MOTOR VEHICLE COMMUNICATION PROTOCOL WITH AUTOMATIC DEVICE ADDRESS ASSIGNMENT

摘要

Devices on a communication bus enter a Ring Mode during which a master device assigns addresses to slave devices on the bus. In the Ring Mode, each slave device repeatedly attempts to send a first message informing the master device of the existence of that particular slave device. This mode includes a procedure for resolving collisions messages on the communication bus. After addresses have been assigned to all of the slave devices, a Master/Slave Mode commences. In this latter mode, each slave device sends messages over the communication bus only in response to a request from the master device.