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Accessing OPC HDA Server Using DataSocket in LabVIEW

Primary Software: LabVIEW Development Systems>>Full Development System
Primary Software Version: 7.0
Primary Software Fixed Version: N/A
Secondary Software: Other NI Software>>DataSocket

Problem: I am trying to access an OPC HDA server via LabVIEW using DataSocket. I can access a DA server fine, but I cannot seem to receive any data from the HDA server. How do I access an OPC HDA server in LabVIEW?

Solution: OPC HDA (Historical Data Access) servers can not be accessed from LabVIEW. DataSocket is an OPC client and it can be used to access OPC servers. However, HDA servers are not supported. Only OPC DA (Data Access) servers can be accessed.

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Report Date: 03/18/2004
Last Updated: 10/07/2005
Document ID: 37HHOLDS

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