IEC 61158-4-2:2019 specifies procedures for the timely transfer of data and control information from one data-link user entity to a peer user entity, and among the data-link entities forming the distributed data-link service provider and the structure of the fieldbus DLPDUs used for the transfer of data and control information by the protocol of this standard, and their representation as physical interface data units. This fourth edition cancels and replaces the third edition published in 2014 and constitutes a technical revision. lt;br /gt;This edition includes the following significant technical changes with respect to the previous edition: lt;br /gt;•clarifications of ControlNet object in 7.2; lt;br /gt;•extensions and clarifications of TCP/IP interface object in 7.5; lt;br /gt;•extensions and clarifications of Ethernet Link object in 7.6; lt;br /gt;•clarifications of DeviceNet object in 7.7; lt;br /gt;•extensions and clarifications of CCO object in 7.8; lt;br /gt;•extensions and clarifications of DLR object in 7.9; lt;br /gt;•extensions and clarifications of Port object in 7.11; lt;br /gt;•addition of PRP/HSR Protocol and PRP/HSR Nodes Table objects in 7.12 and 7.13; lt;br /gt;•extensions and clarifications of DLR protocol in Clause 10; lt;br /gt;•addition of PRP/HSR protocol mapping in Clause 11; lt;br /gt;•update of indicator behaviour in A.2.2 and A.2.4; lt;br /gt;•miscellaneous editorial corrections.

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PDF Pages	PDF Title
2	National foreword
5	Annex ZA(normative)Normative references to international publicationswith their corresponding European publications
7	CONTENTS
20	FOREWORD
22	INTRODUCTION
24	1 Scope 1.1 General 1.2 Specifications 1.3 Procedures
25	1.4 Applicability 1.5 Conformance 2 Normative references
27	3 Terms, definitions, symbols, abbreviated terms and conventions 3.1 Reference model terms and definitions
29	3.2 Service convention terms and definitions 3.3 Common terms and definitions
30	3.4 Additional Type 2 definitions
38	3.5 Type 2 symbols and abbreviated terms
39	3.6 Conventions for station management objects Tables Table 1 – Format of attribute tables
40	4 Overview of the data-link protocol 4.1 General 4.1.1 DLL architecture Table 2 – Data-link layer components
41	4.1.2 Access control machine (ACM) and scheduling support functions Figures Figure 1 – Data-link layer internal architecture
42	4.1.3 Connection-mode, connectionless-mode data transfer and DL service 4.2 Services provided by the DL 4.2.1 Overview 4.2.2 QoS
43	4.3 Structure and definition of DLaddresses 4.3.1 General 4.3.2 MAC ID address Figure 2 – Relationships of DLSAPs, DLSAPaddresses, and group DLaddresses
44	4.3.3 Generic tag address 4.3.4 Fixed tag address Figure 3 – Basic structure of a MAC ID address Figure 4 – Basic structure of a generic tag address Figure 5 – Basic structure of a fixed tag address Table 3 – MAC ID addresses allocation
45	4.4 Services assumed from the PhL 4.4.1 General requirements Table 4 – Fixed tag service definitions
46	4.4.2 Data encoding rules 4.4.3 DLL to PhL interface Figure 6 – M_symbols and Manchester encoding at 5 MHz Table 5 – Data encoding rules
47	Table 6 – M Data symbols Table 7 – Truth table for ph_status_indication
48	4.5 Functional classes 5 General structure and encoding of PhIDUs and DLPDUs and related elements of procedure 5.1 Overview 5.2 Media access procedure
49	Figure 7 – NUT structure
50	Figure 8 – Media access during scheduled time
51	Figure 9 – Media access during unscheduled time
52	5.3 DLPDU structure and encoding 5.3.1 General 5.3.2 DLPDU components 5.3.3 Preamble 5.3.4 Start and end delimiters 5.3.5 DLPDU octets and ordering Figure 10 – DLPDU format
53	5.3.6 Source MAC ID 5.3.7 Lpackets field 5.3.8 Frame check sequence (FCS)
54	Table 8 – FCS length, polynomials and constants
