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eLibrary > BS EN IEC 61158-4-2:2023 Industrial communication networks. Fieldbus specifications - Data-link layer protocol specification. Type 2 elements >

BS EN IEC 61158-4-2:2023 Industrial communication networks. Fieldbus specifications - Data-link layer protocol specification. Type 2 elements, 2023

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BS EN IEC 61158-4-2:2023 Industrial communication networks. Fieldbus specifications - Data-link layer protocol specification. Type 2 elements, 2023

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Annex ZA (normative)Normative references to international publicationswith their corresponding European publications
Blank Page [Go to Page]
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, abbreviated terms and conventions [Go to Page]
3.1 Reference model terms and definitions
3.2 Service convention terms and definitions
3.3 Common terms and definitions
3.4 Additional Type 2 definitions
3.5 Type 2 symbols and abbreviated terms
3.6 Conventions for station management objects
Tables [Go to Page]
Table 1 – Format of attribute tables
4 Overview of the data-link protocol [Go to Page]
4.1 General [Go to Page]
4.1.1 DLL architecture
Figures [Go to Page]
Figure 1 – Data-link layer internal architecture
Table 2 – Data-link layer components [Go to Page]
4.1.2 Access control machine (ACM) and scheduling support functions
4.1.3 Connection-mode, connectionless-mode data transfer and DL service
4.2 Services provided by the DL [Go to Page]
4.2.1 Overview
4.2.2 QoS
4.3 Structure and definition of DLaddresses [Go to Page]
4.3.1 General
4.3.2 MAC ID address
Figure 2 – Relationships of DLSAPs, DLSAPaddresses, and group DLaddresses
Figure 3 – Basic structure of a MAC ID address [Go to Page]
4.3.3 Generic tag address
4.3.4 Fixed tag 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
Table 4 – Fixed tag service definitions
4.4 Services assumed from the PhL [Go to Page]
4.4.1 General requirements
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
Table 6 – M Data symbols
Table 7 – Truth table for ph_status_indication
4.5 Functional classes
5 General structure and encoding of PhIDUs and DLPDUs and related elements of procedure [Go to Page]
5.1 Overview
5.2 Media access procedure
Figure 7 – NUT structure
Figure 8 – Media access during scheduled time
Figure 9 – Media access during unscheduled time
5.3 DLPDU structure and encoding [Go to Page]
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 [Go to Page]
5.3.6 Source MAC ID
5.3.7 Lpackets field
5.3.8 Frame check sequence (FCS)
Table 8 – FCS length, polynomials and constants [Go to Page]
5.3.9 Null DLPDU
5.3.10 Abort DLPDU
5.4 Lpacket components [Go to Page]
5.4.1 General Lpacket structure
Figure 11 – Aborting a DLPDU during transmission [Go to Page]
5.4.2 Size
5.4.3 Control
5.4.4 Generic tag Lpackets
Figure 12 – Lpacket format [Go to Page]
5.4.5 Fixed tag Lpackets
5.5 DLPDU procedures [Go to Page]
5.5.1 General
Figure 13 – Generic tag Lpacket format
Figure 14 – Fixed tag Lpacket format [Go to Page]
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
Table 9 – DLL support services and objects
6 Specific DLPDU structure, encoding and procedures [Go to Page]
6.1 Modeling language [Go to Page]
6.1.1 State machine description
6.1.2 Use of DLL- prefix
6.1.3 Data types
6.2 DLS user services [Go to Page]
6.2.1 General
Table 10 – Elementary data types [Go to Page]
6.2.2 Connected mode and connectionless mode transfer service
6.2.3 Queue maintenance service
6.2.4 Tag filter service
6.2.5 Link synchronization service
6.2.6 Synchronized parameter change service
6.2.7 Event reports service
Table 11 – DLL events [Go to Page]
6.2.8 Bad FCS service
6.2.9 Current moderator service
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 [Go to Page]
6.3.1 General
6.3.2 Structure of the generic-tag Lpacket
6.3.3 Sending and receiving the generic-tag Lpacket
6.4 Moderator Lpacket [Go to Page]
6.4.1 General
6.4.2 Structure of the moderator Lpacket
