IEC 62601:2011

IEC 62601 ®
Edition 1.0 2011-11
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Fieldbus specifications – WIA-PA
communication network and communication profile

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IEC 62601 ®
Edition 1.0 2011-11
INTERNATIONAL
STANDARD
colour
inside
Industrial communication networks – Fieldbus specifications – WIA-PA
communication network and communication profile

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
PRICE CODE
XH
ICS 25.040.40; 35.100.05 ISBN 978-2-88912-788-7
– 2 – 62601 © IEC:2011(E)
CONTENTS
FOREWORD . 13
1 Scope . 15
2 Normative references . 15
3 Terms, definitions and abbreviations . 15
3.1 Terms and definitions . 15
3.2 Abbreviations . 19
4 Specification of data types . 21
4.1 Representation of boolean type . 21
4.2 Representation of unsigned integer type . 21
4.3 Representation of octet type . 21
4.4 Representation of floating point number type . 21
5 WIA-PA overview . 22
5.1 Device types . 22
5.2 Network topology. 22
5.3 Protocol architecture . 24
5.4 Interconnection . 25
6 System management . 25
6.1 General . 25
6.2 Framework of system management . 27
6.3 Joining process . 28
6.3.1 Joining process of routing device . 28
6.3.2 Joining process of field device . 30
6.3.3 Addressing and address assignment . 31
6.4 Virtual Communication Relationship (VCR) . 31
6.4.1 Definition . 31
6.4.2 Protocol support for VCR . 32
6.4.3 VCR establishment . 33
6.4.4 VCR release . 33
6.5 Routing configuration and communication resource allocation . 33
6.5.1 Routing configuration. 33
6.5.2 Framework of communication resource allocation . 33
6.5.3 DLPDU priority and scheduling rules . 34
6.5.4 Communication resource allocation to routing device . 35
6.5.5 Communication resource allocation to field device . 35
6.6 Aggregation and disaggregation . 36
6.6.1 Aggregation . 36
6.6.2 Disaggregation . 38
6.6.3 An example of the two level aggregation process . 39
6.6.4 Management of aggregation and disaggregation objects. 41
6.7 Performance monitoring . 43
6.7.1 Path failure report . 43
6.7.2 Device status report . 43
6.7.3 Channel condition report. 44
6.8 Leaving process . 44
6.8.1 General . 44
6.8.2 Leaving process of routing device. 44

62601 © IEC:2011(E) – 3 –
6.8.3 Leaving process of field device . 46
6.9 Management information base and services . 47
6.9.1 Management information base . 47
6.9.2 MIB services . 59
7 Physical Layer . 61
8 Data link layer . 62
8.1 General . 62
8.2 Protocol stack . 62
8.3 MAC overview and function extension . 62
8.3.1 MAC overview . 62
8.3.2 MAC function extension . 63
8.4 DLSL function description . 66
8.4.1 General . 66
8.4.2 Coexistence . 67
8.4.3 Timeslot communication . 67
8.4.4 WIA-PA superframe . 68
8.4.5 Frequency hopping . 68
8.4.6 Transmission of long cycle data . 70
8.4.7 Retry strategy . 71
8.4.8 Management service . 71
8.4.9 Radio link quality and channel condition measurement . 71
8.4.10 Security . 71
8.4.11 DLSL state machine . 71
8.5 Data link sub-layer data services . 73
8.5.1 General . 73
8.5.2 DLDE-DATA.request . 73
8.5.3 DLDE-DATA.confirm . 74
8.5.4 DLDE-DATA.indication . 75
8.5.5 Time sequence of DLSL data service . 76
8.6 Data link sub-layer management services. 77
8.6.1 General . 77
8.6.2 Network discovery services . 77
8.6.3 Device joining services . 79
8.6.4 Device leaving services . 81
8.6.5 DLME-CHANNEL-CONDITION.indication. 82
8.6.6 DLME-NEIGHBOR-INFO.indication . 83
8.6.7 DLME-COMM-STATUS.indication . 83
8.6.8 Keep-alive services . 84
8.6.9 Time synchronization services . 85
8.7 DLSL frame formats . 86
8.7.1 General frame format . 86
8.7.2 Date frame format. 86
8.7.3 Command frame format . 87
9 Network layer . 87
9.1 General . 87
9.2 Protocol stack . 87
9.3 Function description . 88
9.3.1 General . 88
9.3.2 Addressing . 88