56	5.3.9 Null DLPDU 5.3.10 Abort DLPDU 5.4 Lpacket components 5.4.1 General Lpacket structure 5.4.2 Size Figure 11 – Aborting a DLPDU during transmission Figure 12 – Lpacket format
57	5.4.3 Control 5.4.4 Generic tag Lpackets Figure 13 – Generic tag Lpacket format
58	5.4.5 Fixed tag Lpackets 5.5 DLPDU procedures 5.5.1 General Figure 14 – Fixed tag Lpacket format
59	5.5.2 Sending scheduled DLPDUs 5.5.3 Sending unscheduled DLPDUs 5.5.4 Receiving DLPDUs 5.6 Summary of DLL support services and objects
60	Table 9 – DLL support services and objects
61	6 Specific DLPDU structure, encoding and procedures 6.1 Modeling language 6.1.1 State machine description
62	6.1.2 Use of DLL- prefix 6.1.3 Data types
63	6.2 DLS user services 6.2.1 General 6.2.2 Connected mode and connectionless mode transfer service Table 10 – Elementary data types
65	6.2.3 Queue maintenance service 6.2.4 Tag filter service
66	6.2.5 Link synchronization service 6.2.6 Synchronized parameter change service
67	6.2.7 Event reports service
68	6.2.8 Bad FCS service 6.2.9 Current moderator service Table 11 – DLL events
69	6.2.10 Power up and online services 6.2.11 Enable moderator service 6.2.12 Listen only service 6.3 Generic tag Lpacket 6.3.1 General
70	6.3.2 Structure of the generic-tag Lpacket 6.3.3 Sending and receiving the generic-tag Lpacket 6.4 Moderator Lpacket 6.4.1 General 6.4.2 Structure of the moderator Lpacket
71	6.4.3 Sending and receiving the moderator Lpacket
72	6.5 Time distribution Lpacket 6.5.1 General 6.5.2 Structure of the time distribution Lpacket
73	Figure 15 – Goodness parameter of TimeDist_Lpacket Table 12 – Time distribution priority
74	6.5.3 Sending and receiving the time distribution Lpacket 6.6 UCMM Lpacket 6.6.1 General 6.6.2 Structure of the UCMM Lpacket 6.6.3 Sending and receiving the UCMM Lpacket 6.7 Keeper UCMM Lpacket 6.7.1 General
75	6.7.2 Structure of the Keeper UCMM Lpacket 6.7.3 Sending and receiving the Keeper UCMM Lpacket 6.8 TUI Lpacket 6.8.1 General 6.8.2 Structure of the TUI Lpacket
76	6.8.3 Sending and receiving the TUI Lpacket 6.9 Link parameters Lpacket and tMinus Lpacket 6.9.1 General Table 13 – Format of the TUI Lpacket
77	6.9.2 Structure of link parameters and tMinus Lpackets 6.9.3 Sending and receiving the tMinus and Link parameters Lpackets
78	6.10 I’m-alive Lpacket 6.10.1 General 6.10.2 Structure or the I’m-alive Lpacket 6.10.3 Sending and receiving I’m Alive 6.10.4 I’m alive state processing
79	6.11 Ping Lpackets 6.11.1 General Figure 16 – Example I’m alive processing algorithm
80	6.11.2 Structure of the ping Lpackets 6.11.3 Sending and receiving the ping Lpackets
81	6.12 WAMI Lpacket 6.12.1 General 6.12.2 Structure of the WAMI Lpacket 6.12.3 Sending and receiving the WAMI Lpacket 6.13 Debug Lpacket
82	6.14 IP Lpacket 6.15 Ethernet Lpacket 7 Objects for station management 7.1 General
84	7.2 ControlNet™ object 7.2.1 Overview 7.2.2 Class attributes 7.2.3 Instance attributes Table 14 – ControlNet object class attributes
85	Table 15 – ControlNet object instance attributes
89	Table 16 – TUI status flag bits
90	Table 17 – Mac_ver bits Table 18 – Channel state bits
92	7.2.4 Common services Table 19 – ControlNet object common services
93	7.2.5 Class specific services Table 20 – ControlNet object class specific services
94	7.2.6 Behavior 7.2.7 Module status indicator
95	7.3 Keeper object 7.3.1 Overview 7.3.2 Revision history 7.3.3 Class attributes 7.3.4 Instance attributes Table 21 – Keeper object revision history Table 22 – Keeper object class attributes
96	Table 23 – Keeper object instance attributes
99	Table 24 – Keeper operating state definitions Table 25 – Port status flag bit definitions
100	Table 26 – TUI status flag bits
101	Figure 17 – Keeper CRC algorithm
102	Table 27 – Keeper attributes
103	7.3.5 Common services Table 28 – Memory requirements (in octets) for the Keeper attributes Table 29 – Keeper object common services
104	7.3.6 Class specific services
105	Table 30 – Keeper object class specific services
