ON DELAY TIMER – TON

ON – Delay Timer delays the Output (Done bit) to become state “1” for the predefined PRESET time.

Following Video shows the operation of TON – ON delay timer.

All the timer blocks having following Common parameters,

1. EN – Enable bit, ON Logic which enables the Timer Block.
2. DN – Done bit, This the output of Timer Block i.e., Delayed ON logic.
3. PRE -Preset Value, The Required Time delay set by the Programmer.
4. ACC – Accumulated value, current running time after the timer block is enabled.

Once the TON block is enabled it runs its accumulated time value and the output DN (Done) bit becomes “Logic High” (Logic 1 – ON state) when accumulated Value reaches Preset Value.

The DN (Done) bit remains in “Logic High”, until EN (enable) bit is enable by the Input logic.