| 摘要 |
PROBLEM TO BE SOLVED: To enable the easy and sure grasping of an abrupt failure or a change before and after the occurrence of the failure, and sufficient monitoring for a detail by displaying all monitor data without thinning out the monitor data. SOLUTION: When trend graphs T etc. are displayed on a display 2 by sequentially plotting the monitor data Di etc. involving predetermined monitor items E etc. along an X axis with the X axis as a time base, and with a Y axis as the size of the monitor data Di etc., the monitor data Di etc. are sequentially divided at a predetermined number N of data, a plurality of monitor data Di, etc. at least in respective groups G, etc. to be divided are overlappingly displayed on the Y axis in respective plot positions P1, P2 etc. of the X axis, and the respective groups G etc. to be divided are sequentially displayed along the X axis. COPYRIGHT: (C)2008,JPO&INPIT
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