open ua统一标准指导文档(ice 62541)

【实例简介】
open ua统一标准指导文档，基于C语言的。包含了节点，函数，类型等基础说明。以及open ua服务器/客户端建立的一些基本实例。
Contents 1 Introduction I1 OPC Unified Architecture en62541 Features 1.3 Getting Hel 1. 4 Contributing 2 Building open 62541 2.1 Building the Examples 2.2 Building the library 2.3 Build Options 3 Tutorials 3.1 Working with Data Types 9 3.2 Building a Simple Server 3.3 Adding Variables to a Server .13 3.4 Connecting a Variable with a Physical Process .,,14 3.5 Working with Variable Types 3.6 Working with Objects and Object Types 19 3.7 Adding Methods to Objects 3.8 Building a Simple Client 4 Protocol 31 4.1 Establishing a Connection 4.2 Structure of a protocol message 5 Data Types 5.1 Builtin Types 5.2 Generic Type Handling 47 5.3 Array handling 49 5. 4 Random Number generator 49 5.5 Generated Data Type Definitions 49 5.6 Deprecated Data Types APl 94 6 Services 6.I D 97 6.2 Secure Channel service set 6.3 Session Service set 6.4 Node management Service Set 100 6.5 View Service Set .,...100 6.6 Query Service Set 10 6.7 Attribute Service Set 102 6.8 Method Service set 102 6.9 MonitoredItem service set 103 6.10 Subscription Service Set 104 7 Information Modelling l07 7.1 Base Node Attributes 107 7. 2 Variable Node 7.3 Variable TypeNode 7.4 MethodE 109 7.5 ObjectNode 110 7.6 ObjectTypeNode l10 7.7 Reference'TypeNode 110 7.8 Data TypeNode 7.9 View Node ...112 7.10 Nodestore Plugin API 112 8 Server I15 8.1 Server Configuration 8.2 Server Lifecycle 117 8.3 Repeated Callbacks 118 8.4 Reading and writing Node attributes 118 8.5B1 123 8.6 Discovery 124 8.7 Information model callbacks 8.8 Node addition and deletion 129 8.9 Reference Management l34 8.10 Utility Functions 134 8.11 Deprecated Server API 134 9 Client 137 9.1 Client Lifecycle 137 9.2 Client Lifecycle callback 137 9.3 Subscription Inactivity callback 137 9. 4 Client Configurat 138 9.5 Connect to a Server ,,,,,,,.,,,,,138 9.6 Discovery .139 9.7 Services 140 9.8 Asynchronous Services 143 10 Standard-Defined Constants 155 10.1 Attribute Id 10.2 Access Level masks 155 10.3 Write masks 156 10.4 Status Codes 156 10.5 Namespace Zero Nodelds 164 11 XML Nodeset Compiler 189 11.1 Getting started 189 11.2 Creating object instances 194 11.3 Combination of multiple nodesets .195 12 Internals 199 12.1 Networking Plugin API 199 12.2 Access Control Plugin API .202 12.3 Logging plugin APl CHAPTER 1 Introduction open62541(http://open62541.org)isanopensourceandfreeimplementationofOpcUa(opCunIfiedArchitec ture)written in the common subset of the C99 and C++98 languages. The library is usable with all major compilers and provides the necessary tools to impleinent dedicated OPC UA clients and servers, or to integrate OPC UA- based communication into existing applications. open62541 library is platform independent. All platform-specifie functionality is implemented via exchangeable plugins. Plugin implementations are provided for the major oper ating systems open62541 is licensed under the Mozilla Public License v2.0. So the open62541 library can be used in projects that are not open source. Only changes to the open62541 library itself need to published under the same license The plugins, as well as the server and client examples are in the public domain( Cco license). They can be reused under any license and changes do not have to be published 1.1 OPC Unified Architecture OPC UA is a protocol for industrial communication and has been standardized in the ieC 62541 series. At its core. opc ua defines an asynchronous protocol(built upon Tcp Http or Soap) thaT defines the exchange of messages via sessions,(on top of)secure communication channels, (on top of)raw connections a type system for protocol messages with a binary and XML-based encoding scheme, a meta-model for information modeling, that combines object-orientation with semantic triple-relations, and set of 37 standard services to interact with server-side information models. The signature of each service is defined as a request and response message in the protocol type system The standard itself can be purchased from IEC or downloaded for free on the website of the OPC Foundation at https://opcfoundation.org/(youneedtoregisterwithavalidemail The OPC Foundation drives the continuous improvement of the standard and the development of companion spec- ifications Companion specifications translate established concepts and reusable components from an application domain into OPC UA. They are created jointly with an established industry council or standardization body from the application domain. Furthermore, the OPC Foundation organizes events for the dissemination of the standard and provides the infrastructure and tools for compliance certification open62541 Documentation, Release 0.3. dev 1.2 open62541 Features open62541 