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PaxiSL Features
PaxiSL offer classes with methods for access to all Xi specified methods and and additional methods that simplify the server access.
PaXiSL handles the selection of the communication endpoints in a flexible way, based on the limited Silverlight communication capabilities.
The application sets preference declarations and PaxiSL selects the best fitting endpoint available in the server:
- Endpoint Name
The endpoint with this name is used if it exists in the server configuration
- Security yes/no
Determines is a secure or non-secure endpoint is selected in case the server has endpoints configured with both kinds of bindings.
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Classic OPC server access from Silverlight applications
DCOM based OPC server access is not directly possible from Silverlight applications.
The Express Interface is the solution - it uses WCF communication. Classic OPC servers are accessed through an Xi converter server. Such converters will be provided with classic OPC servers and are available from the OPC Foundation (for members) and from Advosol.
PaxiSL and XiTOCO offer a good solution, using WCF communication instead of DCOM.
The XiTOCO converter server is installed on the same machine as the Classic OPC servers. The communication from the .NET Compact Framework application uses WCF, eliminating the need for DCOM support in Silverlight.
PaxiSL and XiTOCO are available as royalty free licenses, making the solution cost effective for low and high volume applications. |
