Programmable Logic Controllers
5th Edition
ISBN: 9780073373843
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
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Question
Chapter 6, Problem 3P
Program Plan Intro
Ladder logic program:
The above ladder logic program includes three inputs namely, I/1, I/2 and I/3, three rungs namely, Rung 1, Rung 2 and Rung 3, two pilot lights namely, PL1 and PL2 and two outputs namely, O/9 and O/10.
Explanation of Solution
b.
Condition for unlatch rung 2:
- When the input I/3 is set as true or ON state, the unlatch rung 2 is termed as active or in true state...
Explanation of Solution
c.
Condition for rung 3:
- When the input O/9 in Rung 3 is set as zero or low, the rung 3 is termed as active.
- When the input I/3 in Rung 2 is set as true, the output of Rung 2 will be reset as zero...
Explanation of Solution
d.
State of Pilot Light PL1:
- The ON state of pilot light PL1 represents that the output bit O/9 is in high state.
- This can be occurred when the relay in latched state is set to the bit 1...
Explanation of Solution
e.
State of Pilot Light PL2:
- The ON state of pilot light PL2 represents that the input bit I/3 is true in Rung 2...
Explanation of Solution
f.
Pilot Light used when the power is restored:
AC power is removed and restored through the circuit, the relay retains to its original state, n...
Explanation of Solution
g.
Inputs required for unlatched state:
- The relay is in latched state and the inputs I/1, I/2 and I/3 are false.
- To convert the relay state from latched to unlatched,...
Explanation of Solution
h.
State of the relay:
- The Programmable Logic Controller (PLC) executes the instructions according to top to bottom approach.
- When the closed instructions at I/1, I/2 and I/3 are termed...
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Given the following Boolean equation:
F = A XOR B XOR C XOR D
that represents a digital logic circuit where the output is F and the inputs A, B, C, and D, write the truth table for the Boolean equation.
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Q: 4 inputs ( S1 , S2 , R1 , R2 , EN. If the latch S R circuit work on Set or rest?
Chapter 6 Solutions
Programmable Logic Controllers
Ch. 6 - Prob. 1RQCh. 6 - Prob. 2RQCh. 6 - Prob. 3RQCh. 6 - Prob. 4RQCh. 6 - Prob. 5RQCh. 6 - Prob. 6RQCh. 6 - Prob. 7RQCh. 6 - Prob. 8RQCh. 6 - What do the abbreviations NO and NC represent when...Ch. 6 - Prob. 10RQ
Ch. 6 - Prob. 11RQCh. 6 - Prob. 12RQCh. 6 - Compare the operation of a photovoltaic solar cell...Ch. 6 - What are the two basic components of a...Ch. 6 - Prob. 15RQCh. 6 - Give an explanation of how a scanner and a decoder...Ch. 6 - Prob. 17RQCh. 6 - Prob. 18RQCh. 6 - Prob. 19RQCh. 6 - Prob. 20RQCh. 6 - Prob. 21RQCh. 6 - Prob. 22RQCh. 6 - Prob. 23RQCh. 6 - Prob. 24RQCh. 6 - Prob. 25RQCh. 6 - Prob. 26RQCh. 6 - Prob. 27RQCh. 6 - Prob. 28RQCh. 6 - Prob. 29RQCh. 6 - Prob. 30RQCh. 6 - Prob. 31RQCh. 6 - Prob. 32RQCh. 6 - Prob. 33RQCh. 6 - Prob. 1PCh. 6 - Prob. 2PCh. 6 - Prob. 3PCh. 6 - Prob. 4PCh. 6 - Design a PLC program and prepare a typical I/O...Ch. 6 - Prob. 6PCh. 6 - Prob. 7PCh. 6 - Prob. 8P
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- a. Complete this truth table for the SR latch. Use Qp and Q'p for the previous state. b. Draw the circuit diagram for the SR latch: c. Assume the inputs are S=0 and R=0. Will the output Q be 0 or 1? Explain.arrow_forwardWhat logical state is at the output of three standard (push-pull) gates connected together if one of them gives 0 at its output and two of them give 1?arrow_forwardHi! I am new to logic circuits, and I am curious about this diagram. I Know that the operators are NAND operators. But I wonder what are bitwise sum and bitwise product (carry bit) at the last two outputs of the circuit. How do we compute them? For example if x1=0 and x2=1 what the output is going to be?arrow_forward
- Identify the following logic gate by name, and write the truth table with Boolean expression. Just answer without explanation pleasearrow_forwardDraw the non-abbreviated logic diagram for the following Boolean expressions. (You may use XOR gates.) A) ((a’)’)’C) a’b + ab’F) ((ab XOR b’) + a’b)’K) (abc’) + (a’ b’ c’)’N) (((a + b)’ + c)’ + d)’arrow_forwardSR latch is one of the simplest sequential circuits, which is composed of two cross-coupled NOR gates, as shown below. Select all TRUE statements. a If R = 1 and S = 1, Both NOR gates produce the FALSE outputs. That is an invalid state. b If R = 0 and S = 0, this circuit will remember the previous value (or state) Q and Q_complement. c If R = 0 and S = 1, it produces a TRUE output on Q. d If R = 1 and S = 0, it produces a FALSE output on Q.arrow_forward
- The logic circuit below is supposed to be designed to produce the truth table also shown below. However, there is a component missing. Which type of component is missing?arrow_forwardUsing the state equations and/or state table in the picture. Present a circuit. Use D Flip Flop along with any logic gate or combinatorial circuit seen in class. Clearly label all inputs and outputs.arrow_forwardDevelop the ladder logic diagram to fill the tank. 1. Filling the water tank up to 80%. When the tank is filled, turn ON the heater to raise the temperature up to 70-degree C.2. when this temperature is reached, turn OFF the heater & open the outlet valve.3. When the level in the tank falls below 10%, closes the output valve and start filling the tank again.4. A digital counter is used to monitor the number of times the tank is emptied (reaches 10%). Once the counter reaches to 8 times, the system is stopped.arrow_forward
- Draw a ladder logic diagram for the timer scenario shown.arrow_forwardA set of stairwell lights is controlled by the single output, L of a Logic circuit having inputs from three Switches S₂, S₁, S. Assume that initially all switches are down and lights are off. The first person to change any one of the three switches to up turn the Light ON, the next person to subsequently after the position of any one of the three switches turns the light off, The next person turns the rights ON. Determine the required Logic and implement using :(a)NAND gates (b)EX-OR gates.arrow_forwardwe have been using different IC’s while performing lab exercises. we have also used these IC’s in course project. Like, AND, OR, XOR, Latches, Flip-Flops, Decoder, MUX, DMUX etc. Are these related to Fixed Function Logic or we can also Program these IC’s? Justify your answer with proper reasoning.arrow_forward
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