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GB/T 33863.8-2017: OPC unified architecture -- Part 8: Data access
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OPC unified architecture -- Part 8: Data access
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GB/T 33863.8-2017
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Basic data | Standard ID | GB/T 33863.8-2017 (GB/T33863.8-2017) | | Description (Translated English) | OPC unified architecture -- Part 8: Data access | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | N10 | | Classification of International Standard | 25.040 | | Word Count Estimation | 18,166 | | Date of Issue | 2017-07-12 | | Date of Implementation | 2018-02-01 | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | GB/T 33863.8-2017: OPC unified architecture -- Part 8: Data access---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
OPC unified architecture - Part 8. Data access
ICS 25.040
N10
National Standards of People's Republic of China
OPC Unified Architecture Part 8. Data Access
(IEC 62541-8..2011, IDT)
2017-07-12 released
2018-02-01 Implementation
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
China National Standardization Management Committee released
Directory
Preface III
Introduction IV
1 Scope 1
2 normative reference document 1
3 terminology, definition, abbreviation 1
3.1 Terms and definitions 1
3.2 Abbreviations 2
4 Concept 2
5 model 3
5.1 Overview 3
5.2 Variable Type 3
5.2.1 DataItemType 3
5.2.2 AnalogItemType 4
5.2.3 DiscreteItemType 5
5.3 Address Space Model 7
5.4 Attributes of data items 7
5.5 Characteristic Data Type 8
5.5.1 Overview 8
5.5.2 Scope 8
5.5.3 EUInformation 8
6 Service Data Access Specific Usage 9
6.1 Overview 9
6.2 PercentDeadband 9
6.3 Data access status code 9
6.3.1 Overview 9
6.3.2 Operation Level Result Code 9
6.3.3 LimitBits 11
6.3.4 SemanticsChanged 11
Figure 1 OPC data items linked to automated data
Figure 2 Data item Data type Hierarchy 3
Figure 3 Representation of data items in address space 7
Table 1 DataItemType definitions 3
Table 2 AnalogItemType definitions 4
Table 3 DiscreteItemType definition 5
Table 4 TwoStateDiscreteType definitions 5
Table 5 MultiStateDiscreteType definition 6
Table 6 Scope Data Type Structure 8
Table 7 Scope definition 8
Table 8 EUInformation data type structure 8
Table 9 EUInformation definitions 9
Table 10 BAD Data Quality Operation Level Result Code 10
Table 11 UNCERTAIN Data Quality Operation Level Result Code 10
Table 12 Operational level of GOOD data quality Result code 11
Foreword
GB/T 33863 "OPC unified architecture" is divided into the following 13 parts.
- Part 1. Overview and concepts;
- Part 2. Safety model;
Part 3. Address space model;
- Part 4. Services;
- Part 5. Information model;
- Part 6. Mapping;
- Part 7. Regulations;
- Part 8. Data access;
- Part 9. Alerts and conditions;
- Part 10. Procedures;
- Part 11. Historical visit;
- Part 12. Discovery;
Part 13. Aggregation.
This part is part 8 of GB/T 33863.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This part uses the translation method equivalent to IEC 62541-8..2011 "OPC Unified Architecture Part 8. Data Access".
This part is made by the China Machinery Industry Federation.
This part is headed by the National Industrial Process Measurement Control and Automation Standardization Technical Committee (SAC/TC124).
This part of the drafting unit. Machinery Industry Instrument Integrated Technology and Economic Research Institute, Chongqing Sichuan Instrument Automation Co., Ltd., Shanghai from
Dynamic Instrument Co., Ltd., Beijing three-dimensional force control Technology Co., Ltd., Southwest University, China Tobacco Corporation staff training college.
This part of the main drafters. Wang Chengcheng, Ding Yan, Wang Deji, Wang Chunxi, Yao Jie, Zhang Qingjun, Liu Feng, Zhang Chunting, Yan Xiaofeng, Zhao Yan collar.
Introduction
This section provides specifications for OPC Unified Architecture application developers. This standard gives the analysis and design for the development of standard interfaces
The standard interface speeds up the application development done by multiple vendors and enables seamless connectivity of internal operations.
OPC Unified Architecture Part 8. Data Access
1 Scope
This part of GB/T 33863 is part of the overall OPC Unified Architecture (OPCUA) family of standards that defines data access
(DA) related information model. It specifically includes data access, additional features and other information and behavior required for node class and attribute variables
Type and additional description.
The complete address space model, including all node classes and attributes, is specified in GB/T 33863.3. Detect services and access data
Specified in GB/T 33863.4.
2 normative reference documents
The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article
Pieces. For undated references, the latest edition (including all modifications) applies to this document.
IEC /T R62541-1 OPC Unified Architecture Part 1. Overview and Concepts (OPCunfiedarchitecture-Part 1.
Overviewandconcepts)
IEC 62541-3 OPC Unified Architecture Part 3. Address Space Model (OPCunifiedarchitecture-Part 3.
AddressSpacemodel)
IEC 62541-4 OPC Unified Architecture Part 4. Services (OPCunifiedarchitecture-Part 4. Services)
IEC 62541-5 OPC Unified Architecture Part 5. Information Model (OPCunifiedarchitecture-Part 5.
Informationmodel)
3 terms, definitions, abbreviations
3.1 Terms and definitions
The following definitions and definitions as defined in IEC /T R62541-1, IEC 62541-3 and IEC 62541-4 apply to this document.
3.1.1
Data item dataItem
Link to any, real-time automated data, that is, data representing the current valid information.
Note. These data are for example.
--- device data (eg temperature sensor);
---calculate data;
--- status information (open/close, move);
- Dynamic change system data (eg stock quotes);
--- Diagnostic data.
3.1.2
Analog item analogItem
Represents a data item that continuously changes the physical quantity.
Note. Typical examples are temperature sensor and pressure sensor values. OPCUA defines a specific data type to identify the simulation item. Attribute description
The possible range of simulation items.
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