1. Chapter - State Based Design Systems have modes of operation. The controller should move sequentially between these states

2. State Diagrams General Rules For Construction: 1. Consider the system, What does the system do normally? Does the system behavior change? Can something change how the system behaves? Is there a sequence to actions? 2. List ‘modes’ of operation where the system is doing one identifiable activity that will start and stop. Keep in mind that some activities may just be to wait.

3. Construct a state diagram for an elevator

4. Consider the Intersection below:

5. Draw a reasonable state diagram

6. Convert the state diagram to ladder logic using block logic methods:

7. Convert the following state diagram to ladder logic A Priority Problem

8. Write the Boolean equations for the state diagram below:

9. Convert the equations to ladder logic using the Delayed Update method

10. Convert the state diagram to ladder logic using state transition equations:

11. Example: Develop a control description for an injection molding machine with the different methods described in this chapter. Develop ladder logic for the one that is best suited.