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 6P
Program Plan Intro
Retentive Timer ON (RTO):
- RTO refers to an on-delay timer.
- RTO counts the time-based intervals as soon as the instruction becomes true.
- It retains the accumulated value as soon as instruction goes false or when power cycle occurs.
Explanation of Solution
b.
Required time:
- In “rung 2”and “rung 3”, the two RTO timers are interconnected.
- Here, the “present” value of “rung 2” is “2900” and the “present” value of “rung 3” is “1780”.
- Add these two present values to get the time required to produce the output.
- The sum of the two values is “4680”...
Explanation of Solution
c.
Conditions to be satisfied:
- The power required to be supplied to “L1” and close the input “PB1” contacts to turn the “rung 4” to “true”.
- Once, “PB1” becomes true, the “rung 2” star...
Explanation of Solution
d.
Status of the output:
- The RTO instruction used in the given diagram stores the timed count of timer and counts the time even if the power is lost or restored.
- The “rung 3” is required to activate the “DN” sign...
Explanation of Solution
e.
Result when PB2 is ON:
- If the input PB2 is “ON”, then the reset instructions of the timers “T4:1” and “T4:2” will make the “rung 1” as “true”...
Explanation of Solution
f.
Required accumulated time:
- The “rung 2” becomes “true” and the RTO instructions are started to execute when PB1 input contact is closed.
- The timer “T4:1” starts timing as long as the accumulated value attains the present value “2900”...
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make corrections of this program based on the errors shown. this is CIS 227 .
Create 6 users: Don, Liz, Shamir, Jose, Kate, and Sal.
Create 2 groups: marketing and research.
Add Shamir, Jose, and Kate to the marketing group.
Add Don, Liz, and Sal to the research group.
Create a shared directory for each group.
Create two files to put into each directory:
spreadsheetJanuary.txt
meetingNotes.txt
Assign access permissions to the directories:
Groups should have Read+Write access
Leave owner permissions as they are
“Everyone else” should not have any access
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Screenshot of /etc/passwd contents showing your new users
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⚫ your circuit diagrams for your basic bricks, such as AND, OR, XOR gates and 1 bit multiplexers,
⚫ your circuit diagrams for your extended full adder, designed in Section 1 and
⚫ your circuit diagrams for your 8-bit arithmetical-logical unit, designed in Section 2.
1 An Extended Full Adder
In this Section, we are going to design an extended full adder circuit (EFA). That EFA takes 6 one bit inputs: aj, bj,
Cin, Tin, t₁ and to. Depending on the four possible combinations of values on t₁ and to, the EFA produces 3 one bit
outputs: sj, Cout and rout.
The EFA can be specified in principle by a truth table with 26 = 64 entries and 3 outputs. However, as the EFA
ignores certain inputs in certain cases, it is easier to work with the following overview specification, depending only
on t₁ and to in the first place:
t₁ to Description
00
Output Relationship
Ignored
Inputs
Addition Mode
2 Coutsjaj + bj + Cin, Tout= 0
Tin
0 1
Shift Left Mode
Sj = Cin,
Cout=bj, rout = 0
rin, aj
10
1 1
Shift Right…
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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