Rte_IStatus
Rte_IStatus allows a request for the communication status of implicit communication. You can use the status to determine if an implicit read access was successful. With that information, you can model appropriate behavior for failure cases.
In the block diagram editor for software components, a request for the communication status of an implicit read action (red box in the screenshot) is added via the
Communication Status button in the Basic Blocks toolbar or palette. The result can be used as shown in the figure below.

In the ESDL editor for software components, the communication status of an implicit read action can be requested (bold) and used as follows:
Status_impl = (Receiver.speed).status() == OK;
if (Status_impl)
{
SpeedSWC = Receiver.speed;
}
See also
Status of Explicit and Implicit Access
Receiving from a Port with Status Request