Programmable Logic Controller (PLC): Programmable Logic Controller (PLC) is a specialized computer used in industrial segments to control machines and process. PLC is program that consists of a set of instructions which resembles the controlling functions needed to perform specific tasks. The function of PLC is similar to that of a relay and hence, in an industrial segment a relay is greatly replaced by a suitable PLC. When compared to general Personal Computer (PC), a PLC is available in small and tiny sizes. The basic architecture of a PLC consists of an input-output interface module and a small Central Processing Unit (CPU) that runs by controlling programming language. Sequencers: Programmable Logic Controller (PLC) sequencer performs ON or OFF output patterns using sequencer instructions. The sequencer output instruction is used for controlling the output devices. PLC sequencer instructions are used for controlling machines which provides a stepped sequence of repeatable operations. It simplifies the ladder program by allowing the user to use a single or pair of instructions for performing complex operations. Various sequencer instructions can be programmed based on the PLC manufacturer.

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Chapter 12, Problem 3RQ

Program Plan Intro

Programmable Logic Controller (PLC):

Programmable Logic Controller (PLC) is a specialized computer used in industrial segments to control machines and process.

PLC is program that consists of a set of instructions which resembles the controlling functions needed to perform specific tasks.

The function of PLC is similar to that of a relay and hence, in an industrial segment a relay is greatly replaced by a suitable PLC.

When compared to general Personal Computer (PC), a PLC is available in small and tiny sizes.

The basic architecture of a PLC consists of an input-output interface module and a small Central Processing Unit (CPU) that runs by controlling programming language.

Sequencers:

Programmable Logic Controller (PLC) sequencer performs ON or OFF output patterns using sequencer instructions.

The sequencer output instruction is used for controlling the output devices.

PLC sequencer instructions are used for controlling machines which provides a stepped sequence of repeatable operations.

It simplifies the ladder program by allowing the user to use a single or pair of instructions for performing complex operations.

Various sequencer instructions can be programmed based on the PLC manufacturer.

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