LogixPro PLC Lab Manual for Programmable Logic Controllers
5th Edition
ISBN: 9781259680847
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
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Question
Chapter 3, Problem 1P
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.
Hexadecimal number system:
- In hexadecimal number system, the numbers from “0” to “9” and letters from “A” to “F” are used.
- It means, in total, hexadecimal system has 10 numbers and 6 alphabets.
- Therefore, the base used for hexadecimal numbering system is 16.
Binary number system:
- In binary system, the numbers “0” and “1” are only used.
- It means, in total, binary system has only 2 numbers.
- Therefore, the base used for binary numbering system is 2.
Explanation of Solution
b.
Conversion of binary number to its equivalent hexadecimal code:
- Given, binary number is “00100101”.
- First, the given binary number is partitioned into two groups, such that each group contains only four bits.
- Now, each group is converted to its corresponding hexadecimal code.
- Here, “0010” is one such group and “0101” is the other group.
- The following diagram describes the hexadecimal notation of the binary number “0010”.
- The hexadecimal equivalent of decimal number “2” is “2”...
Explanation of Solution
c.
Conversion of binary number to its equivalent hexadecimal code:
- Given, binary number is “01001110”.
- First, the given binary number is partitioned into two groups, such that each group contains only four bits.
- Now, each group is converted to its corresponding hexadecimal code.
- Here, “0100” is one such group and “1110” is the other group.
- The following diagram describes the hexadecimal notation of the binary number “0100”.
- The hexadecimal equivalent of decimal number “4” is “4”...
Explanation of Solution
d.
Conversion of binary number to its equivalent hexadecimal code:
- Given, binary number is “00111001”.
- First, the given binary number is partitioned into two groups, such that each group contains only four bits.
- Now, each group is converted to its corresponding hexadecimal code.
- Here, “0011” is one such group and “1001” is the other group.
- The following diagram describes the hexadecimal notation of the binary number “0011”.
- The hexadecimal equivalent of decimal number “3” is “3”...
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Programming Problems
9.28
Assume that a system has a 32-bit virtual address with a 4-KB page size.
Write a C program that is passed a virtual address (in decimal) on the
command line and have it output the page number and offset for the
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./addresses 19986
Your program would output:
The address 19986 contains:
page number = 4
offset = 3602
Writing this program will require using the appropriate data type to
store 32 bits. We encourage you to use unsigned data types as well.
Programming Projects
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Chapter 3 Solutions
LogixPro PLC Lab Manual for Programmable Logic Controllers
Ch. 3 - Prob. 1RQCh. 3 - Convert each of the following decimal numbers to...Ch. 3 - Prob. 3RQCh. 3 - Prob. 4RQCh. 3 - Prob. 5RQCh. 3 - Prob. 6RQCh. 3 - Prob. 7RQCh. 3 - Prob. 8RQCh. 3 - Prob. 9RQCh. 3 - Prob. 10RQ
Ch. 3 - Prob. 11RQCh. 3 - Define the term sign bit.Ch. 3 - Prob. 13RQCh. 3 - Prob. 14RQCh. 3 - Prob. 15RQCh. 3 - Prob. 16RQCh. 3 - Prob. 17RQCh. 3 - Prob. 18RQCh. 3 - Prob. 19RQCh. 3 - Prob. 1PCh. 3 - Prob. 2PCh. 3 - Prob. 3PCh. 3 - Prob. 4PCh. 3 - Prob. 5PCh. 3 - Prob. 6PCh. 3 - Prob. 7PCh. 3 - Prob. 8PCh. 3 - Prob. 9PCh. 3 - Prob. 10P
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