The invention provides a programmable controller, microcomputer (100A) performed during the treatment of self diagnosis of A, computer will not use the B system (100B) of the second diagnostic pulse output unit (110B). In addition, micro B system (100B) at least will not perform self diagnosis and treatment of A related processing. The output timing stagger like this make the diagnosis of A system and B system to ensure that all of the pulse diagnosis processing (self diagnosis of A / B) independence. Therefore, through self diagnosis, A can easily verify the independence of A system and B system from the A system side. In addition, the first diagnostic pulse group is simultaneously output in parallel by the first diagnostic pulse output unit (110A). Therefore, since there is no need for loop control of each external input device, the independence of the A system and the B system can be verified in a short time.
【技术实现步骤摘要】
【国外来华专利技术】
【技术保护点】
一种可编程控制器,其中,多个外部输入设备、和对从这些外部输入设备输入的输入信号组进行处理的处理装置被多重化为多个系统,在所有系统的输入信号组一致时,判定为输入了真正的输入信号,在不一致时,进行异常停止处理,其特征在于,一个系统的处理 装置具有:诊断脉冲输出单元,以一个系统固有的定时向其它系统的处理装置并行输出诊断脉冲组;检测单元,输入从其它系统的处理装置的诊断脉冲输出单元输出的诊断脉冲组,并只在这些脉冲期间切断输入信号组的传输;和异常判定单元,在 上述输入信号组的信号与来自自身系统的上述诊断脉冲输出单元的诊断脉冲的输出对应地发生了变化的情况下,进行异常停止处理。
【技术特征摘要】
【国外来华专利技术】...
【专利技术属性】
技术研发人员:加藤圣,荒木力,
申请(专利权)人:株式会社捷太格特,
类型:发明
国别省市:JP[日本]
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