Break complex machine behavior into manageable states and transitions.
🔧 Practical Steps:
| Step | Action |
|---|---|
| 1 | Define system states (e.g., IDLE, STARTING, RUNNING, FAULT, STOPPED). |
| 2 | Identify inputs/events that trigger transitions. |
| 3 | Create a state transition diagram (drawn or in code logic). |
| 4 | In your PLC code, use a CASE or IF block (or SFC) to manage states. |
| 5 | Each state has its own logic block — modular and easy to debug. |
🧠Tip:
Add a default/failsafe state (e.g., FAULT or SAFE_STOP) that overrides others if errors occur.
🧪 Test: Simulate transitions using HMI buttons or simulated inputs.