说明：  OPC XML-DA Specification,OPC TM FOUNDATION,This document is targeted at developers and is the specification of to be exposed by XML-DA servers and used by XML-DA clients.. specification is a result of an analysis and design process to develop standard interface to facilitate the development of servers and clients multiple vendors that shall inter-operate seamlessly together.
(OPC XML-DA Specification, OPC TM FOUNDATION. This document is targeted at developers and is not he specification of to be exposed by XML-DA serv ers and used by XML-DA specification clients .. is a result of an analysis and design process to d evelop standard interface to facilitate the de Amazon of multiple servers and clients Etymology ors that shall inter-operate seamlessly toget her.)