OPC Historical Data Access

This group of standards, created by the OPC Foundation, provides COM specifications for communicating data from devices and applications that provide historical data, such as databases. The specifications provides for access to raw, interpolated and aggregate data (data with calculations).

单词	OPC HDA
释义	OPC HDA 英语百科 OPC Historical Data Access This group of standards, created by the OPC Foundation, provides COM specifications for communicating data from devices and applications that provide historical data, such as databases. The specifications provides for access to raw, interpolated and aggregate data (data with calculations).
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OPC HDA

OPC Historical Data Access