The OPC DA/AE/HDA Solution .NET offers a fast and easy access to the OPC Classic Client technology. Develop OPC DA, OPC AE and OPC HDA compliant Clients with C# targeting .NET 5.0, .NET Core 3.1 or .NET Standard 2.1. For backward compatibility we also provide .NET 4.8, .NET 4.7.2 and .NET 4.6.2 support.

The OPC DA/AE/HDA Solution .NET API defines classes which can be used to implement an OPC client capable to access OPC servers supporting different specifications with the same API. These classes manage client side state information; provide higher level abstractions for OPC tasks such as managing sessions and subscriptions or saving and restoring connection information for later use. The lower level API’s for OPC DA, OPC AE and OPC HDA defines classes which can be used to access OPC specification specific methods and properties.

We provide an online help for the current version: OPC DA/AE/HDA Client Solution NET Online Help

Examples can be found in the solution WorkshopClientSamples.sln.

TECHNOSOFTWARE provides different licenses depending on the component and on the ownership of a purchased license of the user of the sources. A single ZIP file or a single repository can contain multiple components where the sources have different license models. The valid license is in the header of each source file.

See LICENSE.md for more details.

The OPC DA/AE/HDA Client Solution .NET One-time fee for lifetime SCLA 1.0 license is available at

• OPC DA/AE/HDA Client Solution .NET

Support for the Solution under the GPL 3.0 or SCLA 1.0 is available here.

The Support Subscription is ideal for a corporation and a user of Technosoftware GmbH’s solutions on productive systems for which you want to get support for.

There are different levels availabe for purchase available here.