106	Table 31 – Service error codes
110	7.3.7 Service error codes Table 32 – Wire order format of the TUI Lpacket
111	7.3.8 Behavior Table 33 – Service error codes
112	7.3.9 Miscellaneous notes Table 34 – Keeper object operating states
113	7.3.10 Keeper power up sequence
114	Figure 18 – Keeper object power-up state diagram
115	Figure 19 – Keeper object operating state diagram
116	Table 35 – Keeper object state event matrix
118	7.4 Scheduling object 7.4.1 Overview Figure 20 – Synchronized network change processing
119	7.4.2 Class attributes 7.4.3 Instance attributes Table 36 – Scheduling object class attributes
120	7.4.4 Common services Table 37 – Scheduling object instance attributes Table 38 – Scheduling object common services
121	Table 39 – Status error descriptions for Create
122	7.4.5 Class specific services Table 40 – Status error descriptions for Delete and Kick_Timer Table 41 – Scheduling object class specific services
124	Table 42 – Status error descriptions for Read
125	Table 43 – Status error descriptions for Conditional_Write Table 44 – Status error descriptions for Forced_Write
126	Table 45 – Status error descriptions for Change_Start
127	Table 46 – Status error descriptions for Break_Connections Table 47 – Status error descriptions for Change_Complete
128	7.4.6 Typical scheduling session Table 48 – Status error descriptions for Restart_Connections
129	7.5 TCP/IP Interface object 7.5.1 Overview 7.5.2 Revision history Table 49 – Revision history
130	7.5.3 Class attributes 7.5.4 Instance attributes Table 50 – TCP/IP Interface object class attributes
131	Table 51 – TCP/IP Interface object instance attributes
134	Table 52 – Status bits
135	Table 53 – Configuration capability bits
136	Table 54 – Configuration control bits
137	Table 55 – Example path
138	Table 56 – Interface configuration components
140	Table 57 – Alloc control values
141	Table 58 – AcdActivity values Table 59 – ArpPdu – ARP Response PDU in binary format
142	Table 60 – Admin Capability member bit definitions
143	Table 61 – Admin Capability member bit definitions
144	7.5.5 Common services Table 62 – TCP/IP Interface object common services
145	Table 63 – Get_Attributes_All reply format
146	7.5.6 Class specific services Table 64 – TCP/IP Interface object class specific services Table 65 – Set_Port_Admin_State service request parameters
147	7.5.7 Behavior Table 66 – Set_Protocol_Admin_State service request parameters Table 67 – Class specific error codes
148	Figure 21 – State transition diagram for TCP/IP Interface object
149	7.5.8 Address Conflict Detection (ACD) Figure 22 – State transition diagram for TCP/IP Interface object
151	Figure 23 – ACD Behavior
155	7.6 Ethernet link object 7.6.1 Overview 7.6.2 Revision history 7.6.3 Class attributes Table 68 – Ethernet link object revision history
156	7.6.4 Instance attributes Table 69 – Ethernet link object class attributes Table 70 – Ethernet link object instance attributes
162	Table 71 – Interface flags bits
163	Table 72 – Control bits
164	Table 73 – Interface type Table 74 – Interface state Table 75 – Admin state
165	Table 76 – Capability Bits
166	7.6.5 Common services Table 77 – Ethernet Link object common services
167	Table 78 – Get_Attributes_All reply format
168	7.6.6 Class specific services 7.6.7 Behavior Table 79 – Ethernet Link object class specific services
169	7.7 DeviceNet™ object 7.7.1 Overview 7.7.2 Revision history Figure 24 – State transition diagram for Ethernet Link object
170	7.7.3 Class attributes 7.7.4 Instance attributes Table 80 – DeviceNet object revision history Table 81 – DeviceNet object class attributes
171	Table 82 – DeviceNet object instance attributes
173	Table 83 – Bit rate attribute values
174	Table 84 – BOI attribute values
176	Table 85 – Diagnostic counters bit description
177	7.7.5 Common services Table 86 – DeviceNet object common services Table 87 – Reset service parameter Table 88 – Reset service parameter values
