A TOF timer starts to accumulate time:A) when the rung makes a true to false transition.B) when the rung makes a false to true transition.C) when the done bit is set to 1.D) when the done bit is reset to 0.

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Vontinette Polhamus · Accepted Answer

Final Answer : A, Explanation :  A TOF (Timer Off-Delay) timer starts to accumulate time when the rung condition goes from true to false. This is because the TOF timer is designed to keep the output on for a specified period after the input turns off.

A TOF timer starts to accumulate time:

A) when the rung makes a true to false transition.
B) when the rung makes a false to true transition.
C) when the done bit is set to 1.
D) when the done bit is reset to 0.

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