Activities Manual for Programmable Logic Controllers
5th Edition
ISBN: 9781259679568
Author: Petruzella, Frank
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Question
Chapter 10, Problem 5RQ
Program Plan Intro
Data manipulation instructions:
- Data manipulation instructions enable the numerical data that exists in the controller’s memory to be performed within the control program.
- Data manipulation instructions allows manipulation of data that is stored in either single or multiple words groups.
- It also includes the transfer of data from one data memory area of the Programmable Logic Controller (PLC) to another.
- In order to accomplish data manipulation, there are mainly two different kinds of instructions.
- Instructions which operate on word data.
- Instructions which operate on file or block.
- There are mainly two broad categories of data manipulation instructions as follows:
- Data transfer instructions
- Data comparison instructions
MOV instruction:
- Move (MOV) instruction is used to copy the data of the source register into destination register.
- Here, the contents of the source register will not be altered.
- In other words, it is used to copy the value in one word or register to another word or register.
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Instruction CLD belongs to Implied addressing and it sets the Carry Flag to one.
Select one:
True
False
4. Which segment will be accessed for the instruction MOV [BX],AH.
(d) The table below shows the ALUcontrol signal of the datapath we discussed in class.
Instruction
Funct
ALU
Орсode
ALUop
ALU action
operation
field
control
Iw
00
load word
XXXXXX
add
0010
Sw
00
store word
XXXXXX
add
0010
beq
01
branch equal
subtract
0110
XXXXXX
R-type
10
add
100000
add
0010
R-type
10
subtract
100010
subtract
0110
R-type
10
AND
100100
AND
0000
R-type
10
OR
100101
OR
0001
R-type
10
set on less than
101010
set on less than
0111
You want to add the bne instruction into the datapath, which already includes the
required hardware for the instruction. Write out the ALUop for bne and how you can
determine whether the bne results in the branch to be taken.
Chapter 10 Solutions
Activities Manual for Programmable Logic Controllers
Ch. 10 - In general, what do data manipulation instructions...Ch. 10 - Prob. 2RQCh. 10 - Prob. 3RQCh. 10 - Prob. 4RQCh. 10 - Prob. 5RQCh. 10 - Prob. 6RQCh. 10 - Prob. 7RQCh. 10 - Prob. 8RQCh. 10 - Prob. 9RQCh. 10 - Prob. 10RQ
Ch. 10 - Prob. 11RQCh. 10 - Prob. 12RQCh. 10 - Prob. 13RQCh. 10 - Prob. 14RQCh. 10 - Prob. 15RQCh. 10 - Prob. 16RQCh. 10 - Prob. 17RQCh. 10 - Prob. 18RQCh. 10 - Prob. 19RQCh. 10 - Prob. 20RQCh. 10 - Prob. 21RQCh. 10 - Prob. 22RQCh. 10 - Prob. 1PCh. 10 - Prob. 2PCh. 10 - Prob. 3PCh. 10 - Prob. 4PCh. 10 - Prob. 7PCh. 10 - Prob. 8PCh. 10 - Prob. 9PCh. 10 - Prob. 10PCh. 10 - Write a program that will cause a light to come on...Ch. 10 - Write a program that will cause a light to come on...
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Similar questions
- A(n) ____________________ instruction copies data from one memory location to another.arrow_forwardThe time it takes to perform the fetch instruction and decode instruction steps is called the execution time. True or false?arrow_forwardA(n) ________________ instruction always alters the instruction execution sequence. A(n) ______________ instruction alters the instruction execution sequence only if a specified Condition is true.arrow_forward
- When an instruction is first fetched from memory, its placed in the _________________ and then ________________to extract its components.arrow_forwardWhat happens to the Carry flag when the SHR AX,1 instruction is executed?arrow_forwardWhich register is utilized as a counter by the LOOP instruction when it is executed in real-address mode?arrow_forward
- In the Allen-Bradley MOV instruction, constants such as 250, 400, 5.5, etc., can be entered into the source location of the MOV instruction rather than a memory address containing the value to be moved. True Falsearrow_forwardThe program counter (PC) contains the address of the next instruction -pair to be fetched from memory? a. True O b. falsearrow_forwardGiven the statement, R = J + O + K- E, write the instruction using I address instruction format.arrow_forward
- Complete the following statement: With the CMP instruction no operands are modified the source operand is changed O the destination operand is changedarrow_forwardAssume AL=35h; CL=05. Write the content of AL after RCR AL, CL - showing the calculation steps. Assume a CLC instruction before this RCR instruction.arrow_forwardIn a SRL instruction, if we perform shift on a number by two positions, the number is divided by 4. Select one: True Falsearrow_forward
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