| 摘要 |
PROBLEM TO BE SOLVED: To perform improvement so as to structurally enhance flexibility and adaptability in a communication system which includes a plurality of network nodes of a control-system and/or a drive-system network. SOLUTION: The network system uses an array-structure instruction of a software control portion to operate a switching unit (8) of a network node (1, 2, 3, 4, 5); thus, the network system is divided into different networks (11, 12); the networks (11, 12) include respective communication lines (6, 7) which are separate from each other; and furthermore, two network nodes (3, 4) of the two networks (11, 12) are so structured as to be mechanically connected to each other via two lines (9) which are each formed between the two network nodes (3, 4). COPYRIGHT: (C)2009,JPO&INPIT
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