Through the fault diagnosis mannered null network of the

摘要

PROBLEM TO BE SOLVED: To eliminate the time difference between the instruction to a stop node and a notice to a non-stop node in a cooperation control node group in a network system, and a trouble diagnosing method of the network system.;SOLUTION: In the network system 10, a plurality of nodes 12 connected over a multiplex communication line 14 mutually control in coordination to constitute a cooperation control node group. For diagnosing a trouble in the cooperation control node group, the system 10 issues both an instruction for executing the operation stop or operation fix to be fed to a node 12 in the cooperation control node group, and a notice showing the operation stop or operation fix of the node 12 to be fed to all other nodes 12 in the cooperation control node group, using both as each.;COPYRIGHT: (C)2006,JPO&NCIPI