IEC 61804-2:2018 specifies FB (function blocks) by using the result of a harmonization work as regards several elements. a) The device model which defines the components of an IEC 61804-2 conformant device. b) Conceptual specifications of FBs for measurement, actuation and processing. This includes general rules for the essential features to support control, whilst avoiding details which stop innovation as well as specialization for different industrial sectors. c) The electronic device description (EDD) technology, which enables the integration of real product details using the tools of the engineering life cycle. This third edition cancels and replaces the second edition published in 2006 and integrates parts of IEC 61804-1 which was withdrawn in January 2013. This edition constitutes a technical revision. This edition includes the following significant technical changes with respect to the previous edition: a) added command communication mapping in Clause 8; b) moved and reword compatibility level definition from IEC 62804-1 to new Annex B and terms and definitions; c) added proxy concept in new Annex C.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 108<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 111<\/td>\n | English CONTENTS <\/td>\n<\/tr>\n | ||||||
| 114<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 116<\/td>\n | INTRODUCTION Figures Figure 1 \u2013 Position of IEC 61804-2 related to other standards and products <\/td>\n<\/tr>\n | ||||||
| 118<\/td>\n | 1 Scope 2 Normative references 3 Terms, definitions, abbreviated terms and conventions 3.1 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 127<\/td>\n | 3.2 Abbreviated terms <\/td>\n<\/tr>\n | ||||||
| 128<\/td>\n | 3.3 Conventions for lexical structures Tables Table 1 \u2013 Field attribute descriptions <\/td>\n<\/tr>\n | ||||||
| 129<\/td>\n | 4 General function block (FB) definition and EDD model 4.1 Device structure (device model) 4.1.1 Device model description Figure 2 \u2013 FB structure is derived out of the process (P&ID view) <\/td>\n<\/tr>\n | ||||||
| 130<\/td>\n | Figure 3 \u2013 FB structure may be distributed between devices (according to IEC 61499-1) <\/td>\n<\/tr>\n | ||||||
| 131<\/td>\n | Figure 4 \u2013 IEC 61804 FBs can be implemented in different devices Figure 5 \u2013 General components of devices <\/td>\n<\/tr>\n | ||||||
| 132<\/td>\n | 4.1.2 FB type Figure 6 \u2013 Block types of IEC 61804 (all parts) <\/td>\n<\/tr>\n | ||||||
| 133<\/td>\n | Figure 7 \u2013 IEC 61804 block overview (graphical representation not normative) <\/td>\n<\/tr>\n | ||||||
| 134<\/td>\n | 4.1.3 FB execution <\/td>\n<\/tr>\n | ||||||
| 135<\/td>\n | 4.1.4 Reference between IEC 61499 and IEC 61804 models 4.1.5 UML specification of the device model Table 2 \u2013 Equivalences between IEC 61804 and IEC 61499 model elements <\/td>\n<\/tr>\n | ||||||
| 136<\/td>\n | Figure 8 \u2013 UML class diagram of the device model <\/td>\n<\/tr>\n | ||||||
| 137<\/td>\n | 4.1.6 Classification of the algorithms <\/td>\n<\/tr>\n | ||||||
| 138<\/td>\n | 4.1.7 Algorithm description 4.1.8 Input and output variables and parameter definition Table 3 \u2013 Variables and parameter description template <\/td>\n<\/tr>\n | ||||||
| 139<\/td>\n | 4.1.9 Choice of variables and parameters 4.1.10 Mode, Status and Diagnosis 4.2 Block combinations 4.2.1 Measurement channel <\/td>\n<\/tr>\n | ||||||
| 140<\/td>\n | 4.2.2 Actuation channel Figure 9 \u2013 Measurement process signal flow Figure 10 \u2013 Actuation process signal flow <\/td>\n<\/tr>\n | ||||||
| 141<\/td>\n | 4.2.3 Application 4.3 EDD and EDDL model 4.3.1 Overview of EDD and EDDL Figure 11 \u2013 Application process signal flow <\/td>\n<\/tr>\n | ||||||
| 142<\/td>\n | 4.3.2 EDD architecture 4.3.3 Concepts of EDD 4.3.4 Principles of the EDD development process <\/td>\n<\/tr>\n | ||||||