6.4.3 Sending and receiving the moderator Lpacket
6.5 Time distribution Lpacket [Go to Page]
6.5.1 General
6.5.2 Structure of the time distribution Lpacket
Figure 15 – Goodness parameter of TimeDist_Lpacket [Go to Page]
6.5.3 Sending and receiving the time distribution Lpacket
Table 12 – Time distribution priority
6.6 UCMM Lpacket [Go to Page]
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 [Go to Page]
6.7.1 General
6.7.2 Structure of the Keeper UCMM Lpacket
6.7.3 Sending and receiving the Keeper UCMM Lpacket
6.8 TUI Lpacket [Go to Page]
6.8.1 General
6.8.2 Structure of the TUI Lpacket
Table 13 – Format of the TUI Lpacket [Go to Page]
6.8.3 Sending and receiving the TUI Lpacket
6.9 Link parameters Lpacket and tMinus Lpacket [Go to Page]
6.9.1 General
6.9.2 Structure of link parameters and tMinus Lpackets
6.9.3 Sending and receiving the tMinus and Link parameters Lpackets
6.10 I'm-alive Lpacket [Go to Page]
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
6.11 Ping Lpackets [Go to Page]
6.11.1 General
Figure 16 – Example I'm alive processing algorithm [Go to Page]
6.11.2 Structure of the ping Lpackets
6.11.3 Sending and receiving the ping Lpackets
6.12 WAMI Lpacket [Go to Page]
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
6.14 IP Lpacket
6.15 Ethernet Lpacket
7 Objects for station management [Go to Page]
7.1 General
7.2 ControlNet™ object [Go to Page]
7.2.1 Overview
7.2.2 Class attributes
7.2.3 Instance attributes
Table 14 – ControlNet object class attributes
Table 15 – ControlNet object instance attributes
Table 16 – TUI status flag bits
Table 17 – Mac_ver bits
Table 18 – Channel state bits [Go to Page]
7.2.4 Common services
Table 19 – ControlNet object common services [Go to Page]
7.2.5 Class specific services
Table 20 – ControlNet object class specific services [Go to Page]
7.2.6 Behavior
7.2.7 Module status indicator
7.3 Keeper object [Go to Page]
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
Table 23 – Keeper object instance attributes
Table 24 – Keeper operating state definitions
Table 25 – Port status flag bit definitions
Table 26 – TUI status flag bits
Figure 17 – Keeper CRC algorithm [Go to Page]
7.3.5 Common services
Table 27 – Keeper attributes
Table 28 – Memory requirements (in octets) for the Keeper attributes [Go to Page]
7.3.6 Class specific services
Table 29 – Keeper object common services
Table 30 – Keeper object class specific services
Table 31 – Service error codes
Table 32 – Wire order format of the TUI Lpacket [Go to Page]
7.3.7 Service error codes
7.3.8 Behavior
Table 33 – Service error codes [Go to Page]
7.3.9 Miscellaneous notes
Table 34 – Keeper object operating states [Go to Page]
7.3.10 Keeper power up sequence
Figure 18 – Keeper object power-up state diagram
Figure 19 – Keeper object operating state diagram
Table 35 – Keeper object state event matrix
7.4 Scheduling object [Go to Page]
7.4.1 Overview
Figure 20 – Synchronized network change processing [Go to Page]
7.4.2 Class attributes
7.4.3 Instance attributes
Table 36 – Scheduling object class attributes [Go to Page]
7.4.4 Common services
Table 37 – Scheduling object instance attributes
Table 38 – Scheduling object common services
Table 39 – Status error descriptions for Create [Go to Page]
7.4.5 Class specific services
Table 40 – Status error descriptions for Delete and Kick_Timer
Table 41 – Scheduling object class specific services
Table 42 – Status error descriptions for Read
Table 43 – Status error descriptions for Conditional_Write
Table 44 – Status error descriptions for Forced_Write
Table 45 – Status error descriptions for Change_Start
Table 46 – Status error descriptions for Break_Connections
Table 47 – Status error descriptions for Change_Complete [Go to Page]
7.4.6 Typical scheduling session
Table 48 – Status error descriptions for Restart_Connections
7.5 TCP/IP Interface object [Go to Page]
7.5.1 Overview
7.5.2 Revision history
7.5.3 Class attributes
Table 49 – Revision history [Go to Page]
7.5.4 Instance attributes
