This presentation provides an overview of programmable logic controllers (PLCs) and supervisory control and data acquisition (SCADA) systems. It defines a PLC as a microprocessor-based computer used to control machines and processes. The key components of a PLC system are outlined as the processor, input/output modules, chassis, power supply, and programming software. Input modules interface with sensors while output modules interface with devices like motors. PLCs are programmed using ladder logic to perform functions like on/off control, timing, and counting. The presentation concludes with applications of PLCs and an invitation for questions.
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01351207320_Sudhanshu Sharma.pptx
1. A Presentation on PLC &
SCADA
Guided By:
VAIBHAV MISRA
Sofcon India Pvt Ltd.
Presented By:
SUDHANSHU SHARMA
01351207320
ECE-3rd/4th Year
12/10/2022 INDUSTRIAL TRAINING 2022 1
2. PROGRAMMABLE LOGIC
CONTROLLER
A PLC is a microprocessor based, mini-computer specifically
tailored specifically for certain control tasks
It uses programmable memory to store instructions and specific
functions that include On/Off control, timing, counting, sequencing,
arithmetic and data handling to control machines and processes.
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3. COMPONENTS OF PLC
There are five basic components in a PLC system:
The PLC processor, or controller
I/O (Input /Output) modules
Chassis or backplane
Power supply
Programming software that runs in a PC
In addition to these 5, most PLCs also have:
A network interface
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5. INPUT MODULES
Input modules interface directly to devices such as switches and
temperature sensors.
Input modules convert many different types of electrical signals such
as 120VAC, 24VDC, or 4-20mA, to signals which the controller can
understand.
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6. OUTPUT MODULES
Output modules interface directly to devices such as motor starters and
lights
Output modules take digital signals from the PLC and convert them to
electrical signals such as 24VDC and 4 mA that field devices can
understand.
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