OFF DELAY TIMER – TOF

OFF Delay Timer (TOF) delays the OFF status its Output bit (DN bit).

• OFF Delay Timer makes Done (DN) bit to State “1” once it is enabled.
• DN bit Remains in State “1” till the timer is enabled.
• Once the timer input is disabled, TOF Timer keeps its output to State “1” till the time delay (preset time) is over after the completion of the time delay the output becomes state “0”. i.e., TOF timer delays the output (DN) to become state “0” when the Enable bit changes from State “1” to State “0”.

Following Video shows the operation of TOF – OFF delay timer

1. EN – Enable bit, ON Logic which enables the Timer Block.
2. DN – Done bit, This the output of Timer Block i.e., Delayed OFF logic.
3. PRE -Preset Value, The Required Time delay set by the Programmer.
4. ACC – Accumulated value, current running time after the timer block Input becomes state “0”.