| 143<\/td>\n | 4.3.5 Interrelations between the lexical structure and formal definitions Figure 12 \u2013 EDD generation process <\/td>\n<\/tr>\n | ||||||
| 144<\/td>\n | 4.3.6 Builtins 4.3.7 Profiles 5 Detailed block definition 5.1 General 5.2 Application FBs 5.2.1 Analog Input FB <\/td>\n<\/tr>\n | ||||||
| 145<\/td>\n | Figure 13 \u2013 Analog Input FB <\/td>\n<\/tr>\n | ||||||
| 146<\/td>\n | 5.2.2 Analog Output FB Figure 14 \u2013 Analog Output FB <\/td>\n<\/tr>\n | ||||||
| 147<\/td>\n | 5.2.3 Discrete Input FB <\/td>\n<\/tr>\n | ||||||
| 148<\/td>\n | Figure 15 \u2013 Discrete input FB <\/td>\n<\/tr>\n | ||||||
| 149<\/td>\n | 5.2.4 On\/Off Actuation FB Discrete Output FB Figure 16 \u2013 Discrete Output FB <\/td>\n<\/tr>\n | ||||||
| 150<\/td>\n | 5.2.5 Calculation FB <\/td>\n<\/tr>\n | ||||||
| 151<\/td>\n | 5.2.6 Control FB Figure 17 \u2013 Calculation FB <\/td>\n<\/tr>\n | ||||||
| 152<\/td>\n | Figure 18 \u2013 Control FB <\/td>\n<\/tr>\n | ||||||
| 153<\/td>\n | 5.3 Component FBs 5.4 Technology Block 5.4.1 Temperature Technology Block Figure 19 \u2013 Temperature Technology Block <\/td>\n<\/tr>\n | ||||||
| 155<\/td>\n | Table 4 \u2013 Example of temperature sensors of Sensor_Type <\/td>\n<\/tr>\n | ||||||
| 156<\/td>\n | 5.4.2 Pressure Technology Block <\/td>\n<\/tr>\n | ||||||
| 157<\/td>\n | Figure 20 \u2013 Pressure Technology Block <\/td>\n<\/tr>\n | ||||||
| 158<\/td>\n | 5.4.3 Modulating Actuation Technology Block <\/td>\n<\/tr>\n | ||||||
| 159<\/td>\n | Figure 21 \u2013 Modulating Actuation Technology Block <\/td>\n<\/tr>\n | ||||||
| 160<\/td>\n | 5.4.4 On\/Off Actuation Technology Block <\/td>\n<\/tr>\n | ||||||
| 161<\/td>\n | Figure 22 \u2013 On\/Off Actuation Technology Block <\/td>\n<\/tr>\n | ||||||
| 163<\/td>\n | 5.5 Device (Resource) Block 5.5.1 Identification 5.5.2 Device state Table 5 \u2013 Device status state table <\/td>\n<\/tr>\n | ||||||
| 164<\/td>\n | Figure 23 \u2013 Harel state chart <\/td>\n<\/tr>\n | ||||||
| 165<\/td>\n | 5.5.3 Message 5.5.4 Initialisation 5.6 Algorithms common to all blocks 5.6.1 Data Input\/Data Output status Table 6 \u2013 Device status transition table <\/td>\n<\/tr>\n | ||||||
| 166<\/td>\n | 5.6.2 Validity 5.6.3 Restart Initialisation 5.6.4 Fail-safe <\/td>\n<\/tr>\n | ||||||
| 167<\/td>\n | 5.6.5 Remote Cascade Initialisation 6 FB Environment 7 Mapping to System Management <\/td>\n<\/tr>\n | ||||||
| 168<\/td>\n | 8 Mapping to Communication Figure 24 \u2013 Application structure of ISO OSI Reference Model <\/td>\n<\/tr>\n | ||||||
| 169<\/td>\n | Figure 25 \u2013 Client\/Server relationship in terms of OSI Reference Model Figure 26 \u2013 Mapping of IEC 61804 FBs to APOs <\/td>\n<\/tr>\n | ||||||
| 171<\/td>\n | Annex A (informative)Parameter description Table A.1 \u2013 Parameter description <\/td>\n<\/tr>\n | ||||||
| 177<\/td>\n | Annex B (informative)Compatibility levels B.1 General Figure B.1 \u2013 Levels of functional device compatibility <\/td>\n<\/tr>\n | ||||||
| 178<\/td>\n | B.2 Compatibility B.3 Incompatibility Table B.1 \u2013 Functionality features <\/td>\n<\/tr>\n | ||||||
| 179<\/td>\n | B.4 Coexistence B.5 Interconnectability B.6 Interworkability B.7 Interoperability <\/td>\n<\/tr>\n | ||||||
| 180<\/td>\n | B.8 Interchangeability <\/td>\n<\/tr>\n | ||||||
| 181<\/td>\n | Annex C (informative)Proxy concept and its use in FB applications C.1 General proxy concept Figure C.1 \u2013 Proxy model class diagram <\/td>\n<\/tr>\n | ||||||
| 182<\/td>\n | C.2 Use of the proxy concept in FB applications Figure C.2 \u2013 Proxy integration in DCS <\/td>\n<\/tr>\n | ||||||
| 184<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Tracked Changes. Function blocks (FB) for process control and electronic device description language (EDDL) – Specification of FB concept<\/b><\/p>\n |