This document provides an introduction to fundamentals of SCADA (Supervisory Control And Data Acquisition). It describes SCADA as software that collects and stores data from a system to control that system. The block diagram shows how sensors and actuators connect to RTUs, PLCs, and a server room/control room with HMIs over LAN/WAN. Key differences between PLC and SCADA are outlined, with PLC being hardware directly connected to field instruments to control outputs, while SCADA is software for monitoring and supervising over a visual interface. Main advantages of SCADA include data acquisition, remote access, efficiency gains, and reduced staffing needs. SCADA has applications in

1. Fundamentals of SCADA
Presented by:
J K SHREE

2. CONTENTS:
Introduction
Block Diagram
SCADA Software
Difference between SCADA and PLC
Advantages
Applications

3. INTRODUCTION
• SCADA: Supervisory Control And Data Acquisition
• SCADA is not a specific technology or protocol but refers to
any application where data is collected and stored from a
system in order to control that system.
• Example:

4. BLOCK DIAGRAM
RTU
PLC
TELEMETRY
DATA
ACQUISITION
PERSONAL
COMPUTER
SENSORS
&
ACTUATORS
SENSORS
&
ACTUATORS
Server Room
OR
Control Room
HMI
LAN
WAN

5. How does SCADA look???
Some available softwares: Tecna, Proficy, Sielco Sytem etc.

6. PLC & SCADA
• PLC - Programmable logic controller.
o Its a hardware, directly in contact with field instruments.
o It controls output according to the logic stored in PLC
Memory.
• SCADA - Supervisory control and data acquisition.
o Its a software, shows the output and feedback in Visual
manner, that PLC can't do.
o It monitors or supervises the devices and parameters of the
system
• Video on SCADA System.mp4

7. ADAVANTAGES
 Data acquisition
 Permits fewer employees to be more productive
 Simple monitoring, maintenance and operation
 Remotely accessible
 Increases the efficiency of process
APPLICATIONS
 Power grids
 Industries
 Automation
 Billing
Research
Hospitals
Geology

8. LEARNING OUTCOME
• What is SCADA?
• Importance of SCADA.
• Working and block diagram of SCADA.
• Difference between PLC and SCADA.

9. Queries
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