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XiOXS
Express Interface (OPC Xi) Exchange Server |
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The XiOXS Express Interface (OPC Xi) server aggregates multiple OPC DA or OPC Xi servers into the Xi server.
| The Exchange Server is: |
- a data aggregator
- a server-to-server data exchange handler
- an OPC Xi to OPC DA wrapper
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The XiOXS Exchange Server handles any number of OPC DA/Xi child servers and any number of items. Configured items are mirrored in the Xi server and can be read and written by the Xi clients.
Any number of child server items can be linked to one or multiple items in other child servers. Item value changes are written to all linked items.
The configuration application is easy to use and also handles testing and maintenance tasks.
Configuration
The Exchange Server configures itself at startup from an XML configuration file. This files can be created and modified with the supplied Configuration utility. |
Configuration and Diagnostic Utility
The configuration utility creates and modifies the XML configuration files. The OPC DA servers to be handled by the Exchange Server can be browsed and items and branches can be dragged to the Exchange server item tree. Complex configurations can be created in minutes.
XiOXS Exchange Server Features
- Aggregating server accessible as an OPC Xi server
- Can run as a Windows service
- High performance data exchange between servers
- Each item can be linked to multiple target servers
- All data types including arrays are supported
- Errors and information is logged in the Windows Event Log
- Test clients and simulation server provided
XiOXS Security
The OPC Xi specification was designed with communication security as a main consideration. Management and data read/write operations are handled through different endpoints, which can be separately configured with appropriate communication settings. Xi management methods associate handles with object identifiers and the read/write data methods only communicate handles with the data. This makes data hard to interpret by an eavesdropper even if it's communicated without encryption.
The XiOXS converter requires the management endpoint to be configured for secure communication. This ensures good security without reducing the data exchange performance.
XiOXS as a Tunneler Solution
XiOXS used in combination with the OXS Exchange Server converts OPC DA to OPC Xi and back to OPC DA. Remote OPC DA servers can be accessed through an OPC Xi connection.
The OPC Xi communication has significant advantages over Tunneler products:
- The communication can be configured to a security level appropriate for the application
- TCP or HTTP communication can be chosen.
TCP communication offers high performance but requires firewall configuration.
HTTP communication on standard ports works without configuration efforts.
- The standardized OPC Xi communication interface is used instead of a proprietary Tunneler interface.
Either side converter can easily be replaced with any OPC Xi client respectively server.
Related Products
The Advosol OXS Exchange Server offers the same functionality but works as OPC DA or XML DA server.
| Requirements |
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Windows XP or newer |
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.NET 3.5 or 4.0 |
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PNRP for Xi server discovery (optional) | | 
