PLC

1. Introduction to PLC
Workshop
• Done by Ayman Chehadeh 2022

2. Workshop Calendar
• The Workshop will be divided into 3 days:
• 1st day: History, introduction and usages of PLCs.
• 2nd day: Types of inputs/ outputs, and
introduction to PLC programming (Ladder).
• 3rd day: PLC modules, and continuation of PLC
programming (timers and counters).

3. Industrial Revolutions
• Our world has faced so far 4 industrial revolutions:
 1st industrial revolution (around 1780): transformed
our economy from agriculture to industry. Examples
of the outcomes of this stage: steam engines and
spinning machines
 2nd industrial revolution (around 1900): the
introduction of electricity and its involvement in
mass production. Examples of outcomes: electric
motors, electric machines.
 3rd industrial revolution (around 1970): the
introduction of computerized systems. Where the
PLC was created. Examples: PLCs, Calculators,
Computers…
 4th industrial revolution (around 2010): we are living
it, the introduction of smart machines and
connection to the cloud. Examples: smart phones,
big data storages

4. History and
Introduction to PLCs
• PLC is a programmable Logic Controller.
Considered as the brain of any machine, it decides
all the operations of a certain machine based on
its inputs and according to its logic.
• 1st PLC was created in 1960 by Modicon for
General Electric Company.

5. Advantages of using
PLCs
• Flexibility
• Cost
• Communication
• Response Time
• Troubleshooting
• Reliable
• Easy to learn and program

6. Usage of PLCs
• Industrial Factories
• Power Stations
• Water Management Plants
• Oil and Gas Industries
• Automatic Car Washing Machines

7. Top 5 PLC Brands
Worldwide
1.Siemens.
2.Rockwell Automation / Allen Bradley.
3.Mitsubishi Electric.
4.Schneider Electric.
5.Omron.

8. Logic Gates
• Logic gates are the basic building blocks of any
digital system.
• Most of the logic gates consists of two inputs
and one output (digital)
• Logic gates are used for simple control of
simple tasks.

9. Logic Gates
• Truth table of logic gates determine the job of
each gate

10. PLC Programming
• Most of the PLCs can be programmed using
different languages, but the most used
language is Ladder.
• Ladder programming is a graphical Language,
so we draw rather than we write a code!
• Ladder Programming consists of left and right
side. Where in the left side we put all the
inputs and on the left side we put the outputs

11. Any Questions!
Thank you!