Package: Loose Leaf For Programmable Logic Controllers With 1 Semester Connect Access Card
5th Edition
ISBN: 9781259949142
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
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Question
Chapter 8, Problem 8RQ
Program Plan Intro
One-Shot Rising (OSR) instruction:
- An OSR instruction refers to an input instruction which triggers an event to occur one time.
- This instruction is placed before the output instruction in the ladder logic.
- The OSR instruction is used to automatically reset a counter.
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Chapter 8 Solutions
Package: Loose Leaf For Programmable Logic Controllers With 1 Semester Connect Access Card
Ch. 8 - Name the three forms of PLC counter instructions,...Ch. 8 - State four pieces of information usually...Ch. 8 - In a PLC counter instruction, what rule applies to...Ch. 8 - Prob. 4RQCh. 8 - When does the PLC counter instruction increment or...Ch. 8 - Prob. 6RQCh. 8 - Prob. 7RQCh. 8 - Prob. 8RQCh. 8 - Prob. 9RQCh. 8 - Prob. 10RQ
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- The time it takes to perform the fetch instruction and decode instruction steps is called the execution time. True or false?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_forwardIn 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_forward
- Describe the behavior of a test_and_set instruction. Show how to use it to build a spin lock.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_forwardASSEMBLY The ROR instruction is only suitable for signed integers. True Falsearrow_forward
- Instruction CLD belongs to Implied addressing and it sets the Carry Flag to one. Select one: True Falsearrow_forwardIn a CMP instruction, the source and destination are not changed. Select one: True Falsearrow_forwardASSEMBLY With unsigned operands, the CMP instruction sets the Carry flag when the destination operand is less than the source operand. True Falsearrow_forward
- The interrupt vector table is made up of many entries, each of which has its own independent data structure.arrow_forwardThe basic computable functions of the URM includes (i) x + 1 (ii) 0(0(x))=0, Vx (iii) U = (x1,x2,..,x, ) = x, Describe briefly, the meaning of each computable function.arrow_forwardHow is the FISUB instruction different from FSUB?arrow_forward
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