| 摘要 |
<p>The present invention has a program editing unit (11) for arranging function block diagram (FBD) components and connecting the arranged FBD components together; an execution sequence determination unit (13) for determining an execution sequence of the FBD components on the basis of position information and connection information regarding the FBD components; a component information management unit (12) for managing the position information and connection information regarding the FBD components; and a recompilation necessity determination unit (14) for determining the need to perform recompilation that accompanies a modification of the arrangement of the FBD components. When an FBD component for which arrangement is to be modified is specified in the program editing unit, the component information management unit extracts a position range in which the execution sequence will be the same even when the position of the FBD component specified by the program editing unit is modified, and the recompilation necessity determination unit determines that recompilation is not required to be performed when the position information after the arrangement of the specified FBD component has been modified is included in the position range extracted by the component information management unit.</p> |
