Are you having difficulties incorporating the OPC data into your solution? Need to do it quickly and in quality? If so, QuickOPC-COM comes to the rescue.

QuickOPC-COM is a set of components that simplify the task of integrating OPC into applications. Reading a value from OPC Data Access server, or writing a data value can be achieved in just one or two lines of code!

QuickOPC-COM is a radically new approach to access OPC data. Traditionally, OPC programming required complicated code, no matter whether you use OPC custom or automation interfaces. OPC Server objects must be instantiated, OPC Group objects must be created and manipulated, OPC Items must be added and managed properly, and subscriptions must be established and maintained. Too many lines of error-prone code must be written to achieve a simple goal – reading or writing a value.

The components can be used from various languages and environments. The available examples show how the components can be used from Visual Basic (VB), C++, VBScript (e.g. in ASP, or Windows Script Host), JScript, PHP, Visual Basic for Applications (VBA, e.g. in Excel), Visual FoxPro (VFP), and other tools. Any tool or language that supports COM Automation is supported.

• Specifications: OPC Data Access 1.0, 2.0 and 3.0, OPC Universal Architecture (under development).
• Tested for compliance with standards and interoperability.
• Supports operating systems from Windows 2000 to Windows Vista, Windows 7 and Windows Server 2008.
• Multi-threaded, non-blocking design for high performance.
• Internal messaging layer provides isolation between OPC communications and the custom client code, resulting in high resiliency.
• Automatically connects to and disconnects from OPC Servers.
• Automatically adds, removes and maintains OPC groups and items.
• Conserves resources behind-the-scenes by automatically disposing of objects that are not being used.
• No limits to number of connections, subscriptions, or tags.
• Automatic server status checking, detection of connection problems and server failures, and automatic reconnects.
• Maintains client state and reconstructs the internal state of OPC server after reconnection.
• Supports all flavors of OPC synchronous and asynchronous reads and writes, subscriptions, browsing, and property access.
• Multiple independent OPC server connections.
• Intelligent OPC Group parameter optimization.

Leaflet

QuickOPC is unbelievably easy to use - here is a complete Visual Basic (VB6) example which reads and displays OPC data from a common OPC server:

' Create EasyOPC-DA component Dim EasyDAClient As New EasyDAClient ' Read item value and display it Me.Text1 = EasyDAClient.ReadItemValue("", "OPCLabs.KitServer.2", "Demo.Single")

Do you think it can be any simpler? But the simplicity is not the only advantage; the component is also very powerful. Using complex heuristic algorithms to optimize itself on the fly, it provides the most efficient, fastest access to the OPC data.

C/C++ (native), Visual Basic, VBA, IIS, ASP, Delphi, PHP, Python, T-SQL, Visual FoxPro, VBScript, JScript, and any other tool and language able to consume COM automation objects.

You can download QuickOPC-COM 5.01 free trial, and also its associated QuickOPC-COM Bonus Pack 5.00.

The downloaded software runs with a trial license, and can be upgraded to full version by simply adding a commercial license, without reinstallation.