GB/T 31230.4-2014 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 31230.4-2014	RFQ	ASK	3 days	Industrial ethernet fieldbus Ether CAT -- Part 4: Data Link Layer protocol specification	Valid

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Basic data

Standard ID: GB/T 31230.4-2014 (GB/T31230.4-2014)
Description (Translated English): Industrial ethernet fieldbus Ether CAT -- Part 4: Data Link Layer protocol specification
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: N10
Classification of International Standard: 25.040
Word Count Estimation: 147,123
Date of Issue: 9/30/2014
Date of Implementation: 4/1/2015
Quoted Standard: GB/T 15272; GB/T 17967; GB/T 25931; ICE 61158-2-2010; IEC 61158-3-12; ISO/IEC 8802-3; IEEE 802.1Q; IETF RFC 768; IETF RFC 791; GB/T 9387.1; GB/T 9387.2; GB/T 9387.3; GB/T 9387.4
Regulation (derived from): People's Republic of China Announcement of Newly Approved National Standards 2014 No. 22
Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary: This Standard specifies the user from a data link layer entity to one or more entities to transmit data or control information of the process; the structure used in the present standard protocol for transferring data and control information DLPDU and repr

GB/T 31230.4-2014: Industrial ethernet fieldbus Ether CAT -- Part 4: Data Link Layer protocol specification

