What is ISO 11898?

Introduction

ISO 11898 is a technical standard that defines the specifications for Controller Area Network (CAN) communication in automotive and industrial applications. The CAN protocol was initially developed by Robert Bosch GmbH in the 1980s to enable robust and reliable communication between microcontrollers and electronic devices within a vehicle, without the need for a host computer.

Key Features of ISO 11898

ISO 11898 provides guidelines for implementing the CAN protocol and outlines various aspects of the communication system. Here are some key features of this standard:

Data Link Layer: ISO 11898 specifies the data link layer protocol, including frame formatting, error detection, acknowledgement mechanisms, and flow control.

Physical Layer: The standard defines the electrical characteristics of the CAN bus, such as voltage levels, signal timing, and transmission rates.

Network Topology: ISO 11898 supports both single-wire and differential two-wire configurations for connecting multiple nodes on the CAN bus.

Bit Rate: The standard allows for flexible bit rates ranging from 10 kbps up to 1 Mbps, depending on the specific requirements of the application.

Applications of ISO 11898

The CAN bus, based on ISO 11898, has become widely adopted in the automotive industry for various applications, such as engine management, powertrain control, safety systems, and vehicle diagnostics. It enables seamless communication among different components in a vehicle, improving efficiency, reliability, and overall performance. Additionally, ISO 11898 is also utilized in industrial automation, smart grid systems, and other areas where robust and deterministic communication is required.

Conclusion

ISO 11898 is a significant standard in the field of CAN communication, providing a framework for implementing reliable and efficient data exchange in automotive and industrial settings. Its comprehensive guidelines ensure compatibility between different devices and facilitate seamless integration within a network. As technology continues to advance, ISO 11898 evolves to meet the changing demands of the industry, paving the way for future innovations in communication protocols.