Programmable Logic Controllers
5th Edition
ISBN: 9780073373843
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 13, Problem 2P
A fuse is blown in an output module. Suggest two possible reasons why the fuse blew.
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A microcontroller of PIC16F84A and a 7-segment LED are used to form an down-
count counter from 9 to 0. The input devices and 7-segment LED on the operation
panel are shown in Figure 3.1 while the related electronic circuit and Flowcode
program are as shown in Figures 3.2 and 3.3, respectively. Answer the following
questions if the counter is operated at high level input voltage those are controlled by
the input devices for the data input and stop functions.
Count
Stop
LED Counter
Figure 3.1 A countdown counter using 7-segment LED
Count
(1)
X1
U1
16
15
17
OSCICLKIN
oscziCLKOUT
RAD
RA1
18
Stop
RAZ
RAS
RAATOCKI
4
MCLR
4MHZ CRYSTAL
C1
C2
RBOINT
RB1
RB2
RB3
RB4
RBS
RB6
RB7
22pF
PIC16F84A
SV
RO
Figure 3.2 Electronic cireuit for the counter
-lelal
The input waveform shown in the figure below is applied to an inverter, which is used to
operate a light on a control circuit. Draw the timing diagram of the output waveform in
proper relation to the input.
VIN
HIGH
LOW
urr
Draw a plc ladder diagram for blinking lights with start and stop button. Please help me with this. Thank you in advanced.
Chapter 13 Solutions
Programmable Logic Controllers
Ch. 13 - Prob. 1RQCh. 13 - Prob. 2RQCh. 13 - Prob. 3RQCh. 13 - List three potential noise-generating inductive...Ch. 13 - Prob. 5RQCh. 13 - Prob. 6RQCh. 13 - Prob. 7RQCh. 13 - Under what condition can a ground loop circuit be...Ch. 13 - Prob. 9RQCh. 13 - What operating state will cause an inductive load...
Ch. 13 - Prob. 11RQCh. 13 - Prob. 12RQCh. 13 - Prob. 13RQCh. 13 - Prob. 14RQCh. 13 - Prob. 15RQCh. 13 - List four uses for the data monitor function.Ch. 13 - Prob. 17RQCh. 13 - Prob. 18RQCh. 13 - Prob. 19RQCh. 13 - Prob. 20RQCh. 13 - Prob. 21RQCh. 13 - Prob. 22RQCh. 13 - Prob. 23RQCh. 13 - Prob. 24RQCh. 13 - Prob. 25RQCh. 13 - Prob. 26RQCh. 13 - Prob. 27RQCh. 13 - Prob. 28RQCh. 13 - Prob. 29RQCh. 13 - Prob. 30RQCh. 13 - Prob. 1PCh. 13 - A fuse is blown in an output module. Suggest two...Ch. 13 - Prob. 3PCh. 13 - Prob. 4PCh. 13 - Prob. 5PCh. 13 - Prob. 6PCh. 13 - A specific output is forced on, but the LED module...Ch. 13 - An electronic-based input sensor is wired to a...Ch. 13 - Prob. 9PCh. 13 - Prob. 11PCh. 13 - Prob. 12PCh. 13 - Prob. 13PCh. 13 - The program of Figure 13-39 is supposed to execute...
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