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. Industrial ethernet fieldbus Ether CAT Part 4. Data Link Layer protocol specification ICS 25.040 N10 National Standards of People's Republic of China Industrial Ethernet fieldbus EtherCAT Part 4. Data link layer protocol specification Part 4. DataLinkLayerprotocolspecification Issued on. 2014-09-30 2015-04-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Preface Ⅶ 1 Scope 1 1.1 Relationship with the IEC standard part 1 1.2 Overview 1 1.3 specification 1 1.4 Practice 1 1.5 Applicability 1 1.6 Consistency 1 2 Normative references 1 3 Terms, definitions, symbols and abbreviations 2 Terms and Definitions 3.1 Reference Model 2 3.2 Service agreement terms and definitions 3 3.3 General terms and definitions 4 Additional EtherCAT 3.4 Definition 5 3.5 General Symbols and Abbreviations 7 Other symbols and abbreviations 3.6 EtherCAT 8 3.7 Conventions 9 4 DL Protocol Overview 13 4.1 works 13 4.2 Topology 14 4.3 principles 14 4.4 Overview of the data link layer 15 15 4.5 Overview of error detection 4.6 Reference Model node 15 4.7 Operational Overview 16 5 Structure 17 5.1 Coding Guidelines 17 5.2 Data Types and Encoding Rules 17 5.3 DLPDU structure 19 5.4 EtherCATDLPDU structure 22 5.5 network variable structure 36 5.6 EtherCAT mailbox structure 36 6 Properties 38 6.1 Management 38 6.2 Statistics 50 54 6.3 Watchdog 6.4 slave interface information 57 6.5 Media Independent Interface (MII) 60 6.6 fieldbus memory management unit (FMMU) 63 6.7 Synchronization Manager 66 6.8 Distributed clocks 71 7 DL user memory area 75 7.1 Overview 75 7.2 Mailbox Access Type 75 7.3 Cache Access Type 77 8 EtherCAT. FDL protocol state machine 78 8.1 Overview of the slave state machine 78 DL Description 79 8.2 State Machine Appendix A (Informative Appendix) EtherCAT. DL additional specifications of the protocol state machine 85 A.1 DHSM 85 A.1.1 primitive defines 85 A.1.2 The state machine describes 86 A.1.3 DHSM Table 87 A.1.4 function 113 A.2 SYSM 114 A.2.1 primitive defines 114 A.2.2 The state machine describes 116 A.2.3 SYSM table 116 A.2.4 function 133 A.3 RMSM 133 A.3.1 primitive defines 133 A.3.2 The state machine describes 134 A.3.3 RMSM table 134 A.3.4 function 137 References 138 Figure 1 Type Description Example 10 Public structure Figure 2 specific fields 11 Figure 3 Structure 14 Figure 4 a single frame of data mapping 15 5 slave node reference model 16 Figure 6 EtherCATPDU embedded Ethernet frame 17 Figure 7 EtherCATPDU embedded in UDP/IP 17 Figure 8 DL information Type Description 39 9 Address Type Description 41 Figure 10 DL control Type Description 42 Figure 11 DL Status Type Description 44 12 DL user successfully write sequence control register 46 13 successful reading sequence DL user status register 46 Figure 14 RX error counter Type Description 51 15 missing link counter Type Description 52 16 additional counter Type Description 53 17 Type Description 54 Watchdog divider Figure 18 DLS user watchdog Type Description 55 19 Synchronization Manager Watchdog Type Description 55 20 Synchronization Manager watchdog status Type Description 56 21 Watchdog Timer Type Description 56 Figure 22 depicts the type of interface to access information from the station 57 Figure 23 illustrates the interface slave control/status type 58 Figure 24 depicts the interface slave address type 60 Figure 25 depicts a slave interface data type information 60 Figure 26 MII control/status Type Description 61 Figure 27 MII Address Type Description 62 Figure 28 MII Data Type Description 63 Figure 29 FMMU mapping example 63 Figure 30 FMMU Entity Type Description 64 Figure 31 Synchronization Manager interacts mailbox 66 32 Synchronization Manager cache allocation 67 33 Synchronization Manager cache 67 to each other 34 mailbox read write/read switching process 68 35 Synchronization Manager Channel Type Description 69 Figure 36 Distributed clock to local time Parameter Type Description 73 Fig. 37 to a mailbox successfully write sequence 75 38 on the mailbox failed write sequence 76 39 to a mailbox successfully read sequence 76 40 Failure to read mail sequences 77 41 Successful write cache sequence 77 42 Successful read cache sequence 78 Figure 43 Structure of slave protocol machine 79 Figure 44 SII read 80 Figure 45 SII writes 81 Figure 46 SII reload the operating 82 47 distributed clocks 83 48 delay measurement sequence 84 Table 1 PDU element formulation Example 10 Table 2 Property Description Example 11 Table 3 describes the state machine element 12 Table 4 state machine description of the element 12 13 Table 5 Conventions used in the state machine Table 6 serial transfer syntax 17 Table 7 Unsignedn type of data transfer syntax 18 Table 8 Integern type of data transfer syntax 19 Table 9 EtherCAT frame embedded Ethernet frame 19 Table 10 EtherCAT frame embedded UDPPDU 20 Table 11 EtherCAT frame structure contains 21 EtherCATPDU Table 12 EtherCAT frame structure includes a network of 21 variables Table 13 EtherCAT frame structure contains the mailbox 21 Table 14 increment physical read formula (APRD) 22 Table 15 configurable physical address read (FPRD) 23 Table 16 broadcast read (BRD) 24 Table 17 logical reads (LRD) 25 Table 18 self-energizing type physical write (APWR) 26 Table 19 configured address physical write (FPWR) 27 Table 20 broadcast write (BWR) 28 Table 21 Logical write (LWR) 29 Table 22 self-energizing type of physical literacy (APRW) 30 Table 23 configured to read and write physical address (FPRW) 31 Table 24 broadcast read (BRW) 32 Table 25 Logical write (LRW) 33 Table 26 increment physical read many write formula (ARMW) 34 Table 27 configurable physical address read many write (FRMW) 35 Table 28 network variables 36 Table 29 Mailbox 36 Table 30 error recovery services data 37 Table 31 DL information 40 Table 32 is configured station address 42 Table 33 DL control 43 Status 45 Table 34 DL Table 35 DLS user special register 47 Table 36 DLS user event 48 Table 37 DLS user event mask 49 50 Table 38 external events Table 39 external event mask 50 Table 40 RX error counter 51 Table 41 missing link counter 52 Table 42 additional counter 53 Table 43 Watchdog divider 54 55 Table 44 DLS user watchdog Table 45 Synchronization Manager Watchdog channel 55 Table 46 Synchronization Manager watchdog state 56 Table 47 Watchdog counter 56 Table 48 to access information from the station interface 57 Table 49 Slave Information Interface Control/Status 58 Table 50 Actual slave interface address information 60 Table 51 actual data information from the station interface 60 Table 52 MII control/status 61 Table 53 Actual MII address 62 63 Table 54 MII actual data Table 55 fieldbus memory management unit (FMMU) entity 65 Table 56 fieldbus memory management unit (FMMU) 65 Table 57 Synchronization Manager Channel 70 Table 58 Structure Synchronization Manager 71 Table 59 local distributed clock parameters 73 Table 60 distributed clocks DLS user parameters 74 Table A.1 DHSM to PSM by the primitive 85 Table A.2 by the PSM to DHSM primitives 85 Table A.3 DHSM all parameters between PSM and primitives exchanged 85 Table A.4 Ethernet frame identifier octet 86 Table A.5 DHSM state table 87 Table A.6 DHSM function table 113 Table A.7 by the SYSM to DHSM primitives 114 Table A.8 by the DHSM to SYSM primitives 115 Table A.9 by the DL user to SYSM primitives 115 Table A.10 SYSM by the user to the DL primitives 115 Table A.11 primitive parameters for switching between SYSM and DHSM used by the 116 Table A.12 SYSM state table 117 Table A.13 SYSM function table 133 Table A.14 by the RMSM to SYSM primitives 133 Table A.15 by the SYSM to RMSM primitives 134 All parameters Table 134 primitives used between A.16 RMSM and SYSM Table A.17 RMSM state table 135 Table A.18 RMSM function table 137

