| 摘要 |
PURPOSE:To improve transmission efficiency by performing the transmission of the same information to plural nodes and various information processors by setting a group address and one time transmission of information. CONSTITUTION:When a communication among communication stations is carried out with information packeted by adding a destination and a transmission origin address to information, a group address holding circuit 61 which is freely rewritable by controllers of the communication stations is provided independently of an address holding circuit 25 which hold the address peculiar to each communication station. Further, a means 60 compares the destination address of a receive packet with the address of the circuit 25 and the address of the circuit 61. When a communication station or processor connected thereto transmits the same information to communication stations in the system or processors connected thereto, the information is transmitted after the group address is transferred, so that the information is transmitted to plural communication stations and processors at the same time. |
