PROGRAMMABLE LOGIC PACKAGE
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ISBN: 9781260900620
Author: Petruzella
Publisher: MCG
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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 PACKAGE
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
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