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OPC UA Part 1 - Overview and Concepts 1.02 Specification(13)

发布时间:2021-06-06   来源:未知    
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OPC UA Specification Part1 OverView and Concepts

Release 1.02 5 OPC Unified Architecture, Part 1 existence of some condition, and (2) for which the Server sends Notifications to the Client when the condition is detected.

3.1.33 Variable

A Variable is a Node that contains a value.

3.1.34 View

A specific subset of the AddressSpace that is of interest to the Client.

3.2 Abbreviations and symbols

A&E Alarms and Events

API Application Programming Interface

COM Component Object Model

DA Data Access

DCS Distributed Control System

DX Data Exchange

HDA Historical Data Access

HMI Human-Machine Interface

LDAP Lightweight Directory Access Protocol

MES Manufacturing Execution System

OPC OPC Foundation (a non-profit industry association)

PLC Programmable Logic Controller

SCADA Supervisory Control And Data Acquisition

SOAP Simple Object Access Protocol

UA Unified Architecture

UDDI Universal Description, Discovery and Integration

UML Unified Modelling Language

WSDL Web Services Definition Language

XML Extensible Mark-up Language

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