178	7.7.6 Class specific services 7.8 Connection configuration object (CCO) 7.8.1 Overview Table 89 – DeviceNet object class specific services
179	7.8.2 Revision history 7.8.3 Class attributes Table 90 – Connection configuration object revision history Table 91 – Connection configuration object class attributes
181	7.8.4 Instance attributes Table 92 – Format number values Table 93 – Connection configuration object instance attributes
185	Table 94 – Originator connection status values
186	Table 95 – Target connection status values Table 96 – Connection flags
188	Table 97 – I/O mapping formats
190	7.8.5 Connection Configuration Object change control 7.8.6 Common services Table 98 – Services valid during a change operation
191	Table 99 – Connection configuration object common services Table 100 – Get_Attributes_All Response – class level
192	Table 101 – Get_Attributes_All response – instance level
193	Table 102 – Set_Attributes_All error codes
194	Table 103 – Set_Attributes_All request
195	Table 104 – Create request parameters
196	Table 105 – Create error codes Table 106 – Delete error codes
197	7.8.7 Class specific services Table 107 – Restore error codes Table 108 – Connection configuration object class specific services
198	Table 109 – Change_Start error codes Table 110 – Get_Status service parameter
199	Table 111 – Get_Status service response Table 112 – Get_Status service error codes Table 113 – Change_Complete service parameter
200	7.8.8 Behavior Table 114 – Change_Complete service error codes Table 115 – Audit_Changes service parameter Table 116 – Audit_Changes service error codes
201	7.9 DLR object 7.9.1 Overview 7.9.2 Revision history Figure 25 – Connection configuration object edit flowchart
202	7.9.3 Class attributes 7.9.4 Instance attributes Table 117 – Revision history Table 118 – DLR object class attributes
203	Table 119 – DLR object instance attributes
206	Table 120 – Network Status values Table 121 – Ring Supervisor Status values
210	Table 122 – Capability flags
212	Table 123 – Redundant Gateway Status values
213	7.9.5 Common services Table 124 – DLR object common services
214	Table 125 – Get_Attributes_All Response – Object Revision 1, non supervisor device
215	Table 126 – Get_Attributes_All Response – Object Revision 1, supervisor-capable device Table 127 – Get_Attributes_All Response – Object Revision 2, non supervisor device
216	Table 128 – Get_Attributes_All Response – All other cases
217	7.9.6 Class specific services Table 129 – DLR object class specific services
218	7.10 QoS object 7.10.1 Overview 7.10.2 Revision History 7.10.3 Class attributes Table 130 – QoS object revision history
219	7.10.4 Instance Attributes Table 131 – QoS object class attributes Table 132 – QoS object instance attributes
220	7.10.5 Common services Table 133 – Default DCSP values and usages
221	7.10.6 Get_Attributes_All response (class level) 7.11 Port object 7.11.1 Overview 7.11.2 Revision History Table 134 – QoS object common services
222	7.11.3 Class attributes 7.11.4 Instance attributes Table 135 – Port object revision history Table 136 – Port object class attributes
223	Table 137 – Port object instance attributes
225	Table 138 – Port Type and associated Link Object classes and Port Type Name values
227	Table 139 – Port Routing Capabilities attribute bit definitions
228	7.11.5 Common services Table 140 – Port object common services
229	7.12 PRP/HSR Protocol object 7.12.1 Overview 7.12.2 Revision history Table 141 – Get_Attributes_All response– class level Table 142 – Get_Attributes_All response– instance level
230	7.12.3 Class attributes 7.12.4 Instance attributes Table 143 – Revision history Table 144 – Class attributes
231	Table 145 – Instance attributes
234	Table 146 – Node Type
235	Table 147 – Switching Node Table 148 – HSR Mode
236	Table 149 – RedBox ID
237	7.12.5 Common Services Table 150 – PRP/HSR Protocol object common services
