Firstly, the Component Object Model (COM) and the OPC Data Access Standard (OPCDA) based on COM were introduced.

 
  • 論文首先介紹了組件對象模型(COM)的基本概念,然后簡(jiǎn)要介紹了基于COM技術(shù)的OPC數據訪(fǎng)問(wèn)規范。
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