What's new in QuickOPC 2022.1: Difference between revisions
From OPC Labs Knowledge Base
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== Services == | == Services == | ||
* Added the {{Style=Identifier|IEasyUAClientConnectionControl}} service on the {{Style=Identifier|EasyUAClient}} component. It provides methods to control the OPC UA client connections to the server, and contains methods like {{Style=Identifier|LockConnection}} and {{Style=Identifier|UnlockConnection}}. When the connection is locked, the component will attempt to open it and keep open, and will not automatically disconnect from the server after the connection is unused for certain time. The service is also available via COM, as {{Style=Identifier|_EasyUAClientConnectionControl}}. | * Added the {{Style=Identifier|IEasyUAClientConnectionControl}} service on the {{Style=Identifier|EasyUAClient}} component. It provides methods to control the OPC UA client connections to the server, and contains methods like {{Style=Identifier|LockConnection}} and {{Style=Identifier|UnlockConnection}}. When the connection is locked, the component will attempt to open it and keep open, and will not automatically disconnect from the server after the connection is unused for certain time. The service is also available via COM, as {{Style=Identifier|_EasyUAClientConnectionControl}}. In .NET, it is also possible to use the {{Style=Identifier|DisposableLockConnection}} extension method, which works nicely with "using" statements in C# and VB.NET. | ||
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== Specialized Client Objects == | == Specialized Client Objects == | ||
== Other == | == Other == | ||
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= Component Refactorings = | = Component Refactorings = | ||
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Revision as of 14:46, 18 November 2021
See also: Versions; Previous version: What's new in QuickOPC 2021.3
Internal version number: 5.63
Key changes:
Component Improvements
Services
- Added the IEasyUAClientConnectionControl service on the EasyUAClient component. It provides methods to control the OPC UA client connections to the server, and contains methods like LockConnection and UnlockConnection. When the connection is locked, the component will attempt to open it and keep open, and will not automatically disconnect from the server after the connection is unused for certain time. The service is also available via COM, as _EasyUAClientConnectionControl. In .NET, it is also possible to use the DisposableLockConnection extension method, which works nicely with "using" statements in C# and VB.NET.
Component Refactorings
OPC UA
- The ServerConditionChanged event, previously available on the IEasyUAClient interface, has been moved to a new service, IEasyUAClientConnectionMonitoring, available from the EasyUAClient component. The service is also available via COM, as _EasyUAClientConnectionMonitoring.
Examples
OPC UA Client-Server
- Added a C# example showing how to lock and unlock connections to an OPC UA server, using the new IEasyUAClientConnectionControl service.
- Added a VBScript example showing how to connections to and disconnections from the OPC UA server, using the IEasyUAClientConnectionMonitoring service and the event pull mechanism.
