Main Data
Author: Wolfgang Mahnke, Stefan-Helmut Leitner, Matthias Damm
Title: OPC Unified Architecture
Publisher: Springer-Verlag
ISBN/ISSN: 9783540688990
Edition: 1
Price: CHF 73.90
Publication date: 01/01/2009
Category: Informatik, EDV Buch
Language: English
Technical Data
Pages: 339
Kopierschutz: DRM
Geräte: PC/MAC/eReader/Tablet
Formate: PDF
Table of contents
Motivation for This Book The OPC Foundation provides specifications for data exchange in industrial au- mation. There is a long history of COM/DCOM-based specifications, most pro- nent OPC Data Access (DA), OPC Alarms and Events (A&E), and OPC Historical Data Access (HDA), which are widely accepted in the industry and implemented by almost every system targeting industrial automation. Now the OPC Foundation has released a new generation of OPC specifications called OPC Unified Architecture (OPC UA). With OPC UA, the OPC Foundation fulfills a technology shift from the retiring COM/DCOM technology to a servi- oriented architecture providing data in a platform-independent manner via Web Services or its own optimized TCP-based protocol. OPC UA unifies the previous specifications into one single address space capable of dealing with current data, alarms and events and the history of current data as well as the event history. A remarkable enhancement of OPC UA is the Address Space Model by which v- dors can expose a rich and extensible information model using object-oriented techniques. OPC UA scales well from intelligent devices, controllers, DCS, and SCADA systems up to MES and ERP systems. It also scales well in its ability to provide information; on the lower end, a model similar to Classic OPC can be used, providing only base information, while at the upper end, highly sophisticated models can be described, providing a large amount of metadata including complex type hierarchies.
Table of contents
Foreword by Tom Burke5
Foreword by Jim Luth6
Motivation for This Book8
Who Should Read This Book?9
About the Authors11
Table of Contents14
1 Introduction21
1.1 OPC Foundation21
1.2 Classic OPC23
1.2.1 OPC Data Access24
1.2.2 OPC Alarm 24
1.2.3 OPC Historical Data Access26
1.2.4 Other OPC Interface Standards26
1.2.5 OPC XML-DA27
1.3 Motivation for OPC UA28
1.4 OPC UA Overview30
1.5 OPC UA Specifications31
1.6 OPC UA Software Layers33
1.7 Evolution Not Revolution35