| 摘要 |
PURPOSE:To save the man-power of maintenance personnel, by counting the retrial of instructions at a failure of an electronic computer and automatically switching the operating conditions of the retrial such as normal operating instruction and voltage regulation instruction according to the output of count. CONSTITUTION:If a failure takes place in the process that an input instruction from an input/output device 3 is operated and executed, a retrial instruction is outputted from a controller 2, and the 1st retrial instruction is outputted to a count means 4, which counts the 1st retrial instruction. A normal operation instructing device 5 making retrial with normal operation is operated until this count reaches a specified number of times, the count is inputted to the controller 2 for the execution of the retrial. If the system is not restored with this trial, an output from the count means 4 is switched to a logic voltage fluctuation instructing device 6, this output fluctuates the logic voltage of the system through the controller 2 by + or -3-5%, and if the function is not recovered even with the operations of several times, the output of the means 4 is switched to a device 7 instructing clock frequency change and the retrial changing frequency is performed. |
