| 摘要 |
PROBLEM TO BE SOLVED: To exactly reproduce the operation of control program while suppressing unnecessary signals from the outside based on a process until an abnormal state occurs by recording, preserving and reproducing an input event for changing the running of a program. SOLUTION: By instructing recording processing while input/output processing is executed by operating a control program 20 for an input/output device 2, with a machine clock as a unit, interruption information corresponding to the control program 20 is recorded at an address instructed by the machine clock in an information save memory 230. When reproducing processing is instructed, the input of interruption to the control program 20 is disconnected by a disconnecting means 231 and contents in the information save memory 230, namely, an interrupt signal corresponding to the control program 20 is applied to the control program 20. Therefore, abnormal interrupting processing is reproduced by instructing the error interruption to the control program 20 without being affected by noises from a control hardware 22, mechanism part 21 and control panel 24 or the like. |
