What is ISO 11898 standard?

The ISO 11898 standard is a CAN (Controller Area Network) protocol used in various industrial automation applications. It is an international standard that defines the physical and data-link layer of the CAN communication model. The standard specifies the communication parameters and protocols required for reliable and efficient data transmission over a CAN network.

Physical Layer

The physical layer of the ISO 11898 standard defines the electrical and signaling characteristics required for communication between CAN devices. It specifies the voltage levels, termination resistors, and wiring topology required for proper signal transmission. By adhering to these specifications, devices from different manufacturers can interoperate seamlessly on the same CAN network.

Data-Link Layer

The data-link layer of the ISO 11898 standard defines the frame format and protocol used for error detection and correction. It specifies the structure of the CAN frame, including the start-of-frame (SOF) bit, arbitration field, control field, data field, CRC field, acknowledgment field, and end-of-frame (EOF) bit. These components ensure reliable and accurate data transfer between CAN nodes.

Benefits and Applications

The ISO 11898 standard provides several benefits for industrial automation systems. Firstly, it enables high-speed and robust communication between devices, allowing for real-time monitoring and control in complex applications. Secondly, it ensures interoperability between devices from different manufacturers, facilitating easy integration and expansion of existing systems. Moreover, the standard's error detection and correction mechanisms enhance the reliability and integrity of transmitted data, making it suitable for safety-critical applications such as automotive and aerospace industries.