Foreword

GB/T 31230 "Industrial Ethernet fieldbus EtherCAT" is divided into six sections. --- Part 1. Overview --- Part 2. Physical layer service and protocol specification --- Part 3. Data link layer service definition --- Part 4. Data link layer protocol specification --- Part 5. Application layer service definition --- Part 6. Application layer protocol specification This section GB/T Part of 431,230. This section drafted in accordance with GB/T 1.1-2009 given rules. This part is proposed by China Machinery Industry Federation. This part of the measurement and control of Standardization Technical Committee (SAC/TC124) is administered by the National industrial processes. This section is drafted. Machinery Industrial Instrumentation Technology and Economy Institute, comprehensive measurement instrument Beijing Technology Development Co., Southwest University, Shanghai Automation Instrumentation Co., Ltd., Chinese Academy of Sciences (Shenyang) Institute of Automation, Tsinghua University, Beijing University of Aeronautics and Astronautics, Beijing Jiaotong University, when Beijing and advantage systems engineering Co., Ltd., Shunde Branch of CAS Institute of Computing, Omron Industrial Automation, Beckhoff Beijing stars The company, ETG China. The main drafters of this section. Xiesu Fen, high mirror Mei, Liu Dan, Liu Feng, including Wei-hua, Yang family, Wang Xue, Liu Yanjiang, Fan Yu, Luo, Chen Bingbing, Tianbing Li, Guan Peng, Fan Bin, Cheng Geng. Industrial Ethernet fieldbus EtherCAT Part 4. Data link layer protocol specification

1 Scope

Relations section 1.1 and IEC standards GB/T 31230 in this section depends on the IEC 61158 series of 12 file types in the corresponding section. 1.2 Overview In the automation environment, the data link layer provides the basic time-critical communication between devices. This Agreement in the specification of the communication will apply to all participating data link entity. a) the communication cycle started simultaneously; b) the corresponding week of the requirements of the data link entities, periodic or non periodic asynchronous communication. Thus we can see, this agreement has the following features. asynchronous access cycles or cycle, but there is a restart synchronized each cycle. 1.3 specification This section provides. a) from a data link layer of the user entity to one or more entities to transmit data or control information process; Structure b) used in the present standard protocol for transferring data and control information DLPDU and representation as physical interface data units. 1.4 Regulations By the following way to define each procedure. a) interaction DL- entity (DLE) generated by the switching DLPDU between; B) between a DL- service in the same system by a DLS primitive exchange generated (DLS) DLS provider and a user Interaction; c) interaction DLS- provider and ISO /IEC 8802-3 MAC's services. 1.5 Applicability These procedures are applicable to instances of communication between two systems. support time data link layer of the OSI model in critical communications services Instances of communication between systems and capabilities need to be interconnected in OSI environment system. Line regulation provides a simple, multi-attribute approach a summary of equipment capacity, in this way can be applied to different time-critical communications demand. 1.6 Consistency This section also provides procedures to achieve these system conformance requirements. This section does not contain a test to demonstrate compliance with these requirements.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein ......

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