The digital networks demonstrated to be an effective solution in automation. The connection of different modules from different manufacturers into a single bus for the exchange of data and control is a challenge for the agricultural machinery Brazilian industry, although this technology is consolidated in automobiles, aircraft and the factory floor. The benefits obtained with digital networks are obvious, but they need implementation of protocols networks. In the agricultural area, the international standard ISO 11783 shows strong potential to become the reference standard for the exchange of data between modules on tractors and agricultural implements. This standard, also known as ISOBUS, is in the advanced stage of development. It contains fourteen documents and its development is supported by groups called "Task Force" in Europe, USA, and recently in Brazil. Implementations of this standard are now being presented in the international market, in fairs and demonstrations of application of this technology. Brazil should invest and dominate the technology, to inquire after international compatibility in both the technological point of view as commercial. In this context, this work encourages the national development in applications with ISOBUS standard, presenting two studies of cases, whose modules communicate with equipment market compatible with the standard. These practical experiences complement academic works on this subject, which emerged in recent years in Brazil.