BS EN 16603-70-32-2014

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BSEN16603 70 32 2014
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BSI Standards Publication BS EN 16603-70-32:2014 Space engineering — Test and operations procedure languageBS EN 16603-70-32:2014 BRITISH STANDARD National foreword This British Standard is the UK implementation of EN 16603-70-32:2014. The UK participation in its preparation was entrusted to Technical Committee ACE/68, Space systems and operations. A list of organizations represented on this committee can be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. © The British Standards Institution 2014. Published by BSI Standards Limited 2014 ISBN 978 0 580 84238 2 ICS 49.140 Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 September 2014. Amendments issued since publication Date Text affectedBS EN 16603-70-32:2014EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM EN 16603-70-32 September 2014 ICS 49.140 English version Space engineering - Test and operations procedure language Ingénierie spatiale - Language de procedure pour les essais et des operations Raumfahrttechnik - Sprache für Test- und Bedienprozeduren This European Standard was approved by CEN on 6 March 2014. CEN and CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN and CENELEC member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN and CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN and CENELEC members are the national standards bodies and national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels © 2014 CEN/CENELEC All rights of exploitation in any form and by any means reserved worldwide for CEN national Members and for CENELEC Members. Ref. No. EN 16603-70-32:2014 EBS EN 16603-70-32:2014 EN 16603-70-32:2014 (E) 2 Table of contents Foreword 5 Introduction 6 1 Scope . 7 2 Normative references . 8 3 Terms, definitions and abbreviated terms 9 3.1 Terms from other standards 9 3.2 Terms specific to the present standard . 9 3.3 Abbreviated terms. 11 4 Context of the procedure language 12 4.1 Introduction . 12 4.1.1 The space system . 12 4.1.2 Satellite testing 13 4.1.3 Mission operations 14 4.2 EGSE and mission control system (EMCS) 14 4.2.1 General . 14 4.2.2 Space system model . 14 5 Requirements to be satisfied by procedures . 18 5.1 Procedure structure 18 5.2 Language constructs 19 5.3 Language specification . 22 Annex A (informative) The PLUTO language 23 A.1 The structure of a procedure . 23 A.1.1 Procedure definition 23 A.1.2 Procedure declaration body 24 A.1.3 Procedure preconditions body . 24 A.1.4 Procedure main body 25 A.1.5 Procedure watchdog body . 25 A.1.6 Procedure confirmation body 26 BS EN 16603-70-32:2014 EN 16603-70-32:2014 (E) 3 A.1.7 Structure of a step . 26 A.2 The behaviour of a procedure . 28 A.2.1 Procedure execution flow 28 A.2.2 Step execution flow . 31 A.2.3 Activity execution flow . 33 A.2.4 Execution in parallel 34 A.2.5 Continuation following an “initiate and confirm” statement . 35 A.3 PLUTO language definition . 37 A.3.1 Conventions 37 A.3.2 Language case sensitivity . 38 A.3.3 Comments 38 A.3.4 Keywords 38 A.3.5 Identifiers 39 A.3.6 Constants 40 A.3.7 Types 43 A.3.8 System interfaces . 44 A.3.9 Language constructs . 45 A.4 Extended Backus-Naur form (EBNF) representation of PLUTO language constructs . 103 A.4.1 Conventions 103 A.4.2 PLUTO language constructs . 105 A.5 Index of PLUTO language constructs . 117 Annex B (informative) Engineering units . 120 B.1 Introduction . 120 B.2 Engineering units and symbols . 120 B.3 Engineering units railroad diagrams 126 B.4 EBNF representation of the engineering units . 129 Annex C (informative) Functions . 131 C.1 Introduction . 131 C.2 Mathematical functions . 131 C.3 Time functions 134 C.4 String functions . 135 Bibliography . 137 Figures Figure 4-1: Example of space system elements . 13 BS EN 16603-70-32:2014 EN 16603-70-32:2014 (E) 4 Figure 4-2: Example of a space system model . 16 Figure A-1 : Example of a procedure and its elements . 24 Figure A-2 : Execution states and transitions for a procedure . 31 Figure A-3 : Execution states and transitions for a step 33 Figure A-4 : Execution states and transitions for an activity 34 Figure A-5 : Confirmation status and continuation action combinations for main body “initiate and confirm” statements 36 Figure A-6 : Confirmation status and continuation action combinations for watchdog “initiate and confirm” statements 36 Figure A-7 : Example railroad diagram . 