RTU Components

actuallyabandonedElectronics - Devices

Nov 15, 2013 (3 years and 10 months ago)

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

SCADA MODEL
SYSTEM COMPONENTS


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

RTU
Remote Terminal Unit


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



What is a RTU?



Where does it fit in a SCADA System?



RTU components



Basic types of RTU modules

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

RTU Components


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



Power supply



Back
-
up battery



Radio module



4


15 I/O modules

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

RTU Modules


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



Digital Modules


two I/O states



Digital Monitor Module (DMM)



Digital Control Module (DCM)



Pulse Accumulator Module (PAM)

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

RTU Modules


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



Support Modules


no I/O functions



Power Supply Module (PSM)



Radio Interface Module (RIM)



Computer Interface Module (CIM)



Bus Extender Module (BIM)

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

RTU Modules


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



Analog Modules


numerical control/monitor



Analog Monitor Module (AMM)



Analog Control Module (ACM)

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

RTU Modules


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



Controllers


Logical modules perform complete closed


loop, automatic control functions



Pump Control Module (PCM)



Programmable Logic Controller (PLC)



Pump Control Unit (PCU)

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

PLC
Programmable Logic Controller


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



What is a PLC?



History of PLCs



Where does it fit in SCADA Systems?



PLC architecture

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

PLC Architecture


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY

Control

unit

Input

devices

Output

devices

Data

memory

Program

memory

Process actuators

Process sensors

Programming module or PC

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

MTU
Master Terminal Unit


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



What is a MTU?



Where does it fit in a SCADA System?



MTU components

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

MTU Components


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



Operator



Personal Computer



Human Machine Interface (HMI)



Historical Datalogging



Monitoring



Limited Control

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

COMMUNICATION

SYSTEMS


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



PSTN Network



Leased Lines



Internet



Wireless



LAN



Global System for Mobiles (GSM)



Radio modems

13

SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

COMMUNICATION

COMPONENTS


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



FieldBus



What is FieldBus?



History of FieldBus



Advantages



Topologies (Bus/Daisy Chain/Tree)



Where does it fit in a SCADA System?

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

FIELDBUS

What it is?


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



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

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

FIELDBUS

History


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



1940s pressure signals 3
-
15 psi



1960s the 4
-
20 mA analogue signals



1970s digital processors for centralized


control.

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

FIELDBUS

Advantages


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



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

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

FIELDBUS

TOPOLOGIES


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY

18

SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

FIELDBUS

TOPOLOGIES


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY

19

SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

FIELDBUS

TOPOLOGIES


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY

20

SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

FIELDBUS

TOPOLOGIES


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY

21

SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

COMMUNICATION

COMPONENTS


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



Ethernet



What is Ethernet?



History of Ethernet



Non
-
deterministic



Topologies



Where does it fit in a SCADA System?

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

ETHERNET

What it is?


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



Type of network cabling



It is a Local Area Network LAN



It is the Physical and the Data Link Layer

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

ETHERNET

History


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



XEROX in the 1970’s



Network cabling and signaling



IEEE 802.3 standard

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

ETHERNET

Topology


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY

Thick Ethernet Segment


Bus Topology

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

ETHERNET

Topology


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY

Thin Ethernet Segment


Bus Topology

26

SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

ETHERNET

Topology


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY

10Base
-
T (also Fiber)


Star Topology

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

COMMUNICATION

PROTOCOLS


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



User Datagram Protocol (UDP)



Modicon Bus (MODBUS)



Distributed Network Protocol (DNP 3.0)

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

Protocol Defined


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY

A set of conventions governing the treatment and

expecially the formatting of data in an electronic

communication system.






(Merriam Webster 10
th

Ed.)

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COMPARISON OF NON
-
PROPRIETARY SCADA PROTOCOLS


Feature


UDP


DNP 3.0


MODBUS

OSI Layers

1

3

1

# Users

Unlimited

1000s

>500

Time Stamped Events

NO

YES

NO

Peer 2 Peer

NO

YES

NO

Unsolicited Slaves Do
Not Need To Be Polled

NO

YES

NO

Secure File Transfer

NO

YES

NO

Broadcast Capability

YES

YES

NO

File Segmentation

NO

YES

NO? (
dnp users
)

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

Data Framing


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY

Modbus Data Frame

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SCADA MODEL SYSTEM COMPONENETS (MATTHEW LESSARD, ILIA DORMISHEV, KRENAR KOMONI)

Performance Characteristics


NORWICH UNIVERISTY CENTER OF EXELLENCE IN DISTRIBUTED CONTROL SYSTEM SECURITY



SPEED


UDP


SECURITY


DNP 3.0


FLEXIBILITY


DNP 3.0



TEACHING CAPACITY?


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CONCLUSION






Discussion/Questions