Timers are one of the most often used functions in #PLC programming. #Timers are pre-defined functions. They are added to a PLC program as an instruction block, with parameters such as Enable, Preset Time, Accumulated Time, and Timer Reset built into the timer function. ▶ On-Delay Timer: Once the input of the timer becomes true, the timer is enabled. The timer times until the preset is reached, and the done bit is set. If the timer input is no longer enabled, the timer resets. Once set, the done