BS EN 61158-4-3:2012

$215.11

Industrial communication networks. Fieldbus specifications – Data-link layer protocol specification. Type 3 elements

Published By	Publication Date	Number of Pages
BSI	2012	174

Guaranteed Safe Checkout

Category: BSI

If you have any questions, feel free to reach out to our online customer service team by clicking on the bottom right corner. We’re here to assist you 24/7.
Email:[email protected]

Description

The data-link layer provides basic time-critical messaging communications between devices in an automation environment.

This protocol provides communication opportunities to a pre-selected “master” subset of data-link entities in a cyclic asynchronous manner, sequentially to each of those data-link entities. Other data-link entities communicate only as permitted and delegated by those master data-link entities.

For a given master, its communications with other data-link entities can be cyclic, or acyclic with prioritized access, or a combination of the two.

This protocol provides a means of sharing the available communication resources in a fair manner. There are provisions for time synchronization and for isochronous operation.

PDF Catalog

PDF Pages	PDF Title
6	CONTENTS
10	INTRODUCTION
12	1 Scope 1.1 General 1.2 Specifications 1.3 Procedures 1.4 Applicability
13	1.5 Conformance 2 Normative references 3 Terms, definitions, symbols and abbreviations 3.1 Reference model terms and definitions
15	3.2 Service convention terms and definitions
16	3.3 Common terms and definitions
17	Figures Figure 1 – Relationships of DLSAPs, DLSAP-addresses and group DL addresses
18	3.4 Additional Type 3 definitions
20	3.5 Common symbols and abbreviations
21	3.6 Type 3 symbols and abbreviations
25	4 Common DL protocol elements 4.1 Frame check sequence
26	Tables Table 1 – FCS length, polynomials and constants by Type 3 synchronous
27	5 Overview of the DL protocol 5.1 General
28	5.2 Overview of the medium access control and transmission protocol Table 2 – Characteristic features of the fieldbus data-link protocol
29	5.3 Transmission modes and DL entity
30	Figure 2 – Logical token-passing ring
34	5.4 Service assumed from the PhL Figure 3 – PhL data service for asynchronous transmission
37	5.5 Operational elements
40	Figure 4 – Idle time TID1 Figure 5 – Idle time TID2 (SDN, CS) Figure 6 – Idle time TID2 (MSRD)
41	Figure 7 – Slot time TSL1 Figure 8 – Slot time TSL2
46	Figure 9 – Slot time TSL1 Figure 10 – Slot time TSL2
52	5.6 Cycle and system reaction times Figure 11 – Token transfer period
53	Figure 12 – Message transfer period
55	6 General structure and encoding of DLPDUs, and related elements of procedure 6.1 DLPDU granularity
56	6.2 Length octet (LE, LEr) Figure 13 – UART character Figure 14 – Octet structure
57	6.3 Address octet Figure 15 – Length octet coding Figure 16 – Address octet coding
58	Figure 17 – DAE/SAE octet in the DLPDU Figure 18 – Address extension octet
59	6.4 Control octet (FC)
60	Figure 19 – FC octet coding for send/request DLPDUs Figure 20 – FC octet coding for acknowledgement or response DLPDUs
61	Table 3 – Transmission function code
63	6.5 DLPDU content error detection Figure 21 – FCS octet coding Table 4 – FCB, FCV in responder
64	6.6 DATA_UNIT 6.7 Error control procedures Figure 22 – Data field Figure 23 – Ident user data
65	7 DLPDU-specific structure, encoding and elements of procedure 7.1 DLPDUs of fixed length with no data field
66	Figure 24 – DLPDUs of fixed length with no data field
67	7.2 DLPDUs of fixed length with data field Figure 25 – DLPDUs of fixed length with no data field
68	Figure 26 – DLPDUs of fixed length with data field Figure 27 – DLPDUs of fixed length with data field
69	7.3 DLPDUs with variable data field length Figure 28 – DLPDUs with variable data field length
