Programmable Logic Controllers
5th Edition
ISBN: 9780073373843
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
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Question
Chapter 11, Problem 4P
Program Plan Intro
Math instruction:
- Math instructions refer to all output instructions that uses the data of two words or registers and perform the desired function.
- Math instructions are programmed based on the type of processor used.
- The data manipulation instructions are almost similar to math instructions.
- Math instructions are normally used to perform arithmetic functions on the values stored in memory words or registers.
Math functions:
The basic math functions performed by PLCs are as follows:
- Addition
- This function is used to add one piece of data to another.
- It is also called as ADD.
- Subtraction
- This function is used to subtract one piece of data from another.
- It is also called as SUB.
- Multiplication
- This function is used to multiply one piece of data by another.
- It is also called as MUL.
- Division
- This function is used to divide one piece of data from another.
- It is also called as DIV.
Terms used:
The following terms are used in the instruction.
- Source A
- Source A refers to the address of the first piece of data that is used in the instruction.
- Source B:
- Source B refers to the address of the second piece of data that is used in the instruction.
- Destination
- Destination refers to the address where the results of the instruction are stored.
Explanation of Solution
b.
Value stored in “N7:0”:
- Consider the given word “N7:0”.
- In the given program, the word “N7:0” addresses the destination of the “MUL” instruction.
- Here, “Source A” and “Source B” of “MUL...
Explanation of Solution
c.
Value stored in “N7:1”:
- Consider the given word “N7:1”.
- In the given program, the word “N7:1” addresses the destination of the “DIV” instruction.
- Here, “Source A” and “Source B” of “DIV...
Explanation of Solution
d.
Value stored in “O:013”:
- Consider the given word “O:013”.
- In the given program, the word “O:013” addresses the destination of the “ADD” instruction.
- Here, “Source A” and “Source B” of “AD...
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Chapter 11 Solutions
Programmable Logic Controllers
Ch. 11 - Explain the function of math instructions as...Ch. 11 - Prob. 2RQCh. 11 - What standard format is used for PLC math...Ch. 11 - Prob. 4RQCh. 11 - Prob. 5RQCh. 11 - Prob. 6RQCh. 11 - Prob. 7RQCh. 11 - Prob. 8RQCh. 11 - Prob. 9RQCh. 11 - Prob. 10RQ
Ch. 11 - With reference to the instruction of Figure 11-34,...Ch. 11 - With reference to the instruction of Figure 11-35,...Ch. 11 - Prob. 1PCh. 11 - Prob. 4PCh. 11 - Prob. 5PCh. 11 - Prob. 7PCh. 11 - Prob. 8PCh. 11 - With reference to math instruction program shown...Ch. 11 - With reference to the math instruction program...Ch. 11 - Prob. 11PCh. 11 - Prob. 12P
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