DIGITAL RELAY DEVICE
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专利名称：DIGITAL RELAY DEVICE
发明人：MATSUYAMA TAKAKAZU,UCHIUMI
NOBUAKI,SANO KAZUHIRO,KOBAYASHI
JUN
申请号：JP8197790
申请日：19900329
公开号：JPH04138013A
公开日：
19920512
专利内容由知识产权出版社提供
摘要：PURPOSE:To check that operation time over is not occurring by providing a means, which measures the time from completion of specified processing execution to the next cycle start in every cycle, and outputting the results. CONSTITUTION:CPU 7 executes various kinds of processing, according to the program written in a ROM 11, for the latched input data, and realizes various kinds of functions. In a digital relay device, a start signal is given to the CPU 7 in every fixed cycle, and the specified processing is executed. The processing route, which is used each time, varies with various factors, and the processing time varies according to it. By instructing the count operation start by software processing to a timer at completion of specified processing execution, and making it stop the count operation at the timing of the next cycle start, the surplus time to the fixed cycle in that cycle can be counted from the count value.
申请人：HITACHI LTD
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