ISO 20794‑2 is part two of the multi-series standard that describes the application layer protocol including the application measurement and control data management, message transfer and fault management.
The application and application layer contain the following descriptions:
ISO 20794‑2 also specifies:
ISO 20794‑2 on clock extension peripheral interface (CXPI) application layer is useful for:
CXPI is an automotive low-speed single-wire network. It is an enabler for reducing vehicle weight and fuel consumption by reducing wire counts to simple devices like switches and sensors.
CXPI serves as and is designed for automotive control applications, for example, door control group, light switch, and HVAC (Heating Ventilation and Air Conditioning) systems.
ISO 20794‑2 provides application layer for clock extension peripheral interface (CXPI) that includes application measurement and control data communication to exchange information between applications in different nodes based on message communication.
ISO 20794‑2 gives wake-up and sleep functionality.
ISO 20794‑2 describes two kinds of communication methods that can be selected at system design by each node:
ISO 20794‑2 lays out guidelines to performs error detection and reports the result to the application.
ISO 20794‑2 helps in application error management.
ISO 20794-2