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 4RQ
Program Plan Intro
a.
Jump instruction:
In PLC
Jump to Label instruction:
The jump to label instruction either jumps forward or backward to the corresponding label instruction.
Explanation of Solution
b.
Affecting jumped rungs:
- At the time of executing a jump-to-label instruction, the jumped rungs are not scanned by the processor...
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Chapter 9 Solutions
Activities Manual for Programmable Logic Controllers
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Similar questions
- (True/False): A JMP instruction can only jump to a label inside the current procedure.arrow_forwardWhat happens to the Carry flag when the SHR AX,1 instruction is executed?arrow_forwardTrue/False): In 32-bit mode, the LOOPNZ instruction jumps to a label when ECX isgreater than zero and the Zero flag is clear.arrow_forward
- (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.arrow_forwardComputer Engineering Subject name DLD . Code PS15 Task 3.1 Implementation of Combination Logic Circuit using PLA Like ROM, PLA can be mask-programmable or field-programmable. With a mask-programmable PLA, the user must submit a PLA program table to the manufacturer. This table is used by the vendor to produce a user-made PLA that has the required internal paths between inputs and outputs. A second type of PLA available is called a field-programmable logic array or FPLA. The FPLA can be programmed by the user by means of certain recommended procedures. FPLAs can be programmed with commercially available programmer units. ,As mentioned earlier, user has to submit PLA program table to the manufacturers to get the user-made PLA. Let the students to try how to determine PLA program table with the help of a question.Draw a PLA circuit to implement the logic functions A'BC + AB'C + AC' and A'B'C' + BC.arrow_forwardComplete the following statement: With the CMP instruction no operands are modified the source operand is changed O the destination operand is changedarrow_forward
- The CMP instruction is used to compare 2 operands. You can use a jump instruction afterwards. True or Falsearrow_forwardComputer Science - Assembly language code: Q1. A) A microprocessor is wired into a sensing control circuit so that the memory locations 42 and 43 each contain the values 0 or 1. Memory location 50 is connected to a light switch. When the value in 50 is 1 the light is on and when it is 0 the light is off. Write a program to switch on the light on when the values in locations 42 and 43 are both 1, and to switch off the light when the values in locations 42 and 43 are both 0. Only use the ARM assembly language instructions, MOV, JMP and JNZ. Assume that the MOV instruction updates the flags with the status register.arrow_forwardWrite the instruction to add the carry flag to AH register. You must write only one instruction. Write everything as uppercase. No other explanations!! ADC AH, AHarrow_forward
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