Table 50 – TCP/IP Interface object class attributes
Table 51 – TCP/IP Interface object instance attributes
Table 52 – Status bits
Table 53 – Configuration capability bits
Table 54 – Configuration control bits
Table 55 – Example path
Table 56 – Interface configuration components
Table 57 – Alloc control values
Table 58 – AcdActivity values
Table 59 – ArpPdu – ARP Response PDU in binary format
Table 60 – Admin Capability member bit definitions
Table 61 – Admin Capability member bit definitions [Go to Page]
7.5.5 Diagnostic connection points
7.5.6 Common services
Table 62 – TCP/IP Interface connection point 1, Standard Network Diagnostics
Table 63 – TCP/IP Interface object common services
Table 64 – Get_Attributes_All response format [Go to Page]
7.5.7 Class specific services
Table 65 – Set_Attributes_All request format
Table 66 – TCP/IP Interface object class specific services
Table 67 – Set_Port_Admin_State service request parameters
Table 68 – Set_Protocol_Admin_State service request parameters [Go to Page]
7.5.8 Behavior
Figure 21 – State transition diagram for TCP/IP Interface object
Table 69 – Class specific error codes [Go to Page]
7.5.9 Address Conflict Detection (ACD)
Figure 22 – State transition diagram for TCP/IP Interface object
Figure 23 – ACD Behavior
7.6 Ethernet Link object [Go to Page]
7.6.1 Overview
7.6.2 Revision history
7.6.3 Class attributes
Table 70 – Ethernet link object revision history [Go to Page]
7.6.4 Instance attributes
Table 71 – Ethernet link object class attributes
Table 72 – Ethernet link object instance attributes
Table 73 – Interface flags bits
Table 74 – Control bits
Table 75 – Interface type
Table 76 – Interface state
Table 77 – Admin state
Table 78 – Capability Bits [Go to Page]
7.6.5 Diagnostic connection points
Table 79 – Ethernet Link connection point 1, Standard Network Diagnostics [Go to Page]
7.6.6 Common services
Table 80 – Ethernet Link object common services [Go to Page]
7.6.7 Class specific services
Table 81 – Get_Attributes_All response format [Go to Page]
7.6.8 Behavior
Table 82 – Ethernet Link object class specific services
7.7 DeviceNet™ object [Go to Page]
7.7.1 Overview
Figure 24 – State transition diagram for Ethernet Link object [Go to Page]
7.7.2 Revision history
7.7.3 Class attributes
7.7.4 Instance attributes
Table 83 – DeviceNet object revision history
Table 84 – DeviceNet object class attributes
Table 85 – DeviceNet object instance attributes
Table 86 – Bit rate attribute values
Table 87 – BOI attribute values
Table 88 – Diagnostic counters bit description [Go to Page]
7.7.5 Common services
Table 89 – DeviceNet object common services
Table 90 – Reset service parameter
Table 91 – Reset service parameter values [Go to Page]
7.7.6 Class specific services
Table 92 – DeviceNet object class specific services
7.8 Connection Configuration object (CCO) [Go to Page]
7.8.1 Overview
7.8.2 Revision history
7.8.3 Class attributes
Table 93 – Connection Configuration object revision history
Table 94 – Connection Configuration object class attributes [Go to Page]
7.8.4 Instance attributes
Table 95 – Format number values
Table 96 – Connection Configuration object instance attributes
Table 97 – Originator connection status values
Table 98 – Target connection status values
Table 99 – Connection flags
Table 100 – I/O mapping formats [Go to Page]
7.8.5 Connection Configuration object change control
7.8.6 Common services
Table 101 – Services valid during a change operation
Table 102 – Connection Configuration object common services
Table 103 – Get_Attributes_All Response – class level
Table 104 – Get_Attributes_All response – instance level
Table 105 – Set_Attributes_All error codes
Table 106 – Set_Attributes_All request
Table 107 – Create request parameters
Table 108 – Create error codes
Table 109 – Delete error codes [Go to Page]
7.8.7 Class specific services
Table 110 – Restore error codes
Table 111 – Connection Configuration object class specific services
Table 112 – Change_Start error codes
Table 113 – Get_Status service parameter
