| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for eliminating a problem such as the loss of a token or the stop of a network even when the node is connected to the network in a state where the node numbers are superimposed. SOLUTION: The plurality of nodes 1, 2, and 3 are connected to a token pass network 5 for token pass communication in a network system. Each one of the nodes 1, 2, and 3 includes: a counter for indicating times to receive the tokens transmitted to the self node; and a management table for storing the node number of the self node. When the node newly participates in the network, node information constituting the network is collected in the phase of the initialization. The node participates in the network when the node number being the same as that of the self node does not exist in the node information. When the same node number is present, the node does not participates in the network, and displays alarm to indicate node number superimposition. COPYRIGHT: (C)2004,JPO
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