Hi, I am struggling with the following problem: After Object ACC has received event RELEASE, then object ACC shall activate CONSENT and then wait for 800 ms and then deactivate CONSENT. This is a requirement in my specification. I am using Ada in a large project and can't find out how I am supposed to assure that the time requirement above is fulfilled. This is a safety critical system. I am looking in the Annex D (Real Time) but can't seem to find a secure solution. Maybe the delay until statement is a part of the solution, but how can I be sure that the ACC will deactivate CONSENT directly after those 800 ms ? Maybe interrupts is an alternative solution ?? Thanks, Magnus Öhlund Celsius Aerotech [log in to unmask]