RS flip flop

[johneedw]

Dear friends,

I want to get a flashing output from *S7-200 PLC , I've design a simple ladder

to do this but the output doesn't flashing yet!..

The attached image is showing the RS f.flop i designed which doesn't flashing !.

Please advice me to make this circuit flashing !..

Waiting for kind help !...

 

[shooter]

an FF does not flash it just changes state, you will need something with a timer etc.

 

[Pete.S.]

You could try Special Memory bit SM0.5 for flashing. Will flash one time per second.

 

[johneedw]

Dears Shooter& pete.S.,
Thank you for kind help..
But i need to learn how to run cycles to change the RS FF state at each one ?!..Help me please...