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bnnyygy
bnnyygy
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發(fā)帖數量: 543 個(gè)
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樓主  發(fā)表于: 2018-03-21 22:18
功能:

讀取 寫(xiě)入變頻器頻率。


套路:

1步 :判斷是否需要寫(xiě)入,設定值比較讀取值對比。

一樣,直接到2步。不一樣,到第3步。


2步,讀取程序,完成后A640.01 MOVD 位傳送 組合 響應的字節。返回到第1步。


3步,寫(xiě)入程序,完成后A640.01標志返回第2步。



問(wèn)題:

因為讀取發(fā)送 都要SET A640.0標志位,每次SET后,響應的D存儲器就會(huì )清零,造成讀取出來(lái)的值閃爍(監控狀態(tài))。




大家有啥好的套路沒(méi)有?

想法是,讓PLC一直讀變頻器的實(shí)際值,檢測到和設定值不一樣就寫(xiě)入。
bnnyygy
bnnyygy
級別: 家園?
精華主題: 0
發(fā)帖數量: 543 個(gè)
工控威望: 653 點(diǎn)
下載積分: 1909 分
在線(xiàn)時(shí)間: 615(小時(shí))
注冊時(shí)間: 2016-09-20
最后登錄: 2025-06-06
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1樓  發(fā)表于: 2018-03-21 22:47

  
  
  

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