| 摘要 |
PROBLEM TO BE SOLVED: To provide a field network system which allows a field apparatus to optimally operate an object to be controlled such as a plant using the latest data constantly. SOLUTION: In the field network system, a plurality of field apparatuses are connected mutually via an IP network. The respective field apparatuses determines whether or not data can be transmitted at a requested time, and when cannot, transmits information on a processing time which is required for processing of a function block and data transmission. COPYRIGHT: (C)2009,JPO&INPIT
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