Trigger at start of simulation

I have a triggered system in Simulink, that works perfectly excepts it needs to be triggered once at the start of simulation to start working. Kindly tell me a way to mitigate the issue.

Answer 1

[Benjamin Thompson]

One way is using an Initial Condition block per my attached example. I use an enabled subsystem in the example because a triggered subsystem by definition needs a second time step to satisfy the conditions of the trigger. The same example also uses a clock source to compare to time zero, which is another way to have a signal that is true only at the start of simulation.