Table 114 – Get_Status service response
Table 115 – Get_Status service error codes
Table 116 – Change_Complete service parameter
Table 117 – Change_Complete service error codes
Table 118 – Audit_Changes service parameter
Table 119 – Audit_Changes service error codes [Go to Page]
7.8.8 Behavior
7.9 DLR object [Go to Page]
7.9.1 Overview
Figure 25 – Connection Configuration object edit flowchart [Go to Page]
7.9.2 Revision history
7.9.3 Class attributes
7.9.4 Instance attributes
Table 120 – Revision history
Table 121 – DLR object class attributes
Table 122 – DLR object instance attributes
Table 123 – Network Status values
Table 124 – Ring Supervisor Status values
Table 125 – Capability flags
Table 126 – Redundant Gateway Status values [Go to Page]
7.9.5 Diagnostic connection points
7.9.6 Common services
Table 127 – DLR connection point 1, Standard Network Diagnostics
Table 128 – DLR connection point 2, Standard Network Diagnostics
Table 129 – DLR object common services
Table 130 – Get_Attributes_All Response – Object Revision 1, non supervisor device
Table 131 – Get_Attributes_All Response – Object Revision 1, supervisor-capable device
Table 132 – Get_Attributes_All Response – Object Revision 2, non supervisor device
Table 133 – Get_Attributes_All Response – All other cases [Go to Page]
7.9.7 Class specific services
Table 134 – DLR object class specific services
7.10 QoS object [Go to Page]
7.10.1 Overview
7.10.2 Revision History
7.10.3 Class attributes
Table 135 – QoS object revision history [Go to Page]
7.10.4 Instance Attributes
Table 136 – QoS object class attributes
Table 137 – QoS object instance attributes [Go to Page]
7.10.5 Common services
Table 138 – Default DCSP values and usages
7.11 Port object [Go to Page]
7.11.1 Overview
7.11.2 Revision History
Table 139 – QoS object common services [Go to Page]
7.11.3 Class attributes
7.11.4 Instance attributes
Table 140 – Port object revision history
Table 141 – Port object class attributes
Table 142 – Port object instance attributes
Table 143 – Port Type and associated Logical Link Object classes and Port Type Name values
Table 144 – Port Routing Capabilities attribute bit definitions [Go to Page]
7.11.5 Common services
Figure 26 – Communication objects diagram for example device
Table 145 – Contents of Associated Communication objects attribute 11 for the two Port object instances of the example device
Table 146 – Port object common services
Table 147 – Get_Attributes_All response– class level
Table 148 – Get_Attributes_All response– instance level
7.12 PRP/HSR Protocol object [Go to Page]
7.12.1 Overview
7.12.2 Revision history
7.12.3 Class attributes
7.12.4 Instance attributes
Table 149 – Revision history
Table 150 – Class attributes
Table 151 – Instance attributes
Table 152 – Node Type
Table 153 – Switching Node
Table 154 – HSR Mode
Table 155 – RedBox ID [Go to Page]
7.12.5 Diagnostic connection points
7.12.6 Common Services
Table 156 – PRP/HSR Protocol connection point 1, Standard Network Diagnostics
Table 157 – PRP/HSR Protocol object common services
Table 158 – Get_Attributes_All response
7.13 PRP/HSR Nodes Table object [Go to Page]
7.13.1 Overview
7.13.2 Revision history
7.13.3 Class attributes
7.13.4 Instance attributes
Table 159 – Revision history
Table 160 – Class attributes
Table 161 – Instance attributes [Go to Page]
7.13.5 Common services
Table 162 – Remote Node Type
7.14 LLDP Management object [Go to Page]
7.14.1 Overview
7.14.2 Revision history
Table 163 – PRP/HSR Nodes Tables object common services
Table 164 – Get_Attributes_All response
Table 165 – Revision history [Go to Page]
7.14.3 Class attributes
7.14.4 Instance attributes
Table 166 – Class attributes
Table 167 – Instance attributes [Go to Page]
7.14.5 Common services
Table 168 – Bit Definitions of the LLDP Enable Array
7.15 LLDP Data Table object [Go to Page]
7.15.1 Overview
Table 169 – LLDP Management object common services
Table 170 – Get_Attributes_All response [Go to Page]
7.15.2 Revision history
7.15.3 Class attributes
7.15.4 Instance attributes
