Timer off program

[mommy_prince]

I'm just learning PLCs and my teacher wants us to write a program for a single solenoid pneumatic valve that will extend when a button is pressed, stay on, then when the stop button is pressed it will count to five then retract. I wrote the program with an interlock start stop rung and can not figure out how to delay the retraction. He will not let us use the Limit Switch. HELP

 

[tom_stalcup]

Go ahead and post the code you have so far... And we can show you how to modify it to do what you need.

 

[SimonGoldsworthy]

Do you think using the limit switch will help you ?

 

[veratronic]

I don't know If this can help...

ON OUT
--||---------------(L)--

OFF TON
--||-------------[5sec]-

TON.Done OUT
--||---------------(U)--