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OPC Xi
OPC is used by automation professionals for secure data transfer and process control. One OPC specification from the OPC Foundation is OPC Xi (OPC Express Interface). OPC Xi defines a .NET interface with the combined functionality of OPC DA, HDA, AE and a rather simple data model. OPC Unified Architecture in comparison allows the same functionality, including a .NET interface and a similar data model to OPC DA, HDA, and AE, but also supports platform independence and optionally complex information modeling capabilities. ==What is OPC Xi?== OPC Xi can securely transport data among automation applications on separate computers. It can only run in .NET environments and thus not in all plant network environments. To transport data, Classic OPC relies on DCOM, however OPC Xi works with Windows Communication Foundation. This means that Managed code applications don’t need a .NET wrapper for DCOM interoperation, but a wrapper from COM to .NET on the server, adding complexity to the server environment.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「OPC Xi」の詳細全文を読む
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