@Kitonum 

Thank you

@acer 

This work, but is not the same plot. I want to plot X(t) over T(t)

plot([T(t),X(t),t=-1..1],x=…y=…)

@Preben Alsholm 

Thank you, i will try it,but i don’t have Maple 2018.
 

It work with Maple 13, a little bit complicatet for a simple thinks?

Download RHS_TEST.mw

@Preben Alsholm 

Download RHS_TEST.mw

@Preben Alsholm 

@tomleslie 

Thank you. It was long way to do a simple think.

I use Simulink for simulation, you have Stop element to stop the simulation let say if the v(t) > 100 .

O.k thank you again 

Download Event_Test.mw

@tomleslie 

@tomleslie 

Thank you. 

I want to stop the simulation if the s(t) > const.

Or same problem but s(t) > f(s(t)) .

 How can i do it?

@Carl Love 

Thank you. This is easy solution 

@Carl Love 

Thank you this solution work!,,

@nm 
I get a Error

Error, Sleep is not a command in the Threads package

@one man 
Thank you.

This is my event statment that dos'nt work ?

s(tau) is a solution of the dsolve(...)

@rlopez 
I have Maple 13

@one man 
Thank you . I will try it. I did't found it at help for dsolve

@laurent 

Thank you got idea