The new tagline for 2011 is:
The OPC Foundation - The Interoperability Standard for Industrial Automation & Other Related Domains
OPC基金會在2011年給自己確立的最新口號是---工業自動化和相關領域間的互操作標準。
下面是對OPC的一些認知描述。
1、OPC isall about Open Productivity & Connectivity
OPC的所有都是關於開放性、生產效率和連接性。
2、OPC is a series of standards specifications.
OPC是一系列的標準和規格。
3、Current and emerging OPC Specifications include:
當前和新興的一些OPC規格包括：
1)OPC Data Access
The originals(OPC的起源功能)! Used to move real-time data from PLCs, DCSs, and other control devices to HMIs and other display clients. The Data Access 3 specification is now a Release Candidate. It leverages earlier versions while improving the browsing capabilities and incorporating XML-DA Schema.
OPC DA是OPC產生的原因。用以把PLC、DCS和其它控制設備的實時數據傳輸到HMI或其它顯示設備上。推薦使用最新發表的DA3規格。在改進瀏覽功能和納入XML-DA模式的同時，也平衡（不一定全部兼容？）了與之前版本的的關係。
2）OPC報警和事件
Provides alarm and event notifications on demand (in contrast to the continuous data flow of Data Access). These include process alarms, operator actions, informational messages, and tracking/auditing messages.
提供了需要的報警通知和事件通知（相比之下DA提供的是連續的數據流）。包括進程報警、操作員行爲、情報信息、跟蹤\審計信息等。
3）OPC Batch
Provides alarm and event notifications on demand (in contrast to the continuous data flow of Data Access). These include process alarms, operator actions, informational messages, and tracking/auditing messages.
這項規格把OPC哲學帶到了批處理工作這樣一個特殊的需求上。它爲當前的工作條件與設備能力之間架起了橋樑。
關於Batch Control的網站：http://www.batchcontrol.com/index.shtml
4）OPC Data eXchange
This specification takes us from client/server to server-to-server with communication across Ethernet fieldbus networks. This provides multi-vendor interoperability! And, oh by the way, adds remote configuration, diagnostic and monitoring/management services.
此規格通過網絡形式的以太網總線把我們從CS模式帶到SS模式。它提供了多個數據提供者的互操作功能！並且，添加了遠程配置、診斷和監視/管理的服務。
5）OPC Historical Data Access
Where OPC Data Access provides access to real-time, continually changing data, OPC Historical Data Access provides access to data already stored. From a simple serial data logging system to a complex SCADA system, historical archives can be retrieved in a uniform manner.
當OPC DA提供給我們對連續的實時的數據訪問功能的時候，OPC HDA 提供給我們對已經保存的數據進行訪問的功能。從一個簡單的串行數據日誌系統到複雜的SCADA系統，歷史存檔可以通過統一的方式進行查詢。
6）OPC Security
All the OPC servers provide information that is valuable to the enterprise and if improperly updated, could have significant consequences to plant processes. OPC Security specifies how to control client access to these servers in order to protect this sensitive information and to guard against unauthorized modification of process parameters.
所有OPC服務器都像企業提供有價值的信息，但是如果進行了不正確的數據更新，可能會對生產過程產生嚴重的後果。OPC安全規範設法去控制客戶端對服務器的訪問，保護敏感信息，防範對進程參數的未授權的修改。
7）OPC XML-DA
Provides flexible, consistent rules and formats for exposing plant floor data using XML, leveraging the work done by Microsoft and others on SOAP and Web Services.
提供靈活、一致的規則，用XML文件的格式把車間生產數據導出來，使用微軟工具或者其它工具但基於SOAP和Web Services技術所進行的工作可以方便的利用這些數據。
8）OPC Complex Data
A companion specification to Data Access and XML-DA that allows servers to expose and describe more complicated data types such as binary structures and XML documents.
DA和XML-DA的夥伴標準，允許服務器公開和描述諸如二進制結構體和XML文檔的更加複雜的數據類型。
9）OPC Commands
A Working Group has been formed to develop a new set of interfaces that allow OPC clients and servers to identify, send and monitor control commands which execute on a device.
這是一個工作組。用來開發一組新接口，從而允許OPC服務器和客戶端可以確認、發送和監視某臺設備正在運行的控制命令。
10）OPC Unified Architecher
A new set of specifications that are not based on Microsoft COM that will provide standards based cross-platform capability.
一個基於非COM技術的新的規則集，用以提供跨平臺的能力。
