Programmable Logic Controller (PLC): 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. Given: The following motor control specifications must be satisfied by the ladder logic program. Three start/stop pushbutton stations are used to start and stop the motor. One Normally Open (NO) start pushbutton and one Normally Closed (NC) stop pushbutton will be contained by each start/stop station. Motor OL contacts are hardwired.

Question

Homework Problem 1 Create a PLC program, ladder logic and timing diagram for the following light output using timers. Light Status- (*=On) (0=Off) 0-5 Seconds 5-10 Seconds 10-15 Seconds 15-20 Seconds 20- Seconds 0000 0 ** 0 • 00* 00 od

Answer 1

Question

Chapter 6, Problem 7P

Program Plan Intro

Programmable Logic Controller (PLC):

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.

Given:

The following motor control specifications must be satisfied by the ladder logic program.

Three start/stop pushbutton stations are used to start and stop the motor.

One Normally Open (NO) start pushbutton and one Normally Closed (NC) stop pushbutton will be contained by each start/stop station.

Motor OL contacts are hardwired.

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