PLC Timers - Retentive Timer - Time Accumulator - TONR Instruction

In this video, you will learn the PLC timers ladder logic programming.

A TONR timer also called an on-delay retentive timer, is an instruction that begins timing when the input parameter (IN) transitions from 0 to 1.

The instruction "Time accumulator" is used to accumulate time values within a period set by the parameter PT.

When the signal state at the IN input changes from "0" to "1" (positive signal edge), the time measurement is executed and the time PT starts.

While the time PT is running, the time values are accumulated that are recorded when the IN input has signal state "1".

The accumulated time is written to the ET output and can be queried there.

When the duration PT expires, the output Q has signal state "1".

The Q parameter remains set to "1", even when the signal state at the IN parameter changes from "1" to "0" (negative signal edge).



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