发表于:2001-12-24 12:14:00
11楼
OPC Data Exchange (DX) defines an industry-standard set of interfaces that provide interoperable data exchange and server-to-server communications across Ethernet networks. It is an extension of the existing OPC data access specification. The OPC DX standard extends data access to enable server-to-server data exchange during run-time, independent of the real-time application protocol that may be supported by the Ethernet TCP/IP networks. The OPC DX specification defines a set of interfaces that can be used to remotely configure and manage the connections maintained by each OPC DX server. Server-to-server communication between OPC DX servers is established via remote configuration and can be easily monitored for performance or diagnostic reasons. The OPC DX specification adds key extensions and enhancements that compliment existing systems using OPC data access.