70	7.4 Token DLPDU Figure 29 – DLPDUs with variable data field length Figure 30 – Token DLPDU
71	7.5 ASP DLPDU 7.6 SYNCH DLPDU 7.7 Time Event (TE) DLPDU 7.8 Clock Value (CV) DLPDU Figure 31 – Token DLPDU
72	7.9 Transmission procedures Figure 32 – Send/request DLPDU of fixed length with no data Figure 33 – Token DLPDU and send/request DLPDU of fixed length with data
73	Figure 34 – Send/request DLPDU with variable data field length Figure 35 – Send/request DLPDU of fixed length with no data
74	Figure 36 – Token DLPDU and send/request DLPDU of fixed length with data Figure 37 – Send/request DLPDU with variable data field length
75	8 Other DLE elements of procedure 8.1 DL entity initialization 8.2 States of the media access control of the DL entity Table 5 – Operating parameters
76	Figure 38 – DL state-diagram
81	8.3 Clock synchronization protocol
82	Figure 39 – Overview of clock synchronization
83	Figure 40 – Time master state machine
84	Figure 41 – Time receiver state machine
85	Figure 42 – Clock synchronization
86	Annex A (normative) DL-Protocol state machines
87	Figure A.1 – Structuring of the protocol machines
88	Table A.1 – Assignment of state machines
89	Table A.2 – Data resource
93	Table A.3 – Primitives issued by DL User to FLC Table A.4 – Primitives issued by FLC to DL User
95	Table A.5 – Primitives issued by DL User to DLM
96	Table A.6 – Primitives issued by DLM to DL User Table A.7 – Parameters used with primitives exchanged between DL User and FLC
97	Table A.8 – Parameters used with primitives exchanged between DL User and DLM
98	Table A.9 – FLC/DLM state table
110	Table A.10 – FLC / DLM function table
117	Table A.11 – Primitives issued by DLM to MAC Table A.12 – Primitives issued by MAC to DLM Table A.13 – Parameters used with primitives exchanged between DLM and MAC
118	Table A.14 – Local MAC variables Table A.15 – MAC state table
139	Table A.16 – MAC function table
144	Figure A.2 – Structure of the SRU Machine
146	Table A.17 – Primitives issued by DLM to SRC Table A.18 – Primitives issued by SRC to DLM Table A.19 – Primitives issued by MAC to SRC
147	Table A.20 – Primitives issued by SRC to MAC Table A.21 – Parameters used with primitives exchanged between MAC and SRC Table A.22 – FC structure
148	Table A.23 – Local variables of SRC
149	Table A.24 – SRC state table
161	Table A.25 – SRC functions
162	Annex B (informative) Type 3 (synchronous): exemplary FCS implementations Figure B.1 – Example of FCS generation for Type 3 (synchronous) Figure B.2 – Example of FCS syndrome checking on reception for Type 3 (synchronous)
164	Annex C (informative) Type 3: Exemplary token procedure and message transfer periods
165	Figure C.1 – Derivation of the token holding time (TTH)
166	Figure C.2 – No usage of token holding time (TTH)
167	Figure C.3 – Usage of token holding time (TTH) for message transfer (equivalence between TTH of each Master station)
169	Figure C.4 – Usage of token holding time (TTH) in different working load situations
172	Bibliography

Additional information

Status	Withdrawn
Title	Industrial communication networks. Fieldbus specifications – Data-link layer protocol specification. Type 3 elements
Replaces	BS EN 61158-4-3:2008
Publisher	BSI
Committee	GEL/65/3
Pages	174
Publication Date	2012-06-30
Withdrawn Date	2014-11-30
Replaced By	BS EN 61158-4-3:2014
ISBN	978 0 580 71544 0
Standard Number	BS EN 61158-4-3:2012
Identical National Standard Of	EN 61158-4-3:2012, IEC 61158-4-3:2010
Descriptors	Communication networks, Computer networks, Data link layer (OSI), Industrial, Interfaces (data processing), Open systems interconnection, Data transmission, Automatic control systems, Bus networks, Fieldbus, Communication procedures, Process control
ICS Codes	35.110 - Networking

Preview PDF


PDF Format	Searchable	Printable	Preview Now

BS EN 61158-4-3:2012

PDF Catalog

Related products