PROGRAMMABLE LOGIC CONTROLLERS-ACCESS
5th Edition
ISBN: 9781259680915
Author: Petruzella
Publisher: MCG
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Chapter 8, Problem 6RQ
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 control
programming language.
PLC counter:
- A counter is a PLC instruction which counts up or down when the input transfers from an off state (false) to an on state (true).
- The three different types of counters instructions are as follows:
- Up counter
- Down counter
- Combined counter
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Chapter 8 Solutions
PROGRAMMABLE LOGIC CONTROLLERS-ACCESS
Ch. 8 - Name the three forms of PLC counter instructions,...Ch. 8 - State four pieces of information usually...Ch. 8 - In a PLC counter instruction, what rule applies to...Ch. 8 - Prob. 4RQCh. 8 - When does the PLC counter instruction increment or...Ch. 8 - Prob. 6RQCh. 8 - Prob. 7RQCh. 8 - Prob. 8RQCh. 8 - Prob. 9RQCh. 8 - Prob. 10RQ
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- Create a PLC ladder logic diagram for an alarm that turns on when either A counts up to 10, or B counts down to 7.arrow_forwardDiscuss in detail the components of a PLC with suitable sketch.arrow_forwardDraw a plc ladder diagram for blinking lights with start and stop button. Please help me with this. Thank you in advanced.arrow_forward
- Describe the function and connection of the internal registers of the PLC. What parameters are relevant in the development of a PLC program? What requirements would you place on an integrated program development environment.arrow_forwardExplain the general structure of programmable controllers (PLC) by drawing figures. Write the names of the control elements to be connected to the input and output parts of the PLC. (Please type with keyboard so that I can understand.Thanks)arrow_forward1. Create a Ladder logic using below instruction -Function: A start, and a stop button is used for starting and stopping a motor. But makesure that the buttons can only start and stop the motor on a positive or rising edge.2. Briefly explain how the traffic light are working using PLC Program for Traffic LightControl. Include a diagram to your explanation.arrow_forward
- Draw a ladder diagram in PLC programming for manually operated standing A+B+B-A- cylinder sequence.arrow_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_forwardPLCs use two basic types of instructions: contacts coilsDifferentiate the two types of instruction.arrow_forward
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