Can Bus System. It is a message based protocol designed originally for multiplex electrical wiring within automobiles to save on copper but can also be used in many other contexts. This article introduced the controller area network or can.
An example of can bus working with obd ii. When data bits are being transmitted the can high line goes to 3 75v and the can low drops to 1 25v thereby generating a 2 5v differential between the lines. Sensor data via the can bus consisting of two wires can low and can high.
The can bus system isn t something you hear car fans talking about on a daily basis but it s one of the most important parts of any modern vehicle.
The can bus is a message based protocol that is based on a set of rules. The can bus system enables each ecu to communicate with all other ecus without complex dedicated wiring. An example of can bus working with obd ii. In general all of the devices connected to the can bus are designed to follow the rules.