| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a retain-memory saving method of a programmable controller requiring only a short processing time when the retain memory-saved data-change processing included in application programs is carried out a plurality of times in the programmable controller which has a normal memory cleared by power off, a retain memory not cleared by power off, and a flash memory saving the application programs as data memories to store results of operations, even if the flash memory is used near the restricted zone. <P>SOLUTION: When the retain memory-saved data-change processing included in the application programs is carried out a plurality of times, the write processing to the flash memory is carried out after a specified time. <P>COPYRIGHT: (C)2012,JPO&INPIT |