– 4 – 62601 © IEC:2011(E)
9.3.3 Routing . 89
9.3.4 Packet lifecycle management . 89
9.3.5 Joining and leaving network of device . 89
9.3.6 End-to-end network performance monitoring . 89
9.3.7 Fragmentation and reassembly . 90
9.3.8 Network layer state machine . 90
9.4 Network layer data services . 91
9.4.1 General . 91
9.4.2 NLDE-DATA.request . 91
9.4.3 NLDE-DATA.confirm . 91
9.4.4 NLDE-DATA.indication . 92
9.4.5 Time sequence of NL data services . 92
9.5 Network layer management services . 93
9.5.1 General . 93
9.5.2 Network communication status report services . 93
9.5.3 Network joining services . 95
9.5.4 Network leaving services . 101
9.5.5 Cluster member report services . 107
9.5.6 Neighbor information report services . 109
9.5.7 Route allocation services . 110
9.5.8 Communication resource allocation services . 116
9.5.9 Aggregation and disaggregation services . 131
9.5.10 Device status report services . 132
9.5.11 Channel condition report services . 134
9.5.12 Failure path report services . 136
9.5.13 Network attribute getting services . 137
9.5.14 Network attribute setting services . 140
9.6 Network layer packet formats . 143
9.6.1 Common packet format . 143
9.6.2 Data packet format . 144
9.6.3 Aggregated packet format . 144
9.6.4 Command packet format . 145
10 Application Layer . 160
10.1 Overview . 160
10.1.1 General . 160
10.1.2 AL structure . 160
10.1.3 Functions of UAP. 161
10.1.4 Functions of ASL . 161
10.2 UAP . 161
10.2.1 General . 161
10.2.2 UAO . 162
10.2.3 Method definition . 163
10.3 Application sub-layer . 166
10.3.1 General . 166
10.3.2 Application sub-layer data entity . 166
10.4 Application sub-layer packet formats . 171
10.4.1 General . 171
10.4.2 ASL general packet format . 172
10.4.3 Packet formats . 173

62601 © IEC:2011(E) – 5 –
11 Security . 175
11.1 General . 175
11.2 Security management framework . 175
11.3 Secure communication protocol stack . 176
11.3.1 General . 176
11.3.2 MAC layer security . 177
11.3.3 Data link sub-layer security . 177
11.3.4 Application sub-layer security . 179
11.4 Key management . 180
11.4.1 Key type . 180
11.4.2 Key distribution . 181
11.4.3 Key update . 181
11.4.4 Key status . 182
11.5 Secure joining process . 182
11.5.1 Secure joining process of a new WIA-PA device . 182
11.5.2 Device security material getting services . 183
11.6 Secure transportation . 187
11.6.1 Process of secure transportation from field device to host
configuration computer . 187
11.6.2 Process of secure transportation from host configuration computer to
field device . 188
Annex A (informative) Security strategy for WIA-PA network . 189
Annex B (informative) Format description for WIA-PA standard . 191
Annex C (informative) Example of UAO . 193
Bibliography . 195

Figure 1 – Example of WIA-PA physical topology (combination of star and mesh) . 23
Figure 2 – Example of WIA-PA physical topology (star-only) . 23
Figure 3 – OSI basic reference model mapped to WIA-PA . 24
Figure 4 – The architecture of WIA-PA gateway . 25
Figure 5 – DMAP in system management . 26
Figure 6 – Hybrid centralized and distributed system management scheme . 28
Figure 7 – Joining process of routing device through the gateway device . 29
Figure 8 – Joining process of routing device through an online routing device . 29
Figure 9 – Joining process of field device through a gateway device . 30
Figure 10 – Joining process of field device through a routing device . 30
Figure 11 – Long address structure of device. 31
Figure 12 – Short address structure of routing device . 31
Figure 13 – Short address structure of field device . 31
Figure 14 – An example of resource allocation . 34
Figure 15 – Allocation process of routing device’s communication resources . 35
Figure 16 – Allocation process of field device’s communication resources . 36
Figure 17 – Example of aggregation and disaggregation . 40
Figure 18 – Process of path failure report . 43
Figure 19 – Device status report process of field device . 43
Figure 20 – Device status report process of routing device . 44

– 6 – 62601 © IEC:2011(E)
Figure 21 – Process of channel condition report . 44
Figure 22 – Active leaving process of routing device . 45
Figure 23 – Passive leaving process of routing device . 45
Figure 24 – Active leaving process of field device (leaving from gateway device) . 46
Figure 25 – Active leaving process of field device (leaving from routing device) . 46
Figure 26 – Passive leaving process of field device (leaving from gateway device) . 47
Figure 27 – Passive leaving process of field device (leaving from routing device) . 47
Figure 28 – WIA-PA DLL protocol stack . 62
Figure 29 – WIA-PA DLSL reference model . 67
Figure 30 – WIA-PA superframe . 68
Figure 31 – R1, R2 and R3 superframe structures . 70
Figure 32 – An example of long cycle data transmission . 70
Figure 33 – DLSL state machine . 72
Figure 34 – Time sequence of data service . 76
Figure 35 – Time sequence of network discovery . 79
Figure 36 – General frame format . 86
Figure 37 – WIA-PA network layer protocol stack . 87
Figure 38 – WIA-PA Network layer reference model . 88
Figure 39 – Network layer state machine . 90
Figure 40 – Time sequence of NL data services . 93
Figure 41 – Time sequence for field device joining through routing device . 98
Figure 42 – One-hop joining process for routing device . 99
Figure 43 – Multi-hop join process of routing device . 100
Figure 44 – Active leaving process of field device (leaving routing device) . 103
Figure 45 – Passive leaving of field device . 104
Figure 46 – Active leaving process of routing device . 105
Figure 47 – Passive leaving process of routing device . 106
Figure 48 – Cluster member reporting process . 108
Figure 49 – Neighbor information reporting process . 110
Figure 50 – Time sequence for route adding . 112
Figure 51 – Time sequence for route updating . 114
Figure 52 – Time sequence for route deleting . 116
Figure 53 – Adding a link originated from gateway device to routing device . 119
Figure 54 – Adding a link originated from routing device to field device. 119
Figure 55 – Updating a link originated by gateway device to routing device . 121
Figure 56 – Updating a link originated from routing device to field device . 121
Figure 57 – Releasing a link originated from gateway device to routing device. 123
Figure 58 – Releasing a link originated from routing device to field device . 124
Figure 59 – Adding a superframe originated from gateway device to routing device . 126
Figure 60 – Adding a superframe originated from routing device to field device . 126
Figure 61 – Updating a superframe originated from gateway device to routing device . 128
Figure 62 – Updating a superframe originated from routing device to field device . 128
Figure 63 – Releasing a superframe originated from gateway device to routing device . 130

