JPS6430346A - System for grouping communications items - Google Patents

Abstract

PURPOSE:To reduce the load of transmitting and receiving a global message to be transmitted to all addresses of each equipment by making communications items classified according to an purpose into groups, setting plural bits to indicate the above-mentioned communications items to be received as orders corresponding to respective groups and providing an address code. CONSTITUTION:In a communications system to decide the communications items to be received by the decoding of the address code, plural groups are provided by the combination of the communications items, respective items are indicated as the orders corresponding to respective groups. Simultaneously, the bit to indicate the communications items to be received is set and the address code is provided corresponding to respective bits. Consequently, at a receiving side, by setting the bit corresponding to the purpose of the equipment and, simultaneously, corresponding to the communications items to be received, the data of the communications items to follow the purpose of its own can be received. Simultaneously, since the global message to be commonly received can be received, a necessity to transmit the messages of the same contents for respective communications items can be eliminated.