HFB3030L;
HFB3030L現貨;
HFB3030L供應。
相信大家都知道,各種品牌PLC都具有診斷功用,當PLC報錯時,我們應該充分利用軟件中的診斷功來查找問題和原因。比如當發現PLC上的錯誤指示燈ERROR燈出現閃爍或常亮的情況,就可以打開軟件的診斷菜單,查看是什么錯誤,里面有錯誤發生的原因,及解決的辦法,這也是非常方便的。
除此之外,一般情況下,當發生錯誤時,8009、8060~8068其中之一的值被寫入特殊數據寄存器D8004中(三菱PLC為例),假定這個寫入D8004中內容是8064,則經過查看D8064的內容便可知道錯誤代碼。與錯誤代碼相對應的錯誤內容可以查看PLC手冊的錯誤代碼表,這樣也可以查出出現錯誤的原因。
當然了,一般來說,當PLC出現異常時,我們首先要查看電源電壓是否正常,I/O端子的螺絲和接插件是否松動,以及有無其他異常。然后再根據PLC上的各種LED的指示燈狀況,以查看PLC本身和外部有無異常,按這樣的方法來進行排查。
19. 盛年不重來,一日難再晨。(東晉陶淵明雜詩)
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