METHOD AND BUS SYSTEM FOR AUTOMATIC ADDRESS ASSIGNMENT AND TELECOMMUNICATION STATIONS TO BE INSERTED IN THIS SYSTEM OR IN ITS FRAMEWORK

摘要

A method for automatic address assignment is disclosed, said method being based on a distance measurement, a master (M) transmitting via the bus a preamble (P) which is received by all the slaves which are to be addressed. The slaves react to the preamble (P) by transmitting a response signal sequence (A). A slave (S2) which is located upstream, in the direction of the master (M), of a slave (S3) which transmits a response signal sequence (A) registers the response signal sequence (A) of the slave (S3) and subsequently waits for a new preamble (P). The slave (Sz) which does not register any response signal sequences (A) from other slaves is the last slave (Sz), seen from the master (M), without address allocation on the bus. This slave (Sz) switches into a state in which it is ready to receive an address-assigning telegram (T) from the master (M), with which address-assigning telegram (T) it is assigned an unambiguous address. During the next cycle of the method, the slave (Sz) which has just been assigned an address no longer reacts to the preamble (P) so that another slave evaluates the constellations at the bus in such a way that it switches into a state in which it is ready to receive the address-assigning telegram. In this way, all the slaves without an address are gradually assigned an address.