| 摘要 |
PROBLEM TO BE SOLVED: To execute plural calculations and to improve convenience when point data are to be updated by installing operation information for updating variable value data in area definition information of a memory. SOLUTION: In a data memory 12, area definition information storage areas 21 where plural pieces of area definition information defining the storage areas of point data are stored, and plural point data storage areas 22 where point data are stored are installed. Calculation parameters (operation information) required for updating corresponding point data are stored in plural area definition information. Which calculation parameter is to be used is previously selected and set at the time of registering the area definition information. Thus, plural calculations can be executed and convenience considerably is promoted when point data are updated. |
