How many parts does ISO 11898 consist of?

ISO 11898 is a technical standard that defines the requirements and parameters for the Controller Area Network (CAN) bus system. The CAN bus system is widely used in various industries for reliable communication between electronic control units (ECUs), such as those found in automobiles, industrial automation systems, and other devices.

The Physical Layer

The first part of ISO 11898 is focused on the physical layer of the CAN bus system. It specifies the electrical characteristics, transmission medium, and connectors that should be used to ensure proper data transmission. This part ensures that devices using the CAN bus system can communicate with each other effectively and reliably.

Data Link Layer

The second part of ISO 11898 deals with the data link layer of the CAN bus system. This part outlines the protocols and procedures for error detection and error correction. It defines how data packets are formatted, transmitted, received, and acknowledged by the nodes on the network. The data link layer ensures the integrity of the data being transmitted over the CAN bus system.

Higher-Level Protocols

The third part of ISO 11898 focuses on higher-level protocols that can be implemented on top of the CAN bus system. These protocols define the structure and organization of data packets, as well as the rules for addressing, routing, and prioritizing messages. Higher-level protocols enable more complex communication scenarios and compatibility with different applications and systems.

In conclusion, ISO 11898 consists of three main parts: the physical layer, the data link layer, and the higher-level protocols. These parts together define the requirements and specifications for the CAN bus system, ensuring reliable and efficient communication between devices. Understanding these parts is essential when designing, implementing, and troubleshooting CAN bus systems in various industries.