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    IEC TS 61804-1-2003 Function blocks (FB) for process control - Part 1 Overview of system aspects《过程控制用功能块.第1部分 系统概述》.pdf

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    IEC TS 61804-1-2003 Function blocks (FB) for process control - Part 1 Overview of system aspects《过程控制用功能块.第1部分 系统概述》.pdf

    1、TECHNICAL SPECIFICATION IECTS 61804-1 First edition 2003-10 Function blocks (FB) for process control Part 1: Overview of system aspects Reference number IEC/TS 61804-1:2003(E)Publication numbering As from 1 January 1997 all IEC publications are issued with a designation in the 60000 series. For exam

    2、ple, IEC 34-1 is now referred to as IEC 60034-1. Consolidated editions The IEC is now publishing consolidated versions of its publications. For example, edition numbers 1.0, 1.1 and 1.2 refer, respectively, to the base publication, the base publication incorporating amendment 1 and the base publicat

    3、ion incorporating amendments 1 and 2. Further information on IEC publications The technical content of IEC publications is kept under constant review by the IEC, thus ensuring that the content reflects current technology. Information relating to this publication, including its validity, is available

    4、 in the IEC Catalogue of publications (see below) in addition to new editions, amendments and corrigenda. Information on the subjects under consideration and work in progress undertaken by the technical committee which has prepared this publication, as well as the list of publications issued, is als

    5、o available from the following: IEC Web Site (www.iec.ch) Catalogue of IEC publications The on-line catalogue on the IEC web site (www.iec.ch/searchpub) enables you to search by a variety of criteria including text searches, technical committees and date of publication. On-line information is also a

    6、vailable on recently issued publications, withdrawn and replaced publications, as well as corrigenda. IEC Just Published This summary of recently issued publications (www.iec.ch/online_news/ justpub) is also available by email. Please contact the Customer Service Centre (see below) for further infor

    7、mation. Customer Service Centre If you have any questions regarding this publication or need further assistance, please contact the Customer Service Centre: Email: custserviec.ch Tel: +41 22 919 02 11 Fax: +41 22 919 03 00 TECHNICAL SPECIFICATION IEC TS 61804-1 First edition 2003-10 Function blocks

    8、(FB) for process control Part 1: Overview of system aspects PRICE CODE IEC 2003 Copyright - all rights reserved No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from th

    9、e publisher. International Electrotechnical Commission, 3, rue de Varemb, PO Box 131, CH-1211 Geneva 20, Switzerland Telephone: +41 22 919 02 11 Telefax: +41 22 919 03 00 E-mail: inmailiec.ch Web: www.iec.ch XF For price, see current catalogue Commission Electrotechnique Internationale International

    10、 Electrotechnical Commission 2 TS 61804-1 IEC:2003(E) CONTENTS FOREWORD 5 INTRODUCTION 7 1 Scope 9 2 Normative references11 3 Terms, definitions and abbreviated terms11 3.1 General definitions.11 3.2 Definitions based on IA/IM-channel17 3.3 Abbreviated terms .18 4 Engineering requirements .18 4.1 Ge

    11、neral .18 4.2 Requirements for design phase .18 5 Compatibility levels.19 5.1 General .19 5.2 Incompatibility .21 5.3 Coexistence.21 5.4 Interconnectability .21 5.5 Interworkability 21 5.6 Interoperability.21 5.7 Interchangeability 21 6 Functional requirements .22 6.1 General .22 6.2 System (or chan

    12、nel or device) status .22 6.3 Validity index (VI) 24 6.4 Signal processing 24 6.5 Measurement information processing.24 6.6 Device diagnostics and test support.26 6.7 Local interfaces attachment.27 6.8 Device (and system and channel) management .27 7 FB application requirements .31 7.1 System overvi

    13、ew31 7.2 Overview of basic FB types33 7.3 FB requirements 35 7.4 Initial sets of FBs derived from I any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non- governmental organizations liaising with the IEC also par

    14、ticipate in this preparation. IEC collaborates closely with the International Organization for Standardization (ISO) in accordance with conditions determined by agreement between the two organizations. 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible,

