OPC Unified Architecture Interoperability for Industrie 4 . 0 and the Internet of Things 4 . 0
نویسنده
چکیده
UA Model Specification Services are independent of the model ➞ At the lowest level are the abstract OPC-UA model and the services, including the whole address space model, different object and variable structures, alarms and more. ➞ The next level (Services Binding) is used to specify how the services are to be mapped to certain protocols. Currently mappings for TCP (UATCP) and for HTTP (OPC-UA WebServices) are available. In the future – once new technologies become established – further mappings can be specified without having to change the OPC-UA model and the services. The mappings are entirely based on standardized basic protocols, which already exist on all known platforms. ➞ The following levels are realizations for dedicated platforms and languages. The OPC Foundation itself offers three such realizations, namely for Java, .NET and AnsiC/C++. The last option contains a platform adaptation layer.
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