SCADA
SCADA : - Supervisory control and data acquisition, it is a type of computing system which is consist of monitoring software which monitor and control (PLC) Programmable Logic Controller. SCADA system function is to collect data and control at supervisory level.
HISTORY OF SCADA :-
In 1960 first time scada system introduce, the first scada system made
with minicomputers that time normal network services not available, Thus SCADA
systems were independent systems with no connecting service to other system.The first generation SCADA systems were developed
as ‘turn key’ operations which work on minicomputers pdp-11.
Second generation SCADA
system introduce with network connectivity services , information and commands
processing was distributed across multiple stations, these station was
responsible for a particular task. Second generation scada system is cheaper
than first generation scada system. The network protocols used in second
generation scada system were still not standardized. Security of scada system
unnoticed by the developers.
Third generation scada
system adopted more than one LAN(Local
Area Network) network called a process control network (PCN).
Fourth generation SCADA
system cloud computing available. SCADA adopted Internet of things (Iot) technology
for better data exchange. It provided with following results:-
1. Rise in usability
2. Faster
build/deployment
3. Great accuracy to
find critical data
4. Less time spent
navigation
SCADA Components :-
scada system consist of some
components---
- SCADA computers
- PLC(Programmable logic controllers)
- Remote terminal units
- Communication infrastructure
- HMI(Human-machine interface)
- RTU Programming
- Alarm handling
Application of SCADA
system:-
1.Scada system used in industries involve process control, Power generation,
manufacturing .
2.Infrastructure process involve water treatment etc, also electric power
transmission and distribution.
3.Facility process include space station, airports .They remotely monitor
and control AC(Air Condition) system and energy consumption.
Cyber attack on
SCADA system –
A malicious computer worm known as “stuxnet”
targets SCADA system in 2005. It damaged iran nuclear
program. Stuxnet malware is a remote accessing tool which take down the scada
softwares. It allows to control the processes such as those used to control machines on factory assembly lines and
centrifuges for divided into nuclear substances.
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