38 Tables Table A-1 : Predefined types 43 Table A-2 : Activity and step operation requests . 78 Table A-3 : Reporting data, variable and argument operation requests 78 Table A-4 : Predefined operators 97 Table A-5 : Activity and step property requests 101 Table A-6 : Reporting data, variable and argument property requests 102 Table A-7 : Event property requests . 102 Table A-8 : EBNF symbols and meanings 104 Table B-1 : Simple engineering units 121 Table B-2 : Acceptable multiple and submultiple of engineering unit 123 Table B-3 : Acceptable multiples of binary engineering units 124 Table B-4 : Standard compound engineering units . 124 Table C-1 : Mathematical functions 131 Table C-2 : Time functions . 134 Table C-3 : String functions 135 BS EN 16603-70-32:2014 EN 16603-70-32:2014 (E) 5 Foreword This document (EN 16603-70-32:2014) has been prepared by Technical Committee CEN/CLC/TC 5 “Space”, the secretariat of which is held by DIN. This standard (EN 16603-70-32:2014) originates from ECSS-E-ST-70-32C. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by March 2015, and conflicting national standards shall be withdrawn at the latest by March 2015. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association. This document has been developed to cover specifically space systems and has therefore precedence over any EN covering the same scope but with a wider domain of applicability (e.g. : aerospace). According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 16603-70-32:2014 EN 16603-70-32:2014 (E) 6 Introduction The procedure is the principal mechanism employed by the end-user to control the space system during pre-launch functional testing and post-launch in-orbit operations. This Standard identifies the requirements to be satisfied by any language used for the development of automated test and operation procedures. It also defines a reference language that fulfils these requirements. This language is called the “procedure language for users in test and operations (PLUTO)”. BS EN 16603-70-32:2014 EN 16603-70-32:2014 (E) 7 1 Scope This Standard specifies: • The capabilities of the language used for the definition of procedures for space system testing and operations. • The PLUTO language. Clause 4 defines the context in which procedures operate. Clause 5 contains the requirements for the procedure language. Annex A specifies the PLUTO language. This includes: • The “building blocks” that constitute procedures and the role that each of these building blocks plays in achieving the overall objectives of the procedure. • The dynamic aspects of procedures i.e. the execution logic of each building block and execution relationships between these blocks. • The syntax and semantics of the language itself. Annex B specifies the engineering units to be supported by the procedure language. Annex C specifies the mathematical, time and string functions to be supported by the procedure language. This standard may be tailored for the specific characteristics and constraints of a space project in conformance with ECSS-S-ST-00. BS EN 16603-70-32:2014 EN 16603-70-32:2014 (E) 8 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this ECSS Standard. For dated references, subsequent amendments to, or revisions of any of these publications, do not apply. However, parties to agreements based on this ECSS Standard are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references the latest edition of the publication referred to applies. EN reference Reference in text Title EN 16601-00-01 ECSS-S-ST-00-01 ECSS system – Glossary of terms ISO/IEC 14977 Information technology - Syntactic metalanguage – Extended BNF BS EN 16603-70-32:2014 EN 16603-70-32:2014 (E) 9 3 Terms, definitions and abbreviated terms 3.1 Terms from other standards For the purpose of this Standard, the terms and definitions from ECSS-S-ST-00-01 apply. 3.2 Terms specific to the present standard 3.2.1 activity space system monitoring and control function 3.2.2 compound parameter record comprised of any sequence of reporting data, arrays of reporting data and sub-records that are interpreted together EXAMPLE An anomaly report generated by the space segment comprising an anomaly report ID and a set of associated parameters. 