| 摘要 |
PURPOSE:To shorten a device response time by a method wherein an interrupt signal is delivered to second CPU conducting a sequence processing operation, at the time point when first CPU conducting a relay operation completes the relay operation of a digitally-converted system voltage-current value, and the second CPU executes the processing operation of a prescribed sequence. CONSTITUTION:A CPU 11 for a relay operation executes a prescribed relay operation 22 synchronously with a sampling signal 21. At the time point when the prescribed operation is completed, the CPU 11 for the relay operation delivers an interrupt signal 23 to CPU 12 for a sequence processing. Receiving the interrupt signal from the CPU 11 for the relay operation, the CPU 12 for the sequence operation reads the result of the relay operation, executes a prescribed sequence processing operation 24 and determines whether delivery of a trip output is needed or not. According to this method, the waste of time in delivery and receipt of data between the CPU 11 for the relay operation and the CPU 12 for the sequence processing can be eliminated. |
