Programmable Logic Controllers
5th Edition
ISBN: 9780073373843
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
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Question
Chapter 10, Problem 3P
Program Plan Intro
Timer:
- Timer is special type of clock used to measure some specific time intervals.
- Three types of timer
- Delay-OFF Timer
- Delay-OFF timer is activated when it is turned on and does not wait for the entry of input.
- It is used to count downwards from the programmed time.
- The value of timer is cleared when the enabling input is in off state.
- Delay-ON Timer
- Delay-ON timer is activated by its input.
- It is used to count upwards to the programmed time.
- The value of timer is cleared when the enabling input is in off state.
- Delay-ON-Retentive Timer
- Delay-ON-Retentive Timer is activated by the inputs and starts accumulating time.
- It retains the accumulated value even if the rung goes false.
- It can be reset only by RESET command.
- Delay-OFF Timer
Thumbwheel switch:
- Thumbwheel switch is a switch which is used to convert numerical values displayed on disk where the numbers are converted into binary, decimal and hexadecimal values.
- It contains a function called lock which helps to retain the preset value from being modified.
- It can be operated only by a thin object like pen tip.
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Chapter 10 Solutions
Programmable Logic Controllers
Ch. 10 - In general, what do data manipulation instructions...Ch. 10 - Prob. 2RQCh. 10 - Prob. 3RQCh. 10 - Prob. 4RQCh. 10 - Prob. 5RQCh. 10 - Prob. 6RQCh. 10 - Prob. 7RQCh. 10 - Prob. 8RQCh. 10 - Prob. 9RQCh. 10 - Prob. 10RQ
Ch. 10 - Prob. 11RQCh. 10 - Prob. 12RQCh. 10 - Prob. 13RQCh. 10 - Prob. 14RQCh. 10 - Prob. 15RQCh. 10 - Prob. 16RQCh. 10 - Prob. 17RQCh. 10 - Prob. 18RQCh. 10 - Prob. 19RQCh. 10 - Prob. 20RQCh. 10 - Prob. 21RQCh. 10 - Prob. 22RQCh. 10 - Prob. 1PCh. 10 - Prob. 2PCh. 10 - Prob. 3PCh. 10 - Prob. 4PCh. 10 - Prob. 7PCh. 10 - Prob. 8PCh. 10 - Prob. 9PCh. 10 - Prob. 10PCh. 10 - Write a program that will cause a light to come on...Ch. 10 - Write a program that will cause a light to come on...
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