The we built today demonstrates why SFC is the king of sequential logic. It provides a clear, visual, and maintainable structure for state-based control. Unlike traditional languages, SFC separates what happens (action) from when it happens (transition), drastically reducing programming errors.

: No action is needed if using qualifier N , as the lamp automatically turns OFF when leaving Step 1. Transition : Set to Step2.t > T#2s .

[Step 20: DIP] --(45s & no EStop)--> [Step 30: RINSE] | | (EStop_Pressed) v [Step 99: EMERGENCY_RETRACT] --(Acid_Level<5%)--> [Step 0: IDLE]

Each step can have (e.g., Set , Reset , Set with time delay).

IF Stop_PB THEN PLC_PRG(); // Reset all actions Vacuum_On := FALSE; Arm_Extend := FALSE; Arm_Retract := FALSE; SFCReset(TRUE); END_IF

Codesys Sfc Example -

: No action is needed if using qualifier N , as the lamp automatically turns OFF when leaving Step 1. Transition : Set to Step2.t > T#2s . codesys sfc example

[Step 20: DIP] --(45s & no EStop)--> [Step 30: RINSE] | | (EStop_Pressed) v [Step 99: EMERGENCY_RETRACT] --(Acid_Level<5%)--> [Step 0: IDLE] The we built today demonstrates why SFC is

Each step can have (e.g., Set , Reset , Set with time delay). : No action is needed if using qualifier

IF Stop_PB THEN PLC_PRG(); // Reset all actions Vacuum_On := FALSE; Arm_Extend := FALSE; Arm_Retract := FALSE; SFCReset(TRUE); END_IF

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