Rockwell Automation AutoMax Enhanced Ladder Language Reference Manual - Manual (Page 51)

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3.2.4 Example of a TOF Instruction
This logic shows that as long as switch1 is
false, timer2 increments to 5000. When 50
seconds have elapsed, the timer sets Q false,
causing the variable tank_fill to be set false.
3.3 Timer On Delay (TON)
Use this instruction to enable an activity at a preset interval. While EN is true, the
instruction increments the value in Elapsed until it reaches the value you defined in
TPreset. When the value in Elapsed equals the value in TPreset, output Q is set.
The value in Elapsed is in increments of 0.01 seconds.