This paper discusses the Model-Based design approach in the applicative design of Cyber Physical Systems and, in particular, focuses upon the abstraction of the Communications resources used in such systems. Two relevant cases are considered in the discussion, namely the HTTP protocol and the ModBUS-RTU protocol.

The discussed approach has been implemented in an existing Model-Based technology, TaskScript. The above mentioned protocols, among others, have been made available to the applicative designer at the Model Level, abstracted according to the presented approach. Results are reported, demonstrating the effectiveness of the approach: real case applications have been effectively developed in less than one day.