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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Students have asked these similar questions
a) Light in a two-story building is controlled by two switches. The top switch is
labeled Sj and bottom one is labeled S2. When a switch is “ON" the value is “1"
and when a switch is “OFF" the value is “0" The light goes "OFF" when both
switches are "ON" or both are "OFF". Draw the Truth Table of the lighting
system.
Write down the logic equation of the system in a SOP form
Implement the circuit of the lighting system using the SOP logic equation in
(b) using AND-OR gates
In a chemical factory, a chemical is stored in three different tanks. A level
sensor in each tank produces a positive input voltage (+24V) when the level of
chemical in the tank drops below a specified point. Ladder logic will monitor
the chemical level in each tank and indicate an alarm condition when the level
in any two of the tanks drops below a specified point.
Develop a Truth Table, the resulting Boolean Expression and ladder logic in
its simplest form. Explain your method of Boolean simplification.
Inputs Required:
Tank 1 sensor
Tank 2 sensor
(X0)
(X1)
(X2)
Tank 3 sensor
Outputs Required:
(YO)
Alarm
This is the question:
Suppose that we want to synthesize a circuit that has two switches x and y. The required functional behavior of the circuit is that the output must be equal to 0 if switch x is opened (x=0 ) and y is closed (y=1); otherwise the output must be 1.
My friend sent me the answer which I will attach but I have no idea what is going on .. can someone please explain in detail?
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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- 5. Consider the circuit below: A- B- C- a. Write the Boolean expression modeled by the circuit. Above. Use Boolean Algebra notation: A, (for not A); AB (for A and B), A + B (for A or B), A Ð B (A xor B), etc. b. Evaluate the output of each gate, including the final gate, given that A= 1, B=1 and C=1 Write your evaluation of each gate above each gate and include a screen shotarrow_forwardAO- For the above given logic circuit, the output Y value is =1 when the inputs of A, B, and C are a. None of these O b. A=1, B=1, C=1 O c. A=1, B=1, C=0 O d. A=1, B=0, C=1arrow_forwardC1. Consider the designing of a synchronous circuit to detect the sequence 0110. The circuit has a single input x, and a single output z. The output is logic-l whenever the input sequence 0110 is detected, logic-0 otherwise. Note that overlapping sequences are allowed. Answer the following questions: a. Complete the following state diagram of the circuit: 1 so s1 S2 S3 S4 b. Draw and fill the state table of the circuit. c. Write the equations of the state variables and the output Z.arrow_forward
- Question 2: A combinational circuit has 4 inputs (A, B, C, D) and 1 output (F). ABCD represent a majority function. The output of the majority function is equal to 1 if the input variables have more 1's than O's, otherwise the output is 0. a. Construct the truth table of the required circuit. b. Implement the minimized expression of F using 3-level all NAND gate circuit. Implement a 2-1Multiplexer using three-state buffers.arrow_forwardCreate a non-abbreviated logic diagram for the following Boolean Expressions. You can use all gates. (a XOR b + b’ XOR c’)arrow_forward2. Consider the circuit below. a. Write the Boolean expression for output F in terms of A, B and C. b. Construct a truth table for the circuit with A as MSB and C as LSB. c. Write the Canonical SOP and POS forms for output F. A B C 3. Draw the logic circuit represented by the expression F(A, B) = AB using no more than 5 units of 2-input NAND gate and write the corresponding Boolean expression.arrow_forward
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