FISHER ROSEMOUNT 602-156 

FISHER ROSEMOUNT 602-156 

   可編程控制器PLC運行時可能會出現死機的情況，這給工業生產造成不可預估的損失，因此，首先要了解PLC死機的原因，針對原因進行排查，軟件或硬件錯誤都有可能導致PLC死機，下面分別進行介紹：
 
    1、硬件方面 
    （1）I／O竄電，PLC自動偵測到I／O錯誤，進入STOP模式。 
    （2）I／O損壞，程序運行到需要該I／O的反饋信號，不能向下執行指令。 
    （3）擴展模塊(功能型，如A／D)線路干擾或開路等。 
    （4）電源部分有干擾或故障。 
    （5）PLC的連接模塊及地址分配模塊出故障。 
    （6）電纜引起的故障。 
    2、軟件方面 
    （1）觸發了死循環。 
    （2）程序改寫了系統參數區的內容，卻沒有初始化部分。 
    （3）保護程序啟動：硬件保護、限制使用時間(針對貨款收回) 
    （4）數據溢出，步長過大、看門狗 (可修改DOG時間)動作。

本公司主營品牌:AB ABB GE 西門子 施耐德 ?？怂共_ 

               英維斯  西屋 等歐美進口品牌

 注：圖片僅供參考，如需實物，垂詢！！

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