| 摘要 |
<P>PROBLEM TO BE SOLVED: To perform source code level debugging without requiring decompilation etc. during debugging and making system operation unstable. <P>SOLUTION: On a development support device 60 side, a compiler 62 generates an optimized machine language object 67 and a debuggable machine language object 68, by inputting source code 66 of a graphic language program and compiling it. A decompression order of each graphic element at generation of the object 67 is stored in a decompression order correspondence table 69, and compilation is performed according to the decompression order stored in the decompression order correspondence table 69 when generating the object 68. On a PLC 80 side, the optimized machine language object 67 (84) is executed in normal time, and the object 67 is switched to the debuggable machine language object 68 (85) and executed at debugging time. <P>COPYRIGHT: (C)2013,JPO&INPIT |