3.2.3 confirmation body part of a procedure (or step) whose purpose is to assess whether or not the objective of the procedure (or step) has been achieved 3.2.4 continuation test language construct used to define how the execution of a procedure (or step) proceeds after a constituent step (or activity) has been executed 3.2.5 event occurrence of a condition or set of conditions that can arise during the course of a test session or a mission phase 3.2.6 initiation act of requesting the execution of a step or an activity 3.2.7 main body part of a procedure (or step) dedicated to achieving the objectives of the procedure (or step) BS EN 16603-70-32:2014 EN 16603-70-32:2014 (E) 10 3.2.8 parameter lowest level of elementary information that has a meaning for monitoring the space system 3.2.9 preconditions body part of a procedure dedicated to ensuring that the procedure only executes if or when pre-defined initial conditions are satisfied 3.2.10 procedure means for interacting with the space system in order to achieve a given objective or sequence of objectives 3.2.11 reporting data data used for assessing the functioning of the space system NOTE Reporting data can consist of a parameter (a simple type) or a compound parameter (a complex type). 3.2.12 space system model representation of the space system in terms of its decomposition into system elements, the activities that can be performed on these system elements, the reporting data that reflects the state of these system elements and the events that can be raised and handled for the control of these system elements, activities or reporting data 3.2.13 statement element of the procedure language which, together with other elements, implements the goal of a procedure (or step) 3.2.14 step component of a procedure that achieves a well-defined sub-goal 3.2.15 system element representation within the space system model of a functional element of the space system 3.2.16 watchdog body part of a procedure (or step) which manages contingency situations that can arise during the execution of the procedure (or step) 3.2.17 watchdog step component of the watchdog body dedicated to detecting the occurrence of a particular contingency condition and executing corrective actions BS EN 16603-70-32:2014 EN 16603-70-32:2014 (E) 11 3.3 Abbreviated terms For the purpose of this Standard, the abbreviated terms from ECSS-S-ST-00-01 and the following apply: Abbreviation Meaning AIV assembly, integration and verification EBNF extended Backus-Naur form EGSE electrical ground support equipment EMCS EGSE and mission control system FCP flight control procedure FOP flight operations plan MMI man-machine interface PLUTO procedure language for users in test and operations SCOE special check-out equipment SSM space system model BS EN 16603-70-32:2014 EN 16603-70-32:2014 (E) 12 4 Context of the procedure language 4.1 Introduction 4.1.1 The space system ECSS-S-ST-00 defines the overall space system as comprising a space segment, a ground segment and a launch service segment. An example of the elements of a space system is shown in Figure 4-1. The space system elements shown in this figure are operational at different times: • the electrical ground support equipment (EGSE) during the development phase; • the launch service segment during the pre-launch and launch phases; • the mission control and ground station systems during the mission operations phase. BS EN 16603-70-32:2014 EN 16603-70-32:2014 (E) 13 Ground Ground Station Mission Control OCS PCS MES EGSE SSCS SSCS SSC ME ME ME GCS Key: OCS: Operation control system SSC: Space segment control station PCS: Payload control system ME: Mission exploitation station MES: Mission exploitation system GCS: Ground communications subnet AIV: Assembly, integration and verification Space Spacecraft B PlatforPayloaOnboarsubneSpacecraft PlatforPayloaOnboard Subnet Space Subnet AIV Subnet Launch Vehicle A Launch Service Segment Launch Vehicle B Launch Vehicle C Launch Facility Pre-Launch Service Link Comms Link Figure 4-1: Example of space system elements 4.1.2 Satellite testing ECSS-E-ST-10, ECSS-E-ST-10-02 and ECSS-E-ST-10-03 define the requirements for space system engineering, verification and testing. This Sta
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