1. PLC programming: Timers and Counters Programming
Juan David Bastidas Rodríguez
Escuela de Ingenierías Eléctrica, Electrónica y de Telecomunicaciones
Universidad Industrial de Santander

2. Timers and Counters Programming
Objectives
Understand timer types, operation, and implementation.
Understand counter types, operation, and implementation.
Understand core and special timing instructions.
Use timers and counters in industrial process control.

3. Timers fundamentals

4. ON-DELAY Timers (TONs)

5. ON-DELAY Timers (TONs)
Example 1:

6. ON-DELAY Timers (TONs)
Example 2:

7. OFF-DELAY Timers (TOFs)

8. OFF-DELAY Timers (TOFs)
Example 1:

9. OFF-DELAY Timers (TOFs)
Example 2:

10. Retentive/Time-Accumulator Timers (TONRs)

11. Retentive/Time-Accumulator Timers (TONRs)
Example 1:

12. Retentive/Time-Accumulator Timers (TONRs)
Problem example 1:

13. Retentive/Time-Accumulator Timers (TONRs)
Problem example 1:

14. Retentive/Time-Accumulator Timers (TONRs)
Problem example 1:

15. Retentive/Time-Accumulator Timers (TONRs)
Problem example 1:

16. Retentive/Time-Accumulator Timers (TONRs)
Problem example 2:

17. Retentive/Time-Accumulator Timers (TONRs)
Problem example 3:

18. Retentive/Time-Accumulator Timers (TONRs)
Problem example 3:

19. Counters Fundamentals

20. Count Up Counters (CTU)

21. Count Up Counters (CTU)
Example 1:

22. Count Down Counters (CTD)

23. Count Down Counters (CTD)
Example 1:

24. Count Up and Down Counters (CTUD)

25. Count Up and Down Counters (CTUD)
Example 1:

26. Pulse Generation/Pulse Timer (TP)

27. Pulse Generation/Pulse Timer (TP)
Example 1:

28. Homework
Simulate at least 3 problems that include timers and counters.