Programmable Logic Controllers - With Access
5th Edition
ISBN: 9781259933523
Author: Petruzella
Publisher: MCG
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Question
Chapter 11, Problem 10RQ
Program Plan Intro
Math instruction:
- Math instructions refer to all output instructions that uses the data of two words or registers and perform the desired function.
- Math instructions are program based on the type of processor used.
- The data manipulation instructions are almost similar to math instructions.
- The math instruction allows the Programmable Logic Controller (PLC) to take more of conventional computer qualities.
- Math instructions are normally used to perform arithmetic functions on the values stored in memory words or registers.
Clear instruction:
- The clear instruction is used to set or reset all the bits of the word in the destination to zero.
- It is denoted as CLR.
Destination:
- Destination refers to the address where the results of the instruction are stored.
- For example, if 1+1=2; then the value 2 is automatically stored in the destination address location.
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Chapter 11 Solutions
Programmable Logic Controllers - With Access
Ch. 11 - Explain the function of math instructions as...Ch. 11 - Prob. 2RQCh. 11 - What standard format is used for PLC math...Ch. 11 - Prob. 4RQCh. 11 - Prob. 5RQCh. 11 - Prob. 6RQCh. 11 - Prob. 7RQCh. 11 - Prob. 8RQCh. 11 - Prob. 9RQCh. 11 - Prob. 10RQ
Ch. 11 - With reference to the instruction of Figure 11-34,...Ch. 11 - With reference to the instruction of Figure 11-35,...Ch. 11 - Prob. 1PCh. 11 - Prob. 4PCh. 11 - Prob. 5PCh. 11 - Prob. 7PCh. 11 - Prob. 8PCh. 11 - With reference to math instruction program shown...Ch. 11 - With reference to the math instruction program...Ch. 11 - Prob. 11PCh. 11 - Prob. 12P
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- What would cause the current instruction to be reset if there was a problem?arrow_forward(Yes/No): Is it possible for the NEG instruction to set the Overflow flag?arrow_forwardThis R format instruction adds the four bytes that the source register holds and puts the sum into the lower two bytes of the destination register.arrow_forward
- Given the above image, explain where each of these stated operands is stored or located and how we would reference them in an instruction.arrow_forwardKnowing that CL register has data 'F', what will the following instruction exactly do?arrow_forwardWhen compared to the OFFSET operator, what advantages does the LEA instruction have?arrow_forward
- What makes the LEA instruction superior than the OFFSET operator?arrow_forwardWhat logic values will the following signals have during an instruction fetch?arrow_forwardUse five hex digits to show each of the micro-instructions in a new micro-program that implements the nop instruction.arrow_forward
- Do you know what would happen if an instruction was rejected? TLBs controlled by software are quicker than those controlled by hardware in the following situations:arrow_forwardThe "popl" instruction will set the processors condition codes (i.e., ZF, CF, SF, and OF). Question 3 options: True Falsearrow_forwardالسؤال the instruction used to simply increases the value of variable X by 1 الاجابات X++ X+ X-- X-arrow_forward
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