OPC Historian .Net Client Component for development of OPC HDA client applications with C# or VB.NET

OPC .Net client server toolkits for OPC DA, HDA, AE, XML-DA

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OPCHDA.NET

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OPC Historian .NET Client Development Component
Version Info

You can develop OPC Historical Data Access (HDA) clients in .NET (C# or VB.NET) without having to think about the OPC DCOM interface. The OPCHDA.NET wrapper assembly provides classes and methods that take advantage of the .NET features and make OPC HDA Server access real simple and quick because:

	The OPC functions are provided as methods with an easy to use .NET friendly interface. The data is converted to/from .NET data types. The hand coded .Net wrapper functions are highly optimized and work in 32-bit and 64-bit operation.
	A test client and several sample clients are supplied in C# and VB source code.
	The Visual Studio integrated help contains detailed information including the OPC specifications. Context sensitive help displays the needed information without long searches.
	It can be used for stand-alone OPC HDA clients or combined with OPCDA.NET and/or OPCAE.NET for OPC DA / HDA / AE client applications.

OPC HDA .NET Wrapper for OPC HDA clients

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The HDA Test Client application can be used as a diagnostic tool to see what OPC HDA servers are available and if they can be accessed.

The test client can also be used as a development helper tool. The server can be browsed to get the items supported by the server and the item names can be copied into the code of a client being developed.

All OPC HDA 1.2 functions can be called interactively to check if the values are returned as expected. This may help determine if an unexpected behavior has to searched in the client being developed or somewhere else.

Accessing UA Servers
OPCHDA.NET with the OPCHDA.NET-UA option enables clients to access OPC UA servers and Classic OPC HDA servers through the same API.
The server ID (ProgID or URL) determines the type of serve accessed.

No external converters are required and DCOM is completely eliminated.

To make the application test environment complete there is a Test Server included in the OPCHDA.NET package. This server is based on the evaluation version of the OPCHDA.NET Server Toolkit and is tested for OPC HDA V1.2 compliance. It can be adapted to meet the application needs. There is for each item a text file with the data. These files can easily be modified and files can be added to have additional items available. As a product evaluation this server has a 30 minute run-time restriction. For software tests this is rarely a restriction since test runs are usually shorter.

The OPCHDA.NET Features Include
	VB and C# Wizards for quick project creation
	Highly optimized .Net wrapper code
	BrowseTree class shows the browse result in Forms/WPF TreeView controls
	Works in 32-bit and 64-bit operation mode
	Full source code available
	Visual Basic .NET sample client
	VC# .NET sample client
	Visual Studio .Net integrated help
	Developer license with one time fee, no run-time licenses required
	The license includes an Updates/Support subscription for 90 days.

System Requirements
	Windows 7, 8.x, 10 or Windows Server 2008, 2012, 2016 32 or 64bit .NET Framework 4.x
	Visual Studio 2010, 2012, 2013, 2015 or 2017, C# or Visual Basic

COMtoUA Converter Server

Accessing UA Servers thru a Converter

Existing Classic OPC HDA applications can access OPC UA servers without having to be modified.

The COMtoUA converter server enables OPCHDA.NET based client applications to access UA-HA servers.

Download the free evaluation version by placing an online order. The evaluation is a full featured version including the sample client source code. The run time is however limited to 30 minutes.

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