Ladder Diagram horizontal lines of control logic are called what?

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Multiple Choice

Ladder Diagram horizontal lines of control logic are called what?

Explanation:
In ladder logic, the horizontal lines that carry the control logic from the left power rail to the right are called rungs. Each rung represents a single logical step: the devices drawn along the rung (like contacts) form a condition, and if that condition is met, the output coil at the end of that rung is energized. The vertical lines are the rails, which provide power, while the elements placed on the rung (contacts and coils) are the actual logic components. So the horizontal line itself is the rung.

In ladder logic, the horizontal lines that carry the control logic from the left power rail to the right are called rungs. Each rung represents a single logical step: the devices drawn along the rung (like contacts) form a condition, and if that condition is met, the output coil at the end of that rung is energized. The vertical lines are the rails, which provide power, while the elements placed on the rung (contacts and coils) are the actual logic components. So the horizontal line itself is the rung.

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