| 摘要 |
PURPOSE:To prevent malfunction due to the input of an erroneous data from being generated, by calculating a difference between position data read out from a data storing means and the position data after correcting the position data, and informing the fact that the difference is not within a tolerance. CONSTITUTION:The position data stored in a RAM1 is read out, and a comparison switch 10 is turned ON by inputting the position data after correction from an operating box 2. The difference between a read out position data and the position data after correction is calculated by a CPU3, and the value is judged whether the difference is within a prescribed tolerance. When it is within the tolerance as a judged result, the position data after correction is written on the RAM1. When it is out of the tolerance, an alarm display device 4 is lit, then, an alarm is issued. At this time, since an inputted position data after correction is invalid, a data valid/invalid switch 11 is turned OFF, then the data is deleted.
|