238	Table 151 – Get_Attributes_All response
239	7.13 PRP/HSR Nodes Table object 7.13.1 Overview 7.13.2 Revision history 7.13.3 Class attributes 7.13.4 Instance attributes Table 152 – Revision history Table 153 – Class attributes
240	Table 154 – Instance attributes
241	Table 155 – Remote Node Type
242	7.13.5 Common services 8 Other DLE elements of procedure 8.1 Network attachment monitor (NAM) 8.1.1 General Table 156 – PRP/HSR Nodes Tables object common services Table 157 – Get_Attributes_All response
243	8.1.2 Default parameters Figure 26 – NAM state machine Table 158 – NAM states
244	8.1.3 Auto-addressing 8.1.4 Valid MAC IDs 8.1.5 State machine description Table 159 – Default link parameters
250	8.2 Calculating link parameters 8.2.1 Link parameters
251	8.2.2 Conditions affecting link parameters 8.2.3 Moderator change 8.2.4 NUT timing Table 160 – PhL timing characteristics
253	8.2.5 Slot timing 8.2.6 Blanking
254	8.2.7 Example implementation
258	9 Detailed specification of DL components 9.1 General 9.2 Access control machine (ACM)
278	9.3 TxLLC
282	9.4 RxLLC
286	9.5 Transmit machine (TxM)
290	9.6 Receive machine (RxM)
296	9.7 Serializer
298	9.8 Deserializer 9.8.1 Octet construction 9.8.2 FCS checking
299	9.8.3 End of DLPDU processing 9.9 DLL management
301	10 Device Level Ring (DLR) protocol 10.1 General 10.2 Support for Multiple DLR Ring Pairs
302	10.3 Supported topologies Figure 27 – Devices with Multiple DLR Ring Pairs
303	10.4 Overview of DLR operation 10.4.1 Normal operation Figure 28 – DLR rings connected to switches
304	Figure 29 – Normal operation of a DLR network Figure 30 – Beacon and Announce frames
305	10.4.2 Link failures Figure 31 – Link failure
306	10.5 Classes of DLR implementation Figure 32 – Network reconfiguration after link failure
307	10.6 DLR behavior 10.6.1 DLR variables 10.6.2 Ring supervisor Table 161 – DLR variables
310	10.6.3 Ring node
311	10.6.4 Sign on process
312	10.6.5 Neighbor check process 10.7 Implementation requirements 10.7.1 Embedded switch requirements and recommendations Figure 33 – Neighbor Check process
313	10.7.2 DLR implementation requirements Table 162 – DLR Link speed and duplex requirements
314	10.7.3 IEC 61588 and CP 2/2.1 considerations 10.7.4 IEEE 802.1D/IEEE 802.1Q STP/RSTP/MSTP considerations 10.8 Using non-DLR nodes in the ring network 10.8.1 General considerations
315	10.8.2 Non-DLR end devices 10.8.3 Non-DLR switches
316	Figure 34 – Unsupported topology – example 1 Figure 35 – Unsupported topology – example 2
318	10.9 Redundant gateway devices on DLR network 10.9.1 General 10.9.2 Supported topologies Figure 36 – DLR ring connected to switches through redundant gateways
319	10.9.3 Redundant gateway capable device 10.9.4 Redundant gateway device behavior Figure 37 – DLR redundant gateway capable device
320	Table 163 – Redundant gateway variables
321	Figure 38 – Advertise frame
322	10.10 DLR messages 10.10.1 General
323	10.10.2 Common frame header Table 164 – MAC addresses for DLR messages Table 165 – IEEE 802.1Q common frame header format Table 166 –DLR message payload fields
324	10.10.3 Beacon frame 10.10.4 Neighbor_Check request Table 167 – DLR frame types Table 168 – Format of the Beacon frame Table 169 – Ring State values
325	10.10.5 Neighbor_Check_response 10.10.6 Link_Status/Neighbor_Status Table 170 – Format of the Neighbor_Check request Table 171 – Format of the Neighbor_Check response Table 172 – Format of the Link_Status/Neighbor_Status frame
326	10.10.7 Locate_Fault 10.10.8 Announce 10.10.9 Sign_On Table 173 – Link/Neighbor status values Table 174 – Format of the Locate_Fault frame Table 175 – Format of the Announce frame
327	10.10.10 Advertise 10.10.11 Flush_Tables Table 176 – Format of the Sign_On frame Table 177 – Format of the Advertise frame Table 178 – Gateway state values
