This lesson provides the foundational knowledge required to understand and effectively use Timer and Counter instructions in Studio 5000 Logix Designer (for Allen-Bradley/Rockwell Automation PLCs). These instructions are essential for adding control and sequencing based on time and events in any industrial automation system.

Learning Objectives:

Identify and differentiate between the three main types of timer instructions (TON, TOF, RTO).
Identify and differentiate between the two main types of counter instructions (CTU, CTD).
Explain the function of the main control bits (.EN, .TT, .DN for timers; .CU, .CD, .DN for counters).
Apply the RES (Reset) instruction correctly to both timers and counters.

Timers and Counters Explained (TON, TOF, RTO, CTU, CTD)