f the output field devices. B)The choice of normally-open and normally-closed instructions for
f the output field devices. B)The choice of normally-open and normally-closed instructions for
Chapter22: Sequence Control
Section: Chapter Questions
Problem 6SQ: Draw a symbol for a solid-state logic element AND.
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28)Which of the following elements does not affect how a ladder logic program is developed?
A)The type, direct or inverse acting, and active state of the output field devices.
B)The choice of normally-open and normally-closed instructions for the PLC program.
C)The contact type and active state of the input field devices.
D)The requirement for current sinking or sourcing inputs and outputs.
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