implements the OPC Ua binary protocol stack as well as a client and server SDK. It currently supports the micro embedded Device server Profile plus some additional features Server binaries can be well under lookb in size, depending on the contained information nodel · Communication stack OPC UA binary protocol Chunking(splitting of large messages) Exchangeable network layer(plugin) for using custom networking APIs(e. g on embedded targets) Encrypted communication Asynchronous service requests in the client · Information model Support for all OPC UA node types(including method nodes) Support for adding and removing nodes and references also at runtime Support for inheritance and instantiation of object-and variable-types(custom constructor/destructor instantiation of child nodes Access control for individual nodes Subscriptions Support for subscriptions/monitoreditems for data change notifications Very low resource consumption for each monitored value(event-based server architecture) Code-Generation Support for generating data types from standard XML definitions Support for generating server-side information models(nodesets) from standard XMl definitions Features on the roadmap for the 0.3 release series but missing in the initial v0. 3 release are Encry pted communication in the client Events(notifications emitted by objects, data change notifications are implemented Event-loop(background tasks) in the client 1.3 Getting Help For discussion and help besides this documentation, you can reach the open6254 1 community via the mailing list · our Irc channel · the bugtracker 1.4 Contributing As an open source project, we invite new contributors to help improve open62541. Issue reports, bugfixes and new features are very welcome. The following are good starting points for new contributors Report bugs Improve the documentation 2 Chapter 1. Introduction open62541 Documentation, Release 0.3. dev Work on issues marked as easy hacks 1.4. Contributing open62541 Documentation, Release 0.3. dev Chapter 1. Introduction CHAPTER Building open62541 2.1 Building the Examples USing the GCC compiler, the following calls build the examples on linux p/path-tc/open62541*.# copy singie-file distr: but ion to the iocal directory cp /path-tc/examples/server_variable c. copy the example server gcc -std-c99 openc2541 c server variablec -o server 2.2 Building the Library 2.2.1 Building with CMake on Ubuntu or Debian sudc apt-get install git buzld-essential gcc pkg-contig cmake python python-six f enable addiLional eaLure sudc apt-get install cmake-curses-gui for the ccmake graphical interface dc apt-get install libmbedtls-dev for encryp sudc apt-get install check for unit tests sudc apt-get install python-sphinx graphviz t fcr documentation generation cd cpen62541 f select additional features make doc htmi documentation nake doc_pdr pdr ciocumeniaLion (requires IdTeX 5 open62541 Documentation, Release 0.3. dev 2.2.2 Building with CMake on Windows Here we explain the build process for Visual Studio(2013 or newer). To build with Ming w, just replace the compiler selection in the call to CMake Download and install Python2.7.x(python3.xworksaswell):https://python.org/downloads Install python-six with the pip package manager(pip install six) CmakE:http://www.cmake.org/cmake/resources/software.html MicrosoftVisualStudio:https://www.visualstudio.com/products/visual-studio-community-vs Download the open I sources(using git or as a zipfile from github) Open a command shell (cmd)and run cd <pat.h-tc>\openE254 mkdir build cd build <path-to>\cmake. exe .. - Visual Studio 14 2015 You can useuse cmake-gui for a graphical uiser-interface tc seiect features Then open buildopen62541 sln in Visual Studio 2015 and build as usual 2.2.3 Building on OS X · Download and install Xcodehttps://itunes.apple.com/us/app/xcode/id497799835?is=l&mt=12 He omebrew:http://brew.sh/ Pip(a package manager for python, may be preinstalled): sudo easy install pip Run the following in a shell brew install cmake f python 2/3 compatibility workarounds pip insTall sphinx #for documentation generdLicn pip install sphinx_rtdtheme documentation style brew install grapaviz fcr graphics in the documentation brew install check f for unit tests brew install userspace-rcu for multi-threading support Follow Ubuntu instructions without the apt-get commands as these are taken care of by the above packages 2.2.4 Building on Open BSD The procedure below works on Open BSD 5. 8 with gcc version 4.8.4, cmake version 3. 2.3 and Python version 2.7.10. Install a recent gcc, python and cmake kg_add gcc py Tell the system to actually use the recent gcc (it gets installed as egcc on OpenBSD) export cc=egcc Cxx=eg++ Now procede as described for Ubuntu/Debian 6 Chapter 2. Building open62541 【实例截图】
【核心代码】