Codesys Sfc Example Apr 2026

Lena needed an .

The SFC was in with a coil halfway submerged. codesys sfc example

The problem was chaos. Operators would skip steps, hit "EMERGENCY RESET" mid-dip, or manually open the drain while the coil was submerged. The old ladder logic was a 40-rung monster of interlocking seals that no one understood. Lena needed an

The transition to Step 0 required Acid_Level < 5% . But the drain valve closed after 2 seconds because the "DIP" step's action had been deactivated. She forgot: Actions in SFC only run while their step is active. Operators would skip steps, hit "EMERGENCY RESET" mid-dip,

In CODESYS SFC, she right-clicked Step 20 and selected . She created an Action named Acid_Emergency . She set its qualifier to N (Non-Stored, executes while step is active) and S (Set/Stored for emergency).