| 摘要 |
PROBLEM TO BE SOLVED: To automatically perform restoration and to continuously use an optional board without an operator. SOLUTION: The contents of a memory 7 inside the optional board 5 holding a control software and a mirror memory 3 inside the memory 3 storing the same contents as the memory 7 are compared. When the contents are different, the control software is reloaded to the memory 7 inside the optional board 5. That is, an original control program is reloaded and automatic restoration is performed. Also, when polling to the control program is abnormal, the original control program is reloaded similarly and the automatic restoration is performed. |
