Rockwell Automation AutoMax Enhanced Ladder Language Reference Manual - Manual (Page 52)

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3.3.1 Input Parameters for the TON Instruction
This table lists the inputs for the TON instruction and the variable type and data
type/range that each input supports.
Parameter Description Variable Type Data Type/Range
EN While this input is true, the instruction begins the timer
operation. When EN is false, the value in Elapsed is reset
to zero.
Connect a Boolean input or output.
Name Enter the name of the timer variable you want to use for
this timer.
data structure timer
See also About
Timer Variables"
TPreset Enter the value that Elapsed must reach before the
instruction sets the output Q. Enter a value in increments
of 0.01 seconds up to 248.5 days.
This value is stored in name.TPreset.
constant double integer
(0 to 2147483647)
0 to 248.5 days in
0.01 second intervals