1. On/Off Control (bang-bang) Proportional Control
Control of Motion
On/Off Control (bang-bang)
Proportional Control
closed loop
open loop

2. Digital Logic Expressions
Cut when part is ready, and cylinder is retracted, and emergency stop is not on, or while cylinder is not fully extended and emergency stop is not on.

3. Pneumatic Logic Elements
Directional control valve
Shuttle valve - OR function
Twin pressure valve - AND function
Other functions
Check valve
Speed control valve
Time delay valve

4. Electric Logic Control
Input and Output
Ladder diagrams
Timing diagrams
State machines

5. I/O Activity Levels Active = TRUE Inactive = FALSE
Active High - active level is +24 volts
Active Low - active level is 0 volts (GND)

6. Boolean Arithmetic

7. Ladder Diagrams
Coil
N.O. Contact
N.C. Contact

8. Example – Light Switch

9. Example – Light Relay

10. Example – Light Relay, “And” Logic

11. Example – Light Relay – “OR” Logic

12. Timing Diagrams

13. State Machines

14. State Diagram

15. Logic Equation and Ladder Diagram

16. Example – Latching Relay Logic

17. Another Example
iSENSOR S0 S1 S2
iEXT
/iSENSOR•iRET
oCYL=1
oCYL=0

18. Example #2 State Diagram
iSENSOR S0 S1 S2
iEXT
/iSENSOR•iRET
oCYL=1
oCYL=0
cS0 = cS2•/iSENSOR•iRET + cS0•/iSENSOR + /cS0•/cS1•/cS2
cS1 = cS0•iSENSOR + cS1•/iEXT
cS2 = cS1•iEXT + cS2•/(/iSENSOR•iRET)
= cS1•iEXT + cS2•(iSENSOR + /iRET)