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eLibrary > BS EN IEC 61158-4-3:2019 - TC Tracked Changes. Industrial communication networks. Fieldbus specifications - Data-link layer protocol specification. Type 3 elements >

BS EN IEC 61158-4-3:2019 - TC Tracked Changes. Industrial communication networks. Fieldbus specifications - Data-link layer protocol specification. Type 3 elements, 2020

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BS EN IEC 61158-4-3:2019 - TC Tracked Changes. Industrial communication networks. Fieldbus specifications - Data-link layer protocol specification. Type 3 elements, 2020

30395576_NEW.pdf [Go to Page]
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Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
CONTENTS
FOREWORD
INTRODUCTION
1 Scope [Go to Page]
1.1 General
1.2 Specifications
1.3 Procedures
1.4 Applicability
1.5 Conformance
2 Normative references
3 Terms, definitions, symbols and abbreviations [Go to Page]
3.1 Reference model terms and definitions
3.2 Service convention terms and definitions
3.3 Common terms and definitions
Figures [Go to Page]
Figure 1 – Relationships of DLSAPs, DLSAP-addresses and group DLaddresses
3.4 Additional Type 3 definitions
3.5 Common symbols and abbreviations [Go to Page]
3.5.1 Data units
3.5.2 Miscellaneous
3.6 Type 3 symbols and abbreviations
4 Common DLprotocol elements [Go to Page]
4.1 Frame check sequence [Go to Page]
4.1.1 General
4.1.2 At the sending DLE
Tables [Go to Page]
Table 1 – FCS length, polynomials and constants by Type 3 synchronous [Go to Page]
4.1.3 At the receiving DLE
5 Overview of the DLprotocol [Go to Page]
5.1 General
5.2 Overview of the medium access control and transmission protocol
Table 2 – Characteristic features of the fieldbus data-link protocol
5.3 Transmission modes and DLentity [Go to Page]
5.3.1 Overview
5.3.2 Token procedures
Figure 2 – Logical token-passing ring [Go to Page]
5.3.3 Send or send/request mode
5.4 Service assumed from the PhL [Go to Page]
5.4.1 Asynchronous transmission
5.4.2 Synchronous transmission
Figure 3 – PhL data service for asynchronous transmission
5.5 Operational elements [Go to Page]
5.5.1 Overview
5.5.2 Bit time tBIT
5.5.3 Asynchronous transmission
Figure 4 – Idle time TID1
Figure 5 – Idle time TID2 (SDN, CS)
Figure 6 – Idle time TID2 (MSRD)
Figure 7 – Slot time TSL1
Figure 8 – Slot time TSL2 [Go to Page]
5.5.4 Synchronous transmission
Figure 9 – Slot time TSL1
Figure 10 – Slot time TSL2 [Go to Page]
5.5.5 Timers and counters
5.6 Cycle and system reaction times [Go to Page]
5.6.1 Asynchronous transmission
Figure 11 – Token transfer period
Figure 12 – Message transfer period [Go to Page]
5.6.2 Synchronous transmission
6 General structure and encoding of DLPDUs, and related elements of procedure [Go to Page]
6.1 DLPDU granularity [Go to Page]
6.1.1 Asynchronous transmission – UART character
Figure 13 – UART character [Go to Page]
6.1.2 Synchronous transmission
6.2 Length octet (LE, LEr)
Figure 14 – Octet structure
Figure 15 – Length octet coding
6.3 Address octet [Go to Page]
6.3.1 Destination and source station address (DA and SA)
6.3.2 Address extension (EXT)
Figure 16 – Address octet coding [Go to Page]
6.3.3 Address check
Figure 17 – DAE/SAE octet in the DLPDU
Figure 18 – Address extension octet [Go to Page]
6.3.4 DLservice-access-point (DLSAP)
6.4 Control octet (FC) [Go to Page]
6.4.1 General
Figure 19 – FC octet coding for send/request DLPDUs
Figure 20 – FC octet coding for acknowledgement or response DLPDUs [Go to Page]
6.4.2 Frame count bit
Table 3 – Transmission function code
6.5 DLPDU content error detection [Go to Page]
6.5.1 Asynchronous transmission – frame checksum (FCS)
6.5.2 Synchronous transmission – frame check sequence (FCS)
Figure 21 – FCS octet coding
Table 4 – FCB, FCV in responder
6.6 DATA_UNIT [Go to Page]
6.6.1 General
6.6.2 Ident user data
Figure 22 – Data field
Figure 23 – Ident user data
6.7 Error control procedures [Go to Page]
6.7.1 Asynchronous transmission
6.7.2 Synchronous transmission
7 DLPDU-specific structure, encoding and elements of procedure [Go to Page]
7.1 DLPDUs of fixed length with no data field [Go to Page]
7.1.1 Asynchronous transmission
Figure 24 – DLPDUs of fixed length with no data field [Go to Page]
7.1.2 Synchronous transmission
7.2 DLPDUs of fixed length with data field [Go to Page]