    15、an international consensus of opinion on the relevant subjects since each technical committee has representation from all interested IEC National Committees. 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National Committees in that sense. While al

    16、l reasonable efforts are made to ensure that the technical content of IEC Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any misinterpretation by any end user. 4) In order to promote international uniformity, IEC National Committees undertake to ap

    17、ply IEC Publications transparently to the maximum extent possible in their national and regional publications. Any divergence between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter. 5) IEC provides no marking procedure to indicate

    18、its approval and cannot be rendered responsible for any equipment declared to be in conformity with an IEC Publication. 6) All users should ensure that they have the latest edition of this publication. 7) No liability shall attach to IEC or its directors, employees, servants or agents including indi

    19、vidual experts and members of its technical committees and IEC National Committees for any personal injury, property damage or other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and expenses arising out of the publication, use of, or reliance upon,

    20、 this IEC Publication or any other IEC Publications. 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is indispensable for the correct application of this publication. 9) Attention is drawn to the possibility that some of the elements of

    21、 this IEC Publication may be the subject of patent rights. IEC shall not be held responsible for identifying any or all such patent rights. The main task of IEC technical committees is to prepare International Standards. In exceptional circumstances, a technical committee may propose the publication

    22、 of a technical specification when the required support cannot be obtained for the publication of an International Standard, despite repeated efforts, or the subject is still under technical development or where, for any other reason, there is the future but no immediate possibility of an agreement

    23、on an International Standard. Technical specifications are subject to review within three years of publication to decide whether they can be transformed into International Standards. IEC 61804-1, which is a Technical Specification, has been prepared by subcommittee 65C: Digital communications, of IE

    24、C technical committee 65: Industrial-process measurement and control. This standard cancels and replaces IEC/PAS 61804-1 published in 2002. 6 TS 61804-1 IEC:2003(E) The text of this technical specification is based on the following documents: Enquiry draft Report on voting 65C/296/DTS 65C/310A/RVC F

    25、ull information on the voting for the approval of this technical specification can be found in the report on voting indicated in the above table. This publication has been drafted in accordance with the ISO/IEC Directives, Part 2. IEC 61804 consists of the following parts under the general title Fun

    26、ction blocks (FB) for process control Part 1: Overview of system aspects Part 2: Specification of FB concept and electronic device description language (EDDL) The committee has decided that the contents of this publication will remain unchanged until 2007. At this date, the publication will be trans

    27、formed into an International standard; reconfirmed; withdrawn; replaced by a revised edition, or amended.TS 61804-1 IEC:2003(E) 7 INTRODUCTION This Technical Specification is an end-user driven specification of the requirements of distributed process control systems based on Function Blocks (FB). Th

    28、is Technical Specification and its associated FB standard (IEC 61804-2) originate from the power-plant industrial sector. It is validated by applications in oil and gas, petrochemicals, pharmaceuticals and fine chemicals, pulp and paper, food and beverage, waste water treatment plants, steel milling

    29、 and others. There will be other general requirement standards and associated specifications for other industrial sectors. Present and future digital process control systems need to fulfil the following requirements: increase security and safety; reduce time to market; be supportable with available

    30、tools; reduce costs of development and support; minimize training costs; support integration of distributed control applications support integrated methodology for implementation; have increased maintainability, modifiability, agility, upgradeability, flexibility, ability to validate, accessibility,

    31、 availability, compatibility of support tools, multi-vendor device/ application compatibility, re-usability of knowledge and designs, re-usability of software components; be made up of digital devices that are compatible, interworkable, interconnectable interoperable and interchangeable with each ot

    32、her. Process control systems are required to fulfil these requirements in terms of their architecture and their operation during all the phases of the life cycle. The accepted basic concept for the design process control system is to describe all necessary implementation-specific functions with FB.

    33、A FB is an encapsulation of data and algorithms to provide a specific function, which can be self-standing. Process control systems can involve many instances of many different FBs operating in an environment providing common services (for example, communications) and interfaces to other applications. See Figure 1.


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