Programmable Logic Controllers
5th Edition
ISBN: 9780073373843
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
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Chapter 8, Problem 12RQ
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
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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- Using the 74LS00 NAND gate chip, construct the circuit in the schematic and complete the accompanying truth table. Barrow_forwardTruth table/State of Modulo-5 Counter (Counts 0,1,2,3,4)arrow_forwardFor the ripple counter in Figure, show the complete timing diagram for sixteen clock pulses. Show the clock, Q0, Q1, and Q2 waveforms.arrow_forward
- Three cascaded modulus-10 counters have an overall modulus of(a) 30 (b) 100(c) 1000 (d) 10,000arrow_forwardWrite the difference between TTL and CMOS logic families according to the following table: SPECIFICATION TTL CMOS Components AND Basic Gate Noise Immunity Fan-out tp in ns Noise Margin Power/gate in mWatt Figure of Meritarrow_forward1. Create the truth table for the SR NAND Latch shown below.2. Draw a diagram of a Gated SR NAND Latch.arrow_forward
- 1. Design a simple logic circuit for a Set/Reset (SR) Latch, based on any actual application of latches. 2.) Describe your design using at least three (4) sentences. Note: Look at the example guide on the image.arrow_forwardState the operation of a frequency counter.arrow_forwardWrite in detail following terminologies according to wafer fabrication processes: a. Diffusion and Ion Implantation b. Metallizationc. Etchingarrow_forward
- Give one example each for a Diode made of Silicon Semiconductor (SC) material & a Diode made of Germanium SCarrow_forwardDesign the circuit of standard symbol of CMOS NOR gate circuit, and explain the operation of it.arrow_forwardExplain the following terms as applied in combinational logic circuit: Encoder, decoder, multiplexer, and demultiplexerarrow_forward
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