7.2.1 Asynchronous transmission
Figure 25 – DLPDUs of fixed length with no data field [Go to Page]
7.2.2 Synchronous transmission
Figure 26 – DLPDUs of fixed length with data field
Figure 27 – DLPDUs of fixed length with data field
7.3 DLPDUs with variable data field length [Go to Page]
7.3.1 Asynchronous transmission
7.3.2 Synchronous transmission
Figure 28 – DLPDUs with variable data field length
7.4 Token DLPDU [Go to Page]
7.4.1 Asynchronous transmission
Figure 29 – DLPDUs with variable data field length
Figure 30 – Token DLPDU [Go to Page]
7.4.2 Synchronous transmission
7.5 ASP DLPDU
7.6 SYNCH DLPDU
7.7 Time Event (TE) DLPDU
7.8 Clock Value (CV) DLPDU
Figure 31 – Token DLPDU
7.9 Transmission procedures [Go to Page]
7.9.1 Asynchronous transmission
Figure 32 – Send/request DLPDU of fixed length with no data
Figure 33 – Token DLPDU and send/request DLPDU of fixed length with data [Go to Page]
7.9.2 Synchronous transmission
Figure 34 – Send/request DLPDU with variable data field length
Figure 35 – Send/request DLPDU of fixed length with no data
8 Other DLE elements of procedure [Go to Page]
8.1 DLentity initialization
Figure 36 – Token DLPDU and send/request DLPDU of fixed length with data
Figure 37 – Send/request DLPDU with variable data field length
8.2 States of the media access control of the DLentity [Go to Page]
8.2.1 General
Table 5 – Operating parameters [Go to Page]
8.2.2 Offline
Figure 38 – DLstate-diagram [Go to Page]
8.2.3 Passive_Idle
8.2.4 Listen_Token
8.2.5 Active_Idle
8.2.6 Claim_Token
8.2.7 Wait_TCT
8.2.8 Use_Token
8.2.9 Await_Data_Response
8.2.10 Check_Access_Time
8.2.11 Pass_Token
8.2.12 Check_Token_Pass
8.2.13 Await_Status_Response
8.3 Clock synchronization protocol [Go to Page]
8.3.1 Overview
8.3.2 State machine time master
Figure 39 – Overview of clock synchronization [Go to Page]
8.3.3 State machine time receiver
Figure 40 – Time master state machine
Figure 41 – Time receiver state machine
Figure 42 – Clock synchronization
Annex A (normative)DL-Protocol state machines [Go to Page]
A.1 Overall structure
A.2 Variation of state machines in different devices
Figure A.1 – Structuring of the protocol machines
A.3 DL Data Resource
Table A.1 – Assignment of state machines
Table A.2 – Data resource
A.4 FLC / DLM [Go to Page]
A.4.1 Primitive definitions
Table A.3 – Primitives issued by DLUser to FLC
Table A.4 – Primitives issued by FLC to DLUser
Table A.5 – Primitives issued by DLUser to DLM
Table A.6 – Primitives issued by DLM to DLUser
Table A.7 – Parameters used with primitives exchanged between DLUser and FLC
Table A.8 – Parameters used with primitives exchanged between DLUser and DLM [Go to Page]
A.4.2 State machine description
Table A.9 – FLC/DLM state table
Table A.10 – FLC / DLM function table
A.5 MAC [Go to Page]
A.5.1 Primitive definitions
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 [Go to Page]
A.5.2 State machine description
Table A.14 – Local MAC variables
Table A.15 – MAC state table
Table A.16 – MAC function table
A.6 SRU [Go to Page]
A.6.1 Overview
A.6.2 Character send SM(CTX)
A.6.3 Character receive SM (CRX)
Figure A.2 – Structure of the SRU Machine [Go to Page]
A.6.4 Timer-SM (TIM)
A.6.5 Primitive definition of SRC
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
Table A.20 – Primitives issued by SRC to MAC [Go to Page]
A.6.6 State machine description
Table A.21 – Parameters used with primitives exchanged between MAC and SRC
Table A.22 – FC structure
Table A.23 – Local variables of SRC
Table A.24 – SRC state table
Table A.25 – SRC functions
Annex B (informative)Type 3 (synchronous): exemplary FCS implementations [Go to Page]
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)
Annex C (informative)Type 3: Exemplary token procedureand message transfer periods [Go to Page]
C.1 Procedure of token passing
C.2 Examples for token passing procedure
Figure C.1 – Derivation of the token holding time (TTH)
Figure C.2 – No usage of token holding time (TTH)
Figure C.3 – Usage of token holding time (TTH) for message transfer (equivalence between TTH of each Master station)
Figure C.4 – Usage of token holding time (TTH) in different working load situations
C.3 Examples for message transfer periods – asynchronous transmission
Bibliography [Go to Page]

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