Goals of this lesson
Model 4a simulates a simple communication between two processes.
Figure 1: Model 4a - Message Exchange / IYOPRO-Link
So, sometimes the upper process will be started earlier and sometimes later than the constant (lower) process and the message will be sent to either an already started and waiting or a not yet existing process instance. This leads us to two different possibilities:
Note: In addition you can add a Transport Delay for each message flow under Optional Properties, which is also represented by a stochastic distribution.