No doublts CAN offers high reliability to the user, it requires a powerful Application Layer in order to achieve high interoperability. Therefore choosing a reliable Application Layer is an important procedure. DeviceNet fulfils all these requirements, believe me. Presentation Concerned with the presentation of characters, numbers and other information. Session Coordinates and synchronises the communication parameters of the receiving and transmitting nodes and maintain communication session.
Transport Insulates higher layers from the details of networking.
Handling message fragmentation. Network Defines how network information passes from one node to the others. Data-Link Handle the exchange of the data. Physical Method of the device is physically connected to the bus, e.g. cabling system. Updated 15th October 1998.