Programmable Logic Controllers
Programmable Logic Controllers
5th Edition
ISBN: 9780073373843
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
Question
Book Icon
Chapter 10, Problem 4P
Program Plan Intro

EQU instruction:

  • The Equal (EQU) instruction is used to test whether the given two values are equal or not.
  • If the given two values such as Source A and Source B are equal then, the instruction is logically true. Otherwise, the given instruction is logically false.

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.

Given:

The instructions used in the given data compare program are the input instructions, which are used to compare two different numerical data values and it compares the words stored in the data to take decisions.

Explanation of Solution

b.

Status of switch S1:

No, it is not required that the switch S1 must be closed to change the numeric value stored in “S...

Explanation of Solution

c.

Numbers to be set on the thumbwheel:

The thumbwheel switch is required to be set on with the Binary Coded Decimal (BCD) value “004” in order to turn on the pilot light.

Explanation:

The given ladder logic diagram has been modified as shown below:

Blurred answer
Students have asked these similar questions
Using R language
Using R language
Using R language
Knowledge Booster
Background pattern image
Recommended textbooks for you
Text book image
COMPREHENSIVE MICROSOFT OFFICE 365 EXCE
Computer Science
ISBN:9780357392676
Author:FREUND, Steven
Publisher:CENGAGE L
Text book image
Systems Architecture
Computer Science
ISBN:9781305080195
Author:Stephen D. Burd
Publisher:Cengage Learning
Text book image
EBK JAVA PROGRAMMING
Computer Science
ISBN:9781337671385
Author:FARRELL
Publisher:CENGAGE LEARNING - CONSIGNMENT
Text book image
C++ for Engineers and Scientists
Computer Science
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Course Technology Ptr
Text book image
A+ Guide to Hardware (Standalone Book) (MindTap C...
Computer Science
ISBN:9781305266452
Author:Jean Andrews
Publisher:Cengage Learning
Text book image
Programming Logic & Design Comprehensive
Computer Science
ISBN:9781337669405
Author:FARRELL
Publisher:Cengage