plc counters

PLC Counter Reset: 4 Methods and When to Use Each

Resetting a PLC counter sounds simple until it bites you mid-batch. This guide covers every reset method, when each one is right, and the gotchas that cause missed counts.

PLC Counter Preset vs Accumulator: What Each Does

The preset and accumulator in a PLC counter do very different jobs. This guide explains each one, how they interact, and the real-world gotchas you need to know.

CTU vs CTD: PLC Counter Instructions Compared

CTU counts up from zero; CTD counts down from a preset. Learn when to use each, how they differ across platforms, and how to wire both into working ladder logic.