Table 171 – Revision history
Table 172 – Class attributes
Table 173 – Instance attributes [Go to Page]
7.15.5 Common services
Table 174 – Bitmaps of supported capabilities & enabled capabilities
Table 175 – LLDP Management object common services
8 Other DLE elements of procedure [Go to Page]
8.1 Network attachment monitor (NAM) [Go to Page]
8.1.1 General
Table 176 – Get_Attributes_All response
Table 177 – NAM states [Go to Page]
8.1.2 Default parameters
8.1.3 Auto-addressing
Figure 27 – NAM state machine
Table 178 – Default link parameters [Go to Page]
8.1.4 Valid MAC IDs
8.1.5 State machine description
8.2 Calculating link parameters [Go to Page]
8.2.1 Link parameters
8.2.2 Conditions affecting link parameters
8.2.3 Moderator change
8.2.4 NUT timing
Table 179 – PhL timing characteristics [Go to Page]
8.2.5 Slot timing
8.2.6 Blanking
8.2.7 Example implementation
9 Detailed specification of DL components [Go to Page]
9.1 General
9.2 Access control machine (ACM)
9.3 TxLLC
9.4 RxLLC
9.5 Transmit machine (TxM)
9.6 Receive machine (RxM)
9.7 Serializer
9.8 Deserializer [Go to Page]
9.8.1 Octet construction
9.8.2 FCS checking
9.8.3 End of DLPDU processing
9.9 DLL management
10 Device Level Ring (DLR) protocol [Go to Page]
10.1 General
10.2 Support for Multiple DLR Ring Pairs
Figure 28 – Devices with Multiple DLR Ring Pairs
10.3 Supported topologies
Figure 29 – DLR rings connected to switches
10.4 Overview of DLR operation [Go to Page]
10.4.1 Normal operation
Figure 30 – Normal operation of a DLR network
Figure 31 – Beacon and Announce frames [Go to Page]
10.4.2 Link failures
Figure 32 – Link failure
10.5 Classes of DLR implementation
Figure 33 – Network reconfiguration after link failure
10.6 DLR behavior [Go to Page]
10.6.1 DLR variables
10.6.2 Ring supervisor
Table 180 – DLR variables [Go to Page]
10.6.3 Ring node
10.6.4 Sign on process
10.6.5 Neighbor check process
10.7 Implementation requirements [Go to Page]
10.7.1 Embedded switch requirements and recommendations
Figure 34 – Neighbor Check process [Go to Page]
10.7.2 DLR implementation requirements
Table 181 – DLR Link speed and duplex requirements [Go to Page]
10.7.3 IEC 61588 and Type 2 Ethernet considerations
10.7.4 IEEE Std 802.1Q-2018 STP/RSTP/MSTP considerations
10.8 Using non-DLR nodes in the ring network [Go to Page]
10.8.1 General considerations
10.8.2 Non-DLR end devices
10.8.3 Non-DLR switches
Figure 35 – Unsupported topology – example 1
Figure 36 – Unsupported topology – example 2
10.9 Redundant gateway devices on DLR network [Go to Page]
10.9.1 General
10.9.2 Supported topologies
10.9.3 Redundant gateway capable device
Figure 37 – DLR ring connected to switches through redundant gateways [Go to Page]
10.9.4 Redundant gateway device behavior
Figure 38 – DLR redundant gateway capable device
Table 182 – Redundant gateway variables
Figure 39 – Advertise frame
10.10 DLR messages [Go to Page]
10.10.1 General
10.10.2 Common frame header
Table 183 – MAC addresses for DLR messages
Table 184 – IEEE Std 802.1Q-2018 common frame header format
Table 185 –DLR message payload fields [Go to Page]
10.10.3 Beacon frame
10.10.4 Neighbor_Check request
Table 186 – DLR frame types
Table 187 – Format of the Beacon frame
Table 188 – Ring State values [Go to Page]
10.10.5 Neighbor_Check_response
10.10.6 Link_Status/Neighbor_Status
Table 189 – Format of the Neighbor_Check request
Table 190 – Format of the Neighbor_Check response
Table 191 – Format of the Link_Status/Neighbor_Status frame [Go to Page]
10.10.7 Locate_Fault
10.10.8 Announce
10.10.9 Sign_On
Table 192 – Link/Neighbor status values
Table 193 – Format of the Locate_Fault frame
Table 194 – Format of the Announce frame [Go to Page]
10.10.10 Advertise
10.10.11 Flush_Tables
Table 195 – Format of the Sign_On frame
Table 196 – Format of the Advertise frame
Table 197 – Gateway state values [Go to Page]
10.10.12 Learning_Update
10.11 State diagrams and state-event-action matrices [Go to Page]
10.11.1 Beacon-based ring node
Table 198 – Format of the Flush_Tables frame
