| 摘要 |
PROBLEM TO BE SOLVED: To provide a programmable controller which can verify faults occurring to input/output devices controlled by I/O devices differing in update timing extremely easily. SOLUTION: I/O data regarding specific input/output devices 22, 24, and 28 are inputted and their log data are stored in a log data storage part 52 in the update timing of a PC 12 and compared with reference log data stored previously in a reference log data storage part 54. Consequently, a faulty place can easily be verified irrelevantly to the update time of the I/O devices 18 and 20. |
