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plc timers

6 articles tagged “plc timers”.

Flat vector diagram of three cascading PLC TON timers in ladder logic where each timer done bit triggers the next step in a timed sequence
plc timersladder logicton timer

Cascading PLC Timers: Chain TON Logic Right

Learn how to cascade TON timers in PLC ladder logic to build reliable multi-step timed sequences. Real examples, common mistakes, and field-tested patterns.

Aug 2, 2026 · 7 min read

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 diagram of three PLC timer ladder rungs labeled TON, TOF and TP each with a timing waveform showing input and output signal behavior
plc timersladder logicton tof tp

PLC Timer Ladder Logic: 5 Practical Examples

Five practical PLC timer ladder logic examples covering TON, TOF and TP instructions, with timing diagrams, gotchas and field-tested advice for Rockwell and generic platforms.

Aug 1, 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

Flat vector infographic comparing TON on-delay, TOF off-delay and TP pulse PLC timer waveforms side by side with labeled input and output signal bars
plc timersladder logiciec 61131-3

TON vs TOF vs TP: PLC Timer Comparison

TON, TOF and TP are the three IEC 61131-3 standard timer types. Learn exactly how each one behaves, where each one fails you, and which to pick for your application.

Jul 19, 2026 · 8 min read

Flat vector diagram of S7-1200 TON TOF and TONR IEC timer function blocks connected to a PLC CPU icon
siemens s7-1200tia portalplc timers

S7-1200 Timers in TIA Portal: TON, TOF and TONR

Learn how TON, TOF and TONR timers work on the S7-1200 in TIA Portal, including IEC timer data types, instance DBs, preset syntax and real wiring gotchas.

Jul 18, 2026 · 9 min read

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