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NOTE:
You can use PLC simulation software to run following ladder logic code and I am using FATEK FBS 24MA
plc and simulation software
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1:
Show two ways on a hand-drawn ladder diagram through which a counter can be reset?
Ans
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Through CLR as given below;

ii
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2:

Repeat Q1 for timer?
Ans
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By using enable option in the timer;

ii
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3:

Output (Y5) is set to 1 after ten seconds by X1, after which even if X1 is turned off the
output Y5 does not go to zero
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Q
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The timer
should only be turned off by X4?
Ans
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5:

A stream of components is going through a conveyor belt
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Out of ten components there are 6 good and 4
bad components
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When ten parts have been checked Y9 should turn ON?

Ans
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6
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6
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Show the changes and result in diagram below:

Q
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a:

Convert the the following into ladder logic
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RESULT:

Q
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b:

What changes will I need to make if I wish to start the program only when Tank A is not empty (
a switch called X5 is 0)
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8
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Use the
following step logic diagram:

LADDER LOGIC DIAGRAM:

Q
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b:

Draw the changes below that would have to be made if we wish to have the pedestrian
crossing signal having an amber light in between the red and green lights
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9:

Using Timers and Step ladder Logic design a control of Elevator

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