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Practical_modern_SCADA_protocols_-_dnp3,_60870-5_and_Related_Systems

Fundamentals of

Fundamentals of SCADA communications 19 Figure 2.7 Components that could need maintenance in a SCADA system 2.2 Remote terminal units 2.2.1 Introduction An RTU (sometimes referred to as a remote telemetry unit or remote terminal unit) is a stand-alone data acquisition and control unit, generally microprocessor based, that monitors and controls equipment at a remote location. Its primary task is to control and acquire data from process equipment at the remote location and to transfer this data back to a central station. It generally also has the facility for having its configuration and control programs dynamically downloaded from some central station. Although, traditionally,

20 Practical Modern SCADA Protocols: DNP3, 60870.5 and Related Systems the RTU communicates back to some central station, it is also possible to communicate on a peer-to-peer basis with other RTUs. The RTU can also act as a relay station (sometimes referred to as a store and forward station) to another RTU that may not be accessible from the central station. Small RTUs generally have less than 10 to 20 analog and digital signals; medium sized RTUs have 100 digital and 30 to 40 analog inputs. Any RTU with more inputs is referred to as ‘large’. A typical RTU configuration is shown in the figure below: Figure 2.8 Typical RTU hardware structure Typical RTU hardware modules include a control processor and associated memory, analog inputs, analog outputs, counter inputs, digital inputs, digital outputs, communication interface(s), power supply, as well as an RTU rack and enclosure.

  • Page 2 and 3: Practical Modern SCADA Protocols: D
  • Page 4 and 5: Practical Modern SCADA Protocols: D
  • 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
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  • Page 28 and 29: Key features of SCADA software incl
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  • Page 54 and 55: The two most common modes of operat
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  • Page 74 and 75: 3 Open SCADA protocols DNP3 and IEC
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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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    Fundamentals of distributed network

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    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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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    The message sequences are shown in

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    These rules are illustrated in the

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Freeze functions are typically used

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    Fundamentals of distributed network

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    6 Advanced considerations of distri

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    Advanced considerations of distribu

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    Advanced considerations of distribu

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    Advanced considerations of distribu

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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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    Advanced considerations of distribu

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    Advanced considerations of distribu

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    Advanced considerations of distribu

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    Advanced considerations of distribu

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    Advanced considerations of distribu

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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 60870-5 209 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 60870-5 241 Typ

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    Fundamentals of IEC 60870-5 243 Typ

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    Fundamentals of IEC 60870-5 245 Typ

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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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    Fundamentals of IEC 60870-5 251 Typ

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    Fundamentals of IEC 60870-5 253 Typ

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    Fundamentals of IEC 60870-5 255 Val

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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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    Fundamentals of IEC 60870-5 261 Typ

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    Fundamentals of IEC 60870-5 263 Typ

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    Fundamentals of IEC 60870-5 265 Typ

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    Fundamentals of IEC 60870-5 267 8.7

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    Fundamentals of IEC 60870-5 269 Typ

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    Fundamentals of IEC 60870-5 271 Typ

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    Fundamentals of IEC 60870-5 273 Typ

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    Fundamentals of IEC 60870-5 275 Typ

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    Fundamentals of IEC 60870-5 277 Typ

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    Fundamentals of IEC 60870-5 279 Typ

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    Fundamentals of IEC 60870-5 281 Typ

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    Fundamentals of IEC 60870-5 283 Typ

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    Fundamentals of IEC 60870-5 285 Val

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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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    Advanced considerations of IEC 6087

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    In Figure 9.4 the following time sy

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    Advanced considerations of IEC 6087

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    Basic application functions: 9.2.3

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    Advanced considerations of IEC 6087

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    Advanced considerations of IEC 6087

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    Advanced considerations of IEC 6087

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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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    Fieldbus and SCADA communications s

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    • Programmable logic controllers

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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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    Applications of DNP3 and SCADA prot

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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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    Applications of DNP3 and SCADA prot

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    Applications of DNP3 and SCADA prot

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    Applications of DNP3 and SCADA prot

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    Applications of DNP3 and SCADA prot

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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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    Appendix C: Sample device profile d

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    Appendix C: Sample device profile d

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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 439 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 495 Click on

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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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