Programmable Logic Controllers - With Access
5th Edition
ISBN: 9781259933523
Author: Petruzella
Publisher: MCG
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Textbook Question
Chapter 7, Problem 5P
Study the ladder logic
- a. What type of timer has been programmed?
- b. What is the length of the time-delay period?
- c. When does the timer start timing?
- d. When is the timer reset?
- e. When will rung 3 be true?
- f. When will rung 5 be true?
- g. When will output PL4 be energized?
- h. Assume that your accumulated time value is up to 020 and power to your system is lost. What will your accumulated time value be when power is restored?
- i. What happens if inputs PB1 and PB2 are both true at the same time?
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Describe how the clocking procedure works.
Why did the program fail to capture the output of the circuit? Think about the timing and make the necessary correction. Compile, and re-run. The correct output should be0because: 1 and (not 1) = 1 and 0 = 0.
using the verilog
Given the input timing diagram of the inputs R and S, determine the output Q for an active-low input SR latch and answer the questions below. Write the letter that best represent your answer. Assume Q is zero before time A.
1. What is the status of the flip-flop at A?
a. no change b. set c. reset d. undefined
2. What is the value of Q at A?
a. zero b. one
3. What is the status of the flip-flop at B?
a. no change b. set c. reset d. undefined
4. What is the value of Q at B?
a. zero b. one
5. What is the status of the flip-flop at C?
a. no change b. set c. reset d. undefined
6. What is the value of Q at C?
a. zero b. one
7. What is the status of the flip-flop at D?
a. no change b. set c. reset d. undefined
8. What is the value of Q at D?
a. zero b. one
9. What is the status of the…
Chapter 7 Solutions
Programmable Logic Controllers - With Access
Ch. 7 - Prob. 1RQCh. 7 - Prob. 2RQCh. 7 - Prob. 3RQCh. 7 - Prob. 4RQCh. 7 - a. What are the two methods commonly used to...Ch. 7 - Prob. 6RQCh. 7 - Prob. 7RQCh. 7 - Prob. 8RQCh. 7 - For a TOF timer: a. When is the enable bit of a...Ch. 7 - Explain what each of the following quantities...
Ch. 7 - State the method used to reset the accumulated...Ch. 7 - Study the ladder logic program in Figure 7-40 and...Ch. 7 - Study the ladder logic program in Figure 7-42, and...Ch. 7 - Prob. 6PCh. 7 - Prob. 7PCh. 7 - Prob. 8PCh. 7 - Prob. 9PCh. 7 - Prob. 10PCh. 7 - Prob. 11PCh. 7 - Prob. 13PCh. 7 - When the lights are turned off in a building, an...
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- Draw a ladder logic diagram for the timer scenario shown.arrow_forwardDraw a ladder logic diagram for the timer scenario shown (draw out the timer delays too)arrow_forwardDraw a ladder logic diagram for the timer scenarios given below. (I've asked you guys PLC questions multiple times please just answer them). IT'S A SOFTWARE QUESTION STOP REJECTING IT.arrow_forward
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