DATA COMMUNICATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To easily transfer data and to securely transfer the data by using common connection ID for communication among plural units. SOLUTION: This system is provided with a function for setting common connection ID between one independent source node 202 and N-pieces of destination nodes 204 and logically connecting the respective nodes 202 and 204. The source node 202 receiving the packet of a connection ID notice from a controller 200 transmits the broadcast packet of an inquiry to the destination node 204. Connection ID designated by the controller 200 is written in the packet. The destination node 204 transmits the broadcast packet. Similar connection ID is also written in the packet and the source node 202 collates and identifies the ID.