Table 199 – Format of the Learning_Update frame
Figure 40 – State transition diagram for Beacon frame based non-supervisor ring node
Table 200 – Parameter values for Beacon frame based non-supervisor ring node
Table 201 – LastBcnRcvPort bit definitions
Table 202 – State-event-action matrix for Beacon frame based non-supervisor ring node [Go to Page]
10.11.2 Announce-based ring node
Figure 41 – State transition diagram for Announce frame basednon-supervisor ring node
Table 203 – Parameter values for Announce frame based non-supervisor ring node
Table 204 – State-event-action matrix for Announce frame basednon-supervisor ring node [Go to Page]
10.11.3 Ring supervisor
Figure 42 – State transition diagram for ring supervisor
Table 205 – Parameter values for ring supervisor node
Table 206 – LastBcnRcvPort bit definitions
Table 207 – State-event-action matrix for ring supervisor node [Go to Page]
10.11.4 Redundant gateway
Figure 43 – State transition diagram for redundant gateway
Table 208 – Parameter values for redundant gateway node
Table 209 – State-event-action matrix for redundant gateway node
10.12 Performance analysis [Go to Page]
10.12.1 General
Table 210 – Parameters/assumptions for example performance calculations [Go to Page]
10.12.2 Redundant gateway switchover performance
Table 211 – Example ring configuration parameters and performance
Table 212 – Variables for performance analysis
11 PRP and HSR redundancy protocols [Go to Page]
11.1 General
11.2 PRP overview [Go to Page]
11.2.1 General
11.2.2 Address Conflict Detection (ACD)
Figure 44 – PRP network
11.3 HSR overview
Figure 45 – Directly Attached SANs
Figure 46 – Virtual DANs
12 LLDP protocol [Go to Page]
12.1 General
Figure 47 – HSR network
12.2 LLDP overview
12.3 Type 2 LLDP Transmission Requirements [Go to Page]
12.3.1 General
Figure 48 – IEEE LLDP PDU Format (source IEEE Std 802.1AB-2016)
Table 213 – LLDP support requirements [Go to Page]
12.3.2 Chassis ID TLV (TLV Type = 1)
12.3.3 Port ID TLV (TLV Type = 2)
Figure 49 – Type 2 LLDP PDU Format
Table 214 – LLDP TLV Type Values [Go to Page]
12.3.4 System Capabilities TLV (TLV Type = 7)
12.3.5 Management Address (TLV Type = 8)
12.3.6 Type 2 Identification TLV (TLV Type = 127)
12.3.7 Type 2 MAC Address TLV (TLV Type = 127)
12.3.8 Type 2 Interface Label TLV (TLV Type = 127)
Figure 50 – Type 2 Identification TLV Format
Figure 51 – Type 2 MAC Address TLV Format [Go to Page]
12.3.9 Additional Ethernet Capabilities TLV (TLV Type = 127)
12.4 Type 2 LLDP Reception Requirements
12.5 Type 2 LLDP Reporting Requirements
12.6 EtherNet/IP LLDP Link State Transition Requirements
Figure 52 – Type 2 Interface Label TLV Format
Annex A (normative)Indicators and switches [Go to Page]
A.1 Purpose
A.2 Indicators [Go to Page]
A.2.1 General indicator requirements
A.2.2 Common indicator requirements
Table A.1 – Module status indicator [Go to Page]
A.2.3 Fieldbus specific indicator requirements – option 1
Table A.2 – Time Sync status indication
Table A.3 – Network status indicators [Go to Page]
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
Table A.4 – Network status indicator
Figure A.3 – Network status indicator state diagram
Figure A.4 – Examples of multiple network status indicators [Go to Page]
A.2.5 Fieldbus specific indicator requirements – option 3
Table A.5 – Combined Module/Network status indicator
Table A.6 – Network status indicator
Table A.7 – Combined module/network status indicator
Table A.8 – I/O status indicator
A.3 Switches [Go to Page]
A.3.1 Common switch requirements
A.3.2 Fieldbus specific switch requirements – option 1
A.3.3 Fieldbus specific switch requirements – option 2
A.3.4 Fieldbus specific switch requirements – option 3
Table A.9 – Bit rate switch encoding
Bibliography [Go to Page]

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BS EN IEC 61158-4-2:2023 Industrial communication networks. Fieldbus specifications - Data-link layer protocol specification. Type 2 elements, 2023

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