ouble com m and w ith tim e tag CP56Tim e2a Regulating step command with time tag CP56Time2a Set Point Commands, norm alised value with time tag CP56Time2a Set Point Commands, scaled value with time tag CP56Time2a Set Point Commands, short floating-point number with time tag CP56Time2a 64 51 Single command with time tag CP56Time2a *Same function w ithout the tim e tag Table 9.3 Command with time-tag ASDU types 9.4.7 Clock synchronization Clock synchronization over networks is likely to be less reliable due to variable delays that occur due to queuing at network routing points. However, network service providers can specify worst case time delays, and provided that these are acceptable, then clock synchronization from the master station still makes sense. The clock synchronization function of T101 is largely retained, except that the link level functionality is removed.
10 Differences between DNP3 and IEC 60870 Objectives When you have completed study of this chapter you should be able to: • List the main differences between the DNP3 and the IEC 60870 standards • List the main similarities between the DNP3 and the IEC 60870 standards 10.1 Comparing DNP3 and IEC 60870 10.1.1 General similarities DNP3 and IEC 60870 have many similarities at a functional level, as well as in some technical details. These arise quite naturally from the common task that they provide a means of achieving. They also were developed out of the same basic framework and have some similarities in their message frames. It is probably useful, therefore, to begin by identifying their common features. Common features of DNP3 and T101: • High security data transmission (higher in DNP3) • Polled and report-by-exception operation • Unsolicited messages (limited in T101) • Object based data definitions suitable for SCADA • Time synchronization • Time-stamped events • Freeze and clear counters • Select before operate control action • Data groups or classes • File download and upload In functional terms at least, it is clear that the two protocols have many similarities.
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Practical Modern SCADA Protocols: D
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Practical Modern SCADA Protocols: D
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Contents Preface ..................
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Contents vii 12.6 Frame reception .
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Preface ix Chapter 3: Open SCADA pr
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1 Introduction Objectives When you
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Introduction 3 Figure 1.2 PC to IED
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Introduction 5 The interconnection
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Introduction 7 a number of sub-path
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Introduction 9 The Internet protoco
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Introduction 11 Outside the utiliti
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Fundamentals of SCADA communication
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Key features of SCADA software incl
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2.2.2 Control processor unit (or CP
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2.5.2 Multi-point architecture (Mul
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2.6 Communication philosophies Fund
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Pin 8 - Data carrier detect (DCD) F
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2.7.6 Synchronous communications 2.
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The two most common modes of operat
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2.8.3 Error control/flow control Fu
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3 Open SCADA protocols DNP3 and IEC
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3.2.2 DNP 3.0 and IEC 60870 protoco
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4.2 Interoperability and open stand
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Preview of DNP3 69 The DNP3 User Gr
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Preview of DNP3 71 The capability t
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5 Fundamentals of distributed netwo
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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 60870-5 213 8.5
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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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Page 277 and 278: Fundamentals of IEC 60870-5 261 Typ
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Page 303 and 304: 9.1.1 Station initialization Advanc
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Page 307 and 308: Advanced considerations of IEC 6087
Page 311 and 312: In Figure 9.4 the following time sy
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Page 325 and 326: Data objects: Differences between D
Page 327 and 328: 10.2 Which one will win? Difference
Page 329 and 330: Intelligent electronic devices (IED
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Page 333 and 334: Ethernet and TCP/IP networks 317 tr
Page 335 and 336: Ethernet and TCP/IP networks 319 Th
Page 337 and 338: Ethernet and TCP/IP networks 321 Fi
Page 339 and 340: 12.2.5 10Broad36 12.2.6 1Base5 Ethe
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Page 343 and 344: Ethernet and TCP/IP networks 327 As
Page 345 and 346: 12.8.4 Length Ethernet and TCP/IP n
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Page 349 and 350: 12.11.8 Fast Ethernet Ethernet and
Page 351 and 352: 12.12 TCP/IP Ethernet and TCP/IP ne
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Page 365 and 366: 13 Fieldbus and SCADA communication
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Fieldbus and SCADA communications s
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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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