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What is the difference between opc da and opc hda?

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Anonymous

 ∙ 12y ago
Updated: 9/28/2023

OPC DA will access the real time value from control system.

OPC HDA will access the real time value of historian processed. Hence the historian will save the value in their database as well as it feed to OPC server also.

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Wiki User

 ∙ 12y ago

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