This document provides an overview of programmable logic controllers (PLCs) and supervisory control and data acquisition (SCADA) systems. It defines a PLC as an industrial computer that monitors inputs, makes decisions based on programming, and controls outputs to automate processes. Major PLC components include a power supply, processor, memory, and input/output modules. PLCs are commonly programmed using ladder logic and languages like RSLogix 500. SCADA systems allow remote monitoring, access, and data collection across sites for processes. They provide graphical displays and critical situation control capabilities.

1. Presentation On
PLC & SCADA
Represented by :
Himansh Chourasiya

2. Content
• What is PLC
• Need of PLC
• Major components in PLC
• PLC input/ output component
• Programming languages & example
• Advantages
• What is SCADA
• Software & example

3. • PLC is stands for programabel logic controller
• PLC is a industrial computer that monitor input
makes decision based on it program and control
output automation process or machine
What is PLC

4. NEED OF PLC
• PLC is needed as to have following task:
• To reduce human effort
• To get the automation
• To get the automation in the process
• Controlling of equipment with one click
• To make the efficient use of digital electronic and
control system
• To reduce complex circuit of entire system

5. O M
U O
T D
P U
U L
T E
Power
supply
PROCESSOR
M
O
D
U
L
E
I
N
P
U
T
PROGRAMMING
DEVICE
For SENSER
To OUTPUT
Major component in PLC

6.  Limit switch
 Pulse button
PLC input component

7. Relay’s
Led’s
PLC output component

8. PLC Programming Software
• RSLogix 500
Allen Bradley
• Modsoft
Mosicon
• Powerlogic
Square D

9. • PLC use ladder logic
• This is based on relay control schemes
• Relay contacts and coils, input and output lie on
“rungs”between the positive and groung rails
• Two basic relay symbol
LADDER LOGIC DIAGRAM

10. LADDER LOGIC EXAMPLE

11. • Large quantities of contact
• Lower cost
• Visual Observation
• Communication capability
• Reprogrammable
Advantages of PLC

12. • Operator/s,
• Engineer/s
Supervisory
• Monitoring ,
• Remote access
Control
• Sending data into different
sites through telemetry
Data
acquisition
What is SCADA
•Supervisory Control and Data Acquisition

13. SCADA Software
• By Rock well
RSView 32
• By InTouch
Wonder ware
• By Citect
Citect SCADA 5.42

14. • Data can be display at any time when user require
• The SCADA system provides on board graphical
information
• The SCADA system provides ability to operates critical
situation
Advantage of SCADA

15. SCADA example