OPC Labs EasyOPC “Classic” Core Library
DADataSource Enumeration
OpcLabs_EasyOpcClassicCore ActiveX DLL : DADataSource Enumeration
Description
Selects the data source for OPC reads (from device, from OPC cache, or dynamically determined).

 

UUID: b0e1f79b-7601-44b3-8013-9398e4151091

 

For more information, see DADataSource in .NET Reference.

Members
MemberValueDescription
DADataSource_ByValueAge0The data source (memory, OPC cache or OPC device) selection will be based on the desired value age and current status of data received from the server.
DADataSource_Cache1OPC reads will be fulfilled from the cache in the OPC server.
DADataSource_Device2OPC reads will be fulfilled from the device by the OPC server.
Remarks

For remarks, see DADataSource in .NET Reference.

Example

For examples, see DADataSource in .NET Reference.

 

 

Copyright © 2004-2024 CODE Consulting and Development, s.r.o., Plzen. All rights reserved. Web page: www.opclabs.com

Documentation Home, Send Feedback. Resources: Knowledge Base, Product Downloads. Technical support: Online Forums, FAQ.

Missing some example? Ask us for it on our Online Forums! You do not have to own a commercial license in order to use Online Forums, and we reply to every post.