1. SCADA MODEL SYSTEM COMPONENTS
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
SCADA MODEL SYSTEM COMPONENTS
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

2. RTU Remote Terminal Unit
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
RTU Remote Terminal Unit
What is a RTU?
Where does it fit in a SCADA System?
RTU components
Basic types of RTU modules
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

3. RTU Components Power supply Back-up battery Radio module
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
RTU Components
Power supply
Back-up battery
Radio module
4 – 15 I/O modules
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

4. RTU Modules Digital Modules – two I/O states
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
RTU Modules
Digital Modules – two I/O states
Digital Monitor Module (DMM)
Digital Control Module (DCM)
Pulse Accumulator Module (PAM)
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

5. RTU Modules Support Modules – no I/O functions
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
RTU Modules
Support Modules – no I/O functions
Power Supply Module (PSM)
Radio Interface Module (RIM)
Computer Interface Module (CIM)
Bus Extender Module (BIM)
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

6. RTU Modules Analog Modules – numerical control/monitor
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
RTU Modules
Analog Modules – numerical control/monitor
Analog Monitor Module (AMM)
Analog Control Module (ACM)
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

7. NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
RTU Modules
Controllers – Logical modules perform complete closed loop, automatic control functions
Pump Control Module (PCM)
Programmable Logic Controller (PLC)
Pump Control Unit (PCU)
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

8. PLC Programmable Logic Controller
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
PLC Programmable Logic Controller
What is a PLC?
History of PLCs
Where does it fit in SCADA Systems?
PLC architecture
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

9. Programming module or PC
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
PLC Architecture
Data memory
Input devices
Process actuators
Control
unit
Output devices
Program memory
Process sensors
Programming module or PC
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

10. MTU Master Terminal Unit
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
MTU Master Terminal Unit
What is a MTU?
Where does it fit in a SCADA System?
MTU components
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

11. MTU Components Operator Personal Computer
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
MTU Components
Operator
Personal Computer
Human Machine Interface (HMI)
Historical Datalogging
Monitoring
Limited Control
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

12. COMMUNICATION SYSTEMS
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
COMMUNICATION SYSTEMS
PSTN Network
Leased Lines
Internet
Wireless
LAN
Global System for Mobiles (GSM)
Radio modems
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

13. COMMUNICATION COMPONENTS
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
COMMUNICATION COMPONENTS
FieldBus
What is FieldBus?
History of FieldBus
Advantages
Topologies (Bus/Daisy Chain/Tree)
Where does it fit in a SCADA System?
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

14. FIELDBUS What it is? It is a BUS.
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
FIELDBUS What it is?
It is a BUS.
A wire or set of wires connecting more than two devices
Replace existing 4-20 mA analogue signal
Serial Bus
Digital communication between devices
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

15. FIELDBUS History 1940s pressure signals 3-15 psi
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
FIELDBUS History
1940s pressure signals 3-15 psi
1960s the 4-20 mA analogue signals
1970s digital processors for centralized control.
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

16. FIELDBUS Advantages Reduces wiring
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
FIELDBUS Advantages
Reduces wiring
Online diagnostics out on individual field devices
Two-way communication between the field devices and the controllers
Deterministic – no collision and it is scheduled
It is getting widely used in process control
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

17. NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
FIELDBUS TOPOLOGIES
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

18. NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
FIELDBUS TOPOLOGIES
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

19. NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
FIELDBUS TOPOLOGIES
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

20. NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
FIELDBUS TOPOLOGIES
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

21. COMMUNICATION COMPONENTS
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
COMMUNICATION COMPONENTS
Ethernet
What is Ethernet?
History of Ethernet
Non-deterministic
Topologies
Where does it fit in a SCADA System?
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

22. ETHERNET What it is? Type of network cabling
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
ETHERNET What it is?
Type of network cabling
It is a Local Area Network LAN
It is the Physical and the Data Link Layer
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

23. ETHERNET History XEROX in the 1970’s Network cabling and signaling
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
ETHERNET History
XEROX in the 1970’s
Network cabling and signaling
IEEE standard
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

24. ETHERNET Topology Thick Ethernet Segment – Bus Topology
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
ETHERNET Topology
Thick Ethernet Segment – Bus Topology
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

25. ETHERNET Topology Thin Ethernet Segment – Bus Topology
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
ETHERNET Topology
Thin Ethernet Segment – Bus Topology
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

26. ETHERNET Topology 10Base-T (also Fiber) – Star Topology
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
ETHERNET Topology
10Base-T (also Fiber) – Star Topology
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

27. COMMUNICATION PROTOCOLS
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
COMMUNICATION PROTOCOLS
User Datagram Protocol (UDP)
Modicon Bus (MODBUS)
Distributed Network Protocol (DNP 3.0)
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

28. Protocol Defined A set of conventions governing the treatment and
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
Protocol Defined
A set of conventions governing the treatment and
expecially the formatting of data in an electronic
communication system.
(Merriam Webster 10th Ed.)
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

29. COMPARISON OF NON-PROPRIETARY SCADA PROTOCOLS
Feature
UDP
DNP 3.0
MODBUS
OSI Layers 1 3
# Users
Unlimited
1000s
>500
Time Stamped Events NO
YES
Peer 2 Peer
Unsolicited Slaves Do Not Need To Be Polled
Secure File Transfer
Broadcast Capability
File Segmentation
NO? (dnp users)

30. Data Framing Modbus Data Frame
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
Data Framing
Modbus Data Frame
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

31. Performance Characteristics
NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY
Performance Characteristics
SPEED  UDP
SECURITY  DNP 3.0
FLEXIBILITY  DNP 3.0
TEACHING CAPACITY?
SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

32. CONCLUSION
Discussion/Questions