PROGRAMMABLE LOGIC CONTROLLERS BUNDLE
5th Edition
ISBN: 9781260582475
Author: Petruzella
Publisher: MCG
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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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Analyze the flow chart below. QUESTIONS: 6. Determine - calculate the delay generated by [DE] and the value of "F" after the instruction [A]<-[A]v[E] is executed the first and the 10th time. 7. Determine - discuss the contents of the displays. 8. Estimate - Calculate the shortest execution time of the program in terms of instructions, cycles, and seconds. 9. Repeat Part 8 for the longest execution time. 10. Are the two PUSHH instructions required? Discuss.[}][|
Let's pretend you've been entrusted with showing the interplay between the computer's Memory Module, I/O Module, and Processor Module. Do you think proper emphasis on this message is necessary?
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 error
Chapter 9 Solutions
PROGRAMMABLE LOGIC CONTROLLERS BUNDLE
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Similar questions
- Question 18Calculating the address of the next instruction to execute is performed during the _ step of the instruction cycle. None Writeback result Instruction Execute Instruction Fetch Instruction Decodearrow_forward174. Load instruction that are requested moves a. from memory b. to memory c. in memory d. on memoryarrow_forwardJustify the following statements: i) The size of program counter is of 13 bits. ii) Direct address is of size 7 bits while indirect address is of 8 bits. iii) CALL and GOTO instructions, the size of program memory page is of 2K.arrow_forward
- Please answer the question below alongside the following; Describe what you expect the instruction to do.arrow_forwardWhy are input/output instructions generally considered privileged instruction?arrow_forwardThe following statements describe the basic CPU organization. Select all TRUE statements. Question 4 options: a The program counter (PC) holds the address of the next instruction to be fetched from Memory. b Buses serve as communication highways for passing information. c The instruction register holds each instruction fetched from memory. d The arithmetic logic unit (ALU) carries out arithmetic and logical operations, such as addition, comparison, Boolean AND/OR/NOT, etc.arrow_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_forwardImagine that you have been given the responsibility of illustrating the manner in which the Memory Module, the I/O Module, and the CPU Module are all coupled with one another as well as the rest of the computer. Do you think it is necessary for you to emphasise the relevance of this message in the appropriate manner?arrow_forwardWhich portion of the CPU is responsible for processing data/instructions and producing a result?arrow_forward
- Please answer the question below alongside the following; What are the contents of Register 1 and Register 4 after this instruction is executed?arrow_forwardQUESTION 43 Using the Vole machine language reference in Appendix C in the book, what is the instruction that performs the following: JUMP to the instruction at address 88 if the contents of register 2 equals that of register 0.arrow_forwardAssume all of Pep/9's main memory is filled up with unary instructions. How many steps are there in each one? B) If there are no unary instructions, how many instructions can fit in the main memory? An equal number of unary and nonunary instructions are stored in the main memory. What is the total number of instructions?arrow_forward
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