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Activities Manual for Programmable Logic Controllers
5th Edition
ISBN: 9781259679568
Author: Petruzella, Frank
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Question
Chapter 9, Problem 7RQ
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 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.
Explanation of Solution
b.
Benefits of programming:
- It is beneficial to program an immediate input or immediate output instruction near the beginning of a program.
- It is because the I/O data files will have the latest status of input and output at the beginning of the program...
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Students have asked these similar questions
What are the first two actions that must be taken in order to carry out an instruction?
1a. determine its function
1b. If the instruction JZ is replaced by JNZ, modify the program so that you can obtain the same result.
What four steps are taken by the CPU when an INT instruction is invoked by a program?
Chapter 9 Solutions
Activities Manual for Programmable Logic Controllers
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Similar questions
- When the INT instruction executes, what is the first task carried out by the CPU?arrow_forwardWhat are the first two actions while carrying out an instruction?arrow_forwardCan you describe the CPU's function and the operations it performs? What are your feelings and responses to this circumstance?arrow_forward
- i. Briefly explain how the addition of 2 binary numbers takes place with the help of a flow chart using an Intel microprocessor.ii.Write a pseudocode for the above flow chart and a code in any of the simplest assembly language.iii. Perform i. and ii. above for subtraction operation.arrow_forward18.The instruction that is used for finding out the codes in case of code conversion problems isa) XCHGb) XLATc) XORd) JCXZarrow_forwardIn case of a mistake, the current instruction will be cleared.arrow_forward
- 74. When programmer makes a mistake in sequence of given instruction, error occurs in a program which is a. system error b. logical error c. described error d. unidentified errorarrow_forwardWhat are the steps followed to execute an instruction? Briefly explain them.arrow_forwarda. Response time b. Throughput c. Execution Time 2. The register that hold the address of the current instruction being executed is called a. Saved register b. Global pointer c. Stack pointer used to identify the d. Clock Rate d. Program counterarrow_forward
- 13)The Control Unit determines the _. a. particular instruction to be executed by interpreting the source code b. particular instruction to be executed by reading the IN BOX or I/O interface c. particular instruction to be executed by reading the contents of the program counter d. outcome of an instruction by interpreting the ALU outputarrow_forward27. Interrupts initiated by an instruction is called as a. Internal b. External c. Hardware d. Softwarearrow_forward17)The first seven instructions fall into the four categories: a. machine control, program execution and data flow b. simple arithmetic, Input / Output and machine controlc. machine control, Input / Output and data flow d. simple arithmetic, Input / Output and data flowarrow_forward
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