Programmable Logic Controllers - With Access
5th Edition
ISBN: 9781259933523
Author: Petruzella
Publisher: MCG
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Chapter 9, Problem 10RQ
Program Plan Intro
a.
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.
Program Plan Intro
b.
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.
Program Plan Intro
c.
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.
Program Plan Intro
d.
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.
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Chapter 9 Solutions
Programmable Logic Controllers - With Access
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- When the specified math instruction performs the desired operation. Where is the value stored? Talking about PLCS like Allen Bradley and Siemensarrow_forwardConstruct a basic stop/start seal-in circuit. Energize an internal relay to seal-in (latch) the circuit. write the circuit in both Ladder Logic and Function Block Diagram (FBD). Hardware setup: Input 1 - Normally closed stop pushbutton, Input 2 - Normally open start pushbutton. Output 1 - A Red light to indicate the circuit is not energized. Output 2 - A Green light to indicate the circuit is energized. Label all inputs and outputs in the plc program. Write the program in both ladder and function block diagram (FBD).arrow_forward5 lamps are lit at intervals of 2 seconds with the start button. When all 5 lamps are lit, it waits for 5 seconds and continues to light up with 2 second intervals from the 1st lamp. If sensor 1 is active while lamp 1 is on, lamp 3 will continue to operate as above, without lamp number 2 turning on. with stop buttonlamps will be turned off at any time.draw the plc ladder diagram accordingly.arrow_forward
- Discuss in detail the components of a PLC with suitable sketch.arrow_forwardDescribe the sequence of timing signals of 8155 programmable devices when it reads or writes to an I/O port in handshake mode. Also determine the states of status word, control word. What will be the control word for 8155 timer?arrow_forwardWhat are some good and bad applications of PLCs?arrow_forward
- PLCs use two basic types of instructions: contacts coilsDifferentiate the two types of instruction.arrow_forwardDescribe the time signal sequence used by 8155 programmable devices when they read or write to an I/O port in handshake mode. Determine the statuses of the status and control words as well. What will the control word for the 8155 timer be?arrow_forwardWrite a Ladder Logic PLC program for each of the following scenarios. Label all contacts and coils in the PLC program. Scenario 1 Turn on a light when either one of two switches (I1, I2) is toggled on (construct an OR Gate). Turn on a second light when both switches (Same inputs I1, I2) are toggled on (construct an AND Gate). Turn on a third light when both switches (Same inputs I1, I2) are toggled off (construct a NOR Gate). Turn on a fourth light when either switch (Same inputs I1, I2) is toggled off (construct a NAND Gate). Print a copy of the program showing the construction of the four gate configurations. Also, submit a truth table for the four input configurations. Then modify your program so, only one light turns on at a time as you toggle the four truth table states. Scenario 2 Construct a seal-in circuit using a stop-and-start pushbutton and an internal coil to seal in. Turn on a light for 10 seconds when the start button is pushed then turn it off automatically or…arrow_forward
- Write an ISR for a button 4 and 5 press in ARM Assembly. You do not need to create the setup code. Just provide the ISR code. The ISR should increment the PWM duty cycle of LED 0 by an additional 10% every time BTN 5 is pressed and decrement the PWM duty cycle of LED 0 by 10% every time BTN 4 is pressed.arrow_forwardRB4 is connected to a pulse generator and pin RB1 is connected to a led, write a program to toggle the led on the falling and rising edge of the pulse (using interrupts).arrow_forward19.a. If the RUN light on the CPU of a PLC is not illuminated, what should be your next action or check?A. Check the power supply's indicator light.B. Replace the CPU.C. Issue a START command at the console or laptop.D. Check for a COMM error light.arrow_forward
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