EBK ACTIVITIES MANUAL FOR PROGRAMMABLE
EBK ACTIVITIES MANUAL FOR PROGRAMMABLE
5th Edition
ISBN: 8220102795983
Author: Petruzella
Publisher: YUZU
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Chapter 11, Problem 7RQ
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 program based on the type of processor used.
  • The data manipulation instructions are almost similar to math instructions.
  • The math instruction allows the PLC to take more of conventional computer qualities.
  • 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.

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