| 摘要 |
PROBLEM TO BE SOLVED: To provide a communication system for controlling an industrial apparatus connected to a sub-station at a high speed by restricting a decrease in effective transmission speed of transmission data, such as command and parameter. SOLUTION: Individual IDs are added to two or more transmission data generated and transmitted at a key station 1, and these plurality of different IDs are assigned to each sub-stations 101, 201. In the key station 1, an operation of transmitting sequentially the transmission data for use of each ID in a predetermined cycle is treated as one transmission loop. The key station 1 transmits repeatedly the transmission loop while each of transmission data is rewritten. Then, sub-stations 101, 201 extract and analyze only transmission data to which self station identification ID is added, and generate response data and send a reply to the key station 1 in a prescribed response cycle. COPYRIGHT: (C)2004,JPO
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