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时间:2018-01-19 16:51

  可编程控制器PLC运行时可能会出现死机的情况,这给工业生产造成不可预估的损失,因此,首先要了解PLC死机的原因,针对原因进行排查,软件或硬件错误都有可能导致PLC死机,下面分别进行介绍:

  1、硬件方面 

  (1)I/O窜电,PLC自动侦测到I/O错误,进入STOP模式。 

  (2)I/O损坏,程序运行到需要该I/O的反馈信号,不能向下执行指令。 

  (3)扩展模块(功能型,如A/D)线路干扰或开路等。 

  (4)电源部分有干扰或故障。 

  (5)PLC的连接模块及地址分配模块出故障。 

  (6)电缆引起的故障。 

  2、软件方面 

  (1)触发了死循环。 

  (2)程序改写了系统参数区的内容,却没有初始化部分。 

  (3)保护程序启动:硬件保护、限制使用时间(针对货款收回) 

  (4)数据溢出,步长过大、看门狗 (可修改DOG时间)动作。

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  我们也愿意参照其价格向您提供进一步的折扣。只要您诚心购买,

  如果还有其他任何问题,请随时与我们联系。

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  我们有大量库存的控制系统部件。 我们还有许多新的硬件和停产备件,以帮助支持你现有的控制系统。

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