---[Auto]---[Start]---[Stop]---(Motor_Internal) Rung2 – Jog mode:
CASE state OF 0: // Red Red := TRUE; Green := FALSE; Yellow := FALSE; IF Timer_Done THEN state := 1; Timer(5s); 1: // Red+Yellow Red := TRUE; Yellow := TRUE; IF Timer_Done THEN state := 2; Timer(5s); 2: // Green Green := TRUE; IF Timer_Done THEN state := 3; Timer(5s); 3: // Yellow Yellow := TRUE; IF Timer_Done THEN state := 0; Timer(5s); END_CASE; Statement: An analog input (4–20 mA) from a 0–100°C sensor. Scale to real temperature.
Rung1 – Auto mode:
IF Reset_Button THEN Count := 0; Conveyor := TRUE; END_IF;
Use CTU counter with Preset = 100, Reset = Reset_Button. 🔹 Exercise 5 – Traffic Light (Sequential) Statement: Traffic light sequence: Red → Red+Yellow → Green → Yellow → Red. Cycle time: 5s each.
---[Jog]---[Jog_Button]---(Motor_Internal) Rung3 – Output:
| Rung | Logic | |------|-------| | 1 | Start AND Stop AND OL → Coil Motor (with Motor parallel contact) |
---[X1]---[X2]---[Lamp]---(Lamp) ??? Not directly → use SR flip-flop Better: use a toggle logic in Structured Text (ST):