Timer Off Delay (TOF) Timer Description

TOF Timer Description :

• TOF Timer instruction to set Time Delay resetting of the output by set PT Time of Timer. 
•  Input Changes From 0 to 1 (positive signal edge) Timer PT time Start and Output change from 0 to 1 (ON).
•  When PT Time Equal to Elapsed Time Output Change From 1 to 0 (Output OFF).
• Output Remain On as long as PT Time Running.
• When PT Time Expire Output change from 1 to 0 (Output OFF).

TOF Timer Parameters :

Parameters	Declaration	Description
IN	Input	Start input
PT	Input	Duration of the off delay
Q	Output	Output that is reset when the time PT expires
ET	Output	Current time value

TOF Timer Timing Diagram :

TOF Timer

TOF Timer Example :

• Start PB change from 0 to 1,TOF Timer Preset Time Start.
• When Start PB Changes from 0 to 1 Output Change from 0 to 1 (Motor ON).
• When PT Time Completed Motor Changes From 1 to 0 (Motor OFF).
• Motor set to on as long as PT Time Running.