PROGRAMMABLE LOGIC CONTROLLERS (LOOSE PA
5th Edition
ISBN: 9781264206216
Author: Petruzella
Publisher: MCG
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Expert Solution & Answer
Chapter 13, Problem 9P
Explanation of Solution
Items to be suspected:
- The fault condition is obtained when an instruction is given and the correct status indication is not showed by the
programming device monitor. - It might be because of the reason that the input module is not converting the input signal into the logic level voltage required by the processor module...
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A press's machine cycle is as follows:
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O O O O O O
Explain how a timer interrupt leads to a context switch.
A press's machine cycle is as follows:
;Lowering the ram: the ram is lowered when
The safety screen was open before the cycle began and
is now closed (limit switches S4 and S5 actuated)
The press is in the home, i.e. upper position (limit switch
.S6 actuated)
Two-hand switches S1 and S2 were not actuated prior to
.the cycle but are now
Halting the ram during lowering: the ram stops
;immediately when
One of the two-hand switches is released. Or
The safety screen is opened. Or
.The ram is down (limit switch S3 actuated)
Raising the ram: If the ram is down (limit switch S3 风
actuated), it is raised by the eccentric drive. The safety
.screen can be opened and both two-hand switches released
The machining cycle is completed when the ram reaches the
.home position (limit switch S6 actuated)
The designer needs for
******
state boxes for drawing the ASM-chart for
the controller of the aforementioned system
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7
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Chapter 13 Solutions
PROGRAMMABLE LOGIC CONTROLLERS (LOOSE PA
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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