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retentive timer

2 articles tagged “retentive timer”.

Side-by-side timing diagram comparing a retentive PLC timer that holds its accumulated value versus a non-retentive timer that resets to zero when the enable signal drops
plc timersretentive timerladder logic

Retentive vs Non-Retentive PLC Timers: Key Differences

Retentive and non-retentive PLC timers behave completely differently when the enable bit drops. Learn which to use, how each resets, and see real ladder examples across platforms.

Aug 2, 2026 · 8 min read

Flat vector timing diagram comparing a TON timer that resets on false rung with a retentive TONR timer that holds its accumulated value across multiple enable pulses
retentive timerplc timersladder logic

Retentive Timer in PLC Ladder Logic Explained

A retentive timer keeps its accumulated value when power is lost or the rung goes false. Learn how TONR works, when to use it, and see real ladder examples.

Aug 1, 2026 · 9 min read

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