
LogixPro PLC Lab Manual for Programmable Logic Controllers
5th Edition
ISBN: 9781259680847
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
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Question
Chapter 7, Problem 11P
Program Plan Intro
Anti-tie down circuit:
The term “anti-tie down circuit” refers to a non-repetitive circuit which enables the circuit to operate for one cycle. The circuit must be activated by pushing both start buttons to operate the cycle each time.
Timer ON Delay (TON):
- TON refers to an on-delay timer.
- The on-delay timer is the most commonly used timer.
- TON counts the time-based intervals as soon as the instruction becomes true.
- Here, the output changes its state from low to high when the timer provides some time delay (instruction goes from OFF to ON state).
Given:
Assume that the two palm start buttons are named as “SW1” and “SW2”. It is given that both buttons should be pressed at the same time within 0.5 seconds. It is also given that the circuit does not allow operating the press with one button.
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Chapter 7 Solutions
LogixPro PLC Lab Manual for Programmable Logic Controllers
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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