Timer: Timer is mainly used to keep an output ON for a specific length of time. It provides a preset delay to the control actions. In a timer, the output will be energized when the preset value becomes equal to the accumulated value. Three different types of timers include Delay-OFF timer, Delay-ON timer and Delay-ON-Retentive timer. Retentive Timer On (RTO): RTO refers to an on-delay timer. RTO counts the time-based intervals as soon as the instruction becomes true. It retains the accumulated value as soon as instruction goes false or when power cycle occurs.

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Chapter 7, Problem 7P

Program Plan Intro

Timer:

Timer is mainly used to keep an output ON for a specific length of time.

It provides a preset delay to the control actions.

In a timer, the output will be energized when the preset value becomes equal to the accumulated value.

Three different types of timers include Delay-OFF timer, Delay-ON timer and Delay-ON-Retentive timer.

Retentive Timer On (RTO):

RTO refers to an on-delay timer.

RTO counts the time-based intervals as soon as the instruction becomes true.

It retains the accumulated value as soon as instruction goes false or when power cycle occurs.

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