328	10.10.12 Learning_Update 10.11 State diagrams and state-event-action matrices 10.11.1 Beacon-based ring node Table 179 – Format of the Flush_Tables frame Table 180 – Format of the Learning_Update frame
329	Figure 39 – State transition diagram for Beacon frame based non-supervisor ring node Table 181 – Parameter values for Beacon frame based non-supervisor ring node
330	Table 182 – LastBcnRcvPort bit definitions Table 183 – State-event-action matrix for Beacon frame based non-supervisor ring node
335	10.11.2 Announce-based ring node Figure 40 – State transition diagram for Announce frame basednon-supervisor ring node
336	Table 184 – Parameter values for Announce frame based non-supervisor ring node
337	Table 185 – State-event-action matrix for Announce frame basednon-supervisor ring node
339	10.11.3 Ring supervisor
340	Figure 41 – State transition diagram for ring supervisor
341	Table 186 – Parameter values for ring supervisor node
342	Table 187 – LastBcnRcvPort bit definitions Table 188 – State-event-action matrix for ring supervisor node
354	10.11.4 Redundant gateway
355	Figure 42 – State transition diagram for redundant gateway Table 189 – Parameter values for redundant gateway node
357	Table 190 – State-event-action matrix for redundant gateway node
359	10.12 Performance analysis 10.12.1 General Table 191 – Parameters/assumptions for example performance calculations
363	10.12.2 Redundant gateway switchover performance Table 192 – Example ring configuration parameters and performance Table 193 – Variables for performance analysis
364	11 PRP and HSR redundancy protocols 11.1 General
365	11.2 PRP overview 11.2.1 General Figure 43 – PRP network
366	11.2.2 Address Conflict Detection (ACD) Figure 44 – Directly Attached SANs
367	11.3 HSR overview Figure 45 – Virtual DANs Figure 46 – HSR network
369	Annex A (normative)Indicators and switches A.1 Purpose A.2 Indicators A.2.1 General indicator requirements A.2.2 Common indicator requirements
370	Table A.1 – Module status indicator
371	A.2.3 Fieldbus specific indicator requirements – option 1 Table A.2 – Time Sync status indication
373	Table A.3 – Network status indicators
375	A.2.4 Fieldbus specific indicator requirements – option 2 Figure A.1 – Non redundant network status indicator labeling Figure A.2 – Redundant network status indicator labeling
377	Table A.4 – Network status indicator
378	Figure A.3 – Network status indicator state diagram Figure A.4 – Examples of multiple network status indicators
379	A.2.5 Fieldbus specific indicator requirements – option 3
380	Table A.5 – Network status indicator
381	Table A.6 – Combined module/network status indicator
382	Table A.7 – I/O status indicator
383	A.3 Switches A.3.1 Common switch requirements A.3.2 Fieldbus specific switch requirements – option 1 A.3.3 Fieldbus specific switch requirements – option 2
384	A.3.4 Fieldbus specific switch requirements – option 3 Table A.8 – Bit rate switch encoding
385	Bibliography

Published By	Publication Date	Number of Pages
BSI	2019	388


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Status	Withdrawn
Title	Industrial communication networks. Fieldbus specifications – Data-link layer protocol specification. Type 2 elements
Replaces	BS EN 61158-4-2:2014
Publisher	BSI
Committee	GEL/65/3
Pages	388
Publication Date	2019-07-04
Withdrawn Date	2023-04-28
Replaced By	BS EN IEC 61158-4-2:2023
ISBN	978 0 539 04853 7
Standard Number	BS EN IEC 61158-4-2:2019
Identical National Standard Of	EN 61158-4-2:2019, IEC 61158-4-2:2019
Descriptors	Computer networks, Fieldbus, Process control, Communication networks, Automatic control systems, Communication procedures, Industrial, Data transmission, Interfaces (data processing), Data link layer (OSI), Open systems interconnection, Bus networks
ICS Codes	25.040.40 - Industrial process measurement and control

BS EN IEC 61158-4-2:2019

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BS EN IEC 61158-4-2:2019 – TC:2020 Edition