| 摘要 |
PURPOSE:To perform cooperative decentralized control by storing the operation state of each station even at each remote station in a bus transmission system wherein a master station designates remote stations to transmitting and a receiving stations and allows data transfer between the specified transmitting and receiving stations. CONSTITUTION:When the master station 5 designates a remote station 6 to a transmitting station, reading from and writing to the master station are performed from a system bus 10 through an interface 11 similarly to the case of designation of receiving station. Then, a transmitting address register 13 decides on the specified remote station as the transmitting station and stores data on it in a memory 12. The address of this remote station is transmitted to the bus through a checking circuit 15 and a transmitting and receiving circuit 16. The remote station 6 detects address coincidence and stores a selecting circuit 23 with information showing that the remote station is the transmitting station. Another station stores a memory 23 with information showing that the remote station 6 is the transmitting station. |
