ControlLogix ladder rung with a compare instruction:

The ControlLogix ladder rung for checking the value stored at “Data_3” is equal to “60” or not is given below:

Explanation:

From the above diagram, the compare instruction is used for the given ControlLogix ladder rung is “EQU” instruction. This instruction is used to check if the two values in the sources are equal.

The “EQU” instruction in ControlLogix is used to check if two values that are stored in “Source A” and “Source B” are equal...

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Chapter 15.5, Problem 3RQ

Chapter 15.5, Problem 5RQ

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Chapter 15 Solutions

Programmable Logic Controllers

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Solution Summary: The author explains that the compare instruction is used for the ControlLogix ladder rung for checking if the two values in the sources are equal.

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