scope:

NM defines a set of services for node monitoring. Figure 1 shows how the NM is embedded into a system and that the NM shall be adapted to specific requirements of the bus system used or to the resources of the nodes. NM consists of the following: - interface to interact with the Application Programming Interface(API); - algorithm for node monitoring; - internal interfaces (NM <-> COM, etc.); - algorithm for transition into sleep mode; and - NM protocol data unit (NMPDU). Adaptation to bus protocol specific requirements consists of the following: - CAN, VAN, J1850, K-BUS, D2B, etc.; - error handling, e.g. bus-off handling in a CAN, transmission line error handling; and - interpretation of the status information, e.g. overrun or error active/passive in a CAN. Adaptation to node resources consists of the following: - scaling of the NM as a requirement of the node; and - application-specific usage of the NM services.