| 摘要 |
PROBLEM TO BE SOLVED: To continuously successively fetch data from a buffering device which is regularly updated, and detect positions and the number of overwritten data after one buffering cycle. SOLUTION: In the data acquisition method for the motor control system comprising a motor control device including the buffering device storing data regularly updated in an arbitrary cycle and an engineering tool for acquiring buffering data by communication and displaying it on a monitor, storage of new data in a buffer is determined by a change in data count, when new data is stored in the buffer, all data in the buffer is acquired and fetched in the ascending order of index, an index added to the data fetched at last is stored. When data is acquired from the buffering device next, the data is fetched in the ascending order on and after the stored index, whereby data with indexes regularly updated are continuously successively fetched. COPYRIGHT: (C)2008,JPO&INPIT
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