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.

Timer On Delay (TON) Timer Description

TON Timer Description :

• TON Timer instruction to set Time Delay of the output by set PT Time of Timer. 
• Input Changes From 0 to 1 (positive signal edge) Timer PT time Start.
• When PT Time Equal to Elapsed Time Output Change From 0 to 1 (Output ON).
• Output Remain On as long as Input is ON.
• When Input Change from 1 to 0 Output change from 1 to 0 (Output OFF).
• Timer Starts when new positive edge detect at input side.
• Current Time Store at ET Output.
• TON Timer Starts at Set PT Time and ends when PT Time Equal to ET Time.
•  ET Output Reset when input changes from 1 to 0.

TON Timer Parameters :

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

TON Timer Timing Diagram :

TON Timer

TON Timer Example :

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

Pulse Timer Description

Pulse Timer Description :

• Pulse Timer instruction to set the output for a programmed duration.
• Input Changes From 0 to 1 (positive signal edge) PT time start when timer start.
• Output set for the duration of PT time start.
• If new positive edge detects output is not affect when PT time running.
• Current time value store at ET Output.
• Timer Starts at set PT Time and ends when the value of the time reach at PT.
• PT Time elapsed and Input Change From 0 to 1 and Output change from 1 to 0.

Pulse Timer Parameters :

Parameters	Declaration	Description
IN	Input	Start input
PT	Input	Set time value
Q	Output	Pulse output
ET	Output	Current time value

Pulse Timer Timing Diagram :

Pulse Timer

Pulse Timer Example :

• Start PB change from 0 to 1 Pulse Timer Preset Time Start and Motor Changes From 0 to 1 (Motor ON).
• Timer Current Running Time Store at the Elapse Time.
• When PT Time Completed and Motor Change From 1 to 0 (Motor OFF).

Motor Start & Stop Logic with Pushbutton

Logic Description :

• Two Pushbutton Provide Start and Stop.
• Start Pushbutton Press Motor Start.
• Start Pushbutton release motor start continuous.
• Stop Pushbutton Press motor stop.

✔ First We Make Input and Output List As Per Below.

	Input List		Output List
X0	Start Push Button	Y0	Motor
X1	Stop Push Button

Logic Sequence:

1. Motor Start/Stop Logic
   
   
   
   
2. Start Pushbutton Press Motor Start & Start Pushbutton Release Logic
   
   
   
3. Stop Pushbutton Press Motor Stop Logic
   

Download Logic PDF :

Tutorial-1 : Motor Start & Stop Logic with Pushbutton :- Download