Automating Manufacturing Systems - Process Control and ...

plc boolean - 6.27
to simpler ladder logic.
A B D D
Y
B
A
A C D
18. a) Develop the Boolean expression for the circuit below.
b) Simplify the Boolean expression.
c) Draw a simpler circuit for the equation in b).
A
B
C
B
A
X
C
19. Given a system that is described with the following equation,
X = A+ ( B⋅
( A+
C)
+ C) + A ⋅B ⋅( D + E)
a) Simplify the equation using Boolean Algebra.
b) Implement the original and then the simplified equation with a digital circuit.
c) Implement the original and then the simplified equation in ladder logic.
20. Simplify the following and implement the original and simplified equations with gates and
ladder logic.
A+
( B + C + D) ⋅ ( B+
C) + A⋅
B⋅
( C+
D)
6.8 PRACTICE PROBLEM SOLUTIONS
1. AND
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