62601 © IEC:2011(E) – 7 –
Figure 64 – Releasing a superframe originated from routing device to field device . 130
Figure 65 – Device status reporting process from field device to routing device . 133
Figure 66 – Device status reporting process from routing device to gateway device . 134
Figure 67 – Channel condition reporting process from field device to routing device . 135
Figure 68 – Channel condition reporting process from routing device to gateway device . 136
Figure 69 – Failure path reporting process . 137
Figure 70 – Network layer common packet format . 143
Figure 71 – Network layer data packet format . 144
Figure 72 – Aggregated packet format . 144
Figure 73 – Format of NL command packet . 145
Figure 74 – AL structure . 160
Figure 75 – User application process . 161
Figure 76 – C/S communication process . 169
Figure 77 – P/S communication process (disable aggregation function) . 170
Figure 78 – P/S communication process (enable aggregation function) . 171
Figure 79 – R/S communication process . 171
Figure 80– Application sub-layer general packet format . 172
Figure 81 – ASL data packet format . 173
Figure 82 – Acknowledgement packet format . 174
Figure 83 – Security management framework of WIA-PA network . 175
Figure 84 – Security communication protocol stack . 177
Figure 85 – MPDU structure . 177
Figure 86 – Security DLPDU structure . 178
Figure 87 – Security APDU structure . 179
Figure 88 – Key lifecycle . 181
Figure 89 – Secure joining process of WIA-PA device . 182
Figure 90 – Time sequence for field device joining (Field device to routing device ) . 185
Figure 91 – Time sequence for field device joining (Routing device to gateway device) . 185
Figure 92 – One-hop joining process for routing device . 186
Figure 93 – Multi-hop join process of routing device (new routing device to routing
device) . 186
Figure 94 – Multi-hop join process of routing device (routing device to gateway device) . 187
Figure B.1 – Time sequence diagram . 191

Table 1 – Protocol support for VCR. 32
Table 2 – Relations between VCR and aggregation function . 37
Table 3 – Format of aggregated data followed by field device’s DAGO . 38
Table 4 – Format of aggregated packet followed by routing device’s PAGO . 38
Table 5 – DAGO class attributes . 41
Table 6 – DAGO instance attributes . 41
Table 7 – MEM_STRUCT structure . 42
Table 8 – PAGO class attributes . 42
Table 9 – PAGO instance attributes . 42

– 8 – 62601 © IEC:2011(E)
Table 10 – DGO class attributes . 42
Table 11 – DGO instance attributes . 43
Table 12 – Unstructured attributes . 48
Table 13 – Structured attributes . 51
Table 14 – NLRoute_Struct structure . 52
Table 15 – Superframe_Struct structure . 52
Table 16 – Link_Struct structure . 53
Table 17 – Neighbor_Struct structure . 54
Table 18 – ChanCon_Struct structure . 54
Table 19 – Device_struct structure . 55
Table 20 – VCR_Struct structure . 57
Table 21 – DevConRep_Struct structure . 58
Table 22 – Key_Struct structure . 58
Table 23 – ObjList_Struct structure . 59
Table 24 – DMAP-MIB-GET.request parameters . 59
Table 25 – DMAP-MIB-GET.confirm parameters . 60
Table 26 – DMAP-MIB-SET.request parameters . 61
Table 27 – DMAP-MIB-SET.confirm parameters. 61
Table 28 – MAC extended PIB attributes . 63
Table 29 – MAC extended command frame . 63
Table 30 – MLME-KEEP-LIVE.confirm parameters . 64
Table 31 – MLME-KEEP-LIVE.indication parameters . 64
Table 32 – MLME-TIME-SYN.request parameters . 64
Table 33 – MLME-TIME-SYN.confirm parameters . 65
Table 34 – MLME-TIME-SYN.indication parameters . 65
Table 35 – Beacon payload . 65
Table 36– Format of keep-alive command frame . 66
Table 37– Format of time synchronization command frame . 66
Table 38 – Hopping mechanisms . 69
Table 39 – DLSL state transitions . 72
Table 40 – DLDE-DATA.request parameters . 74
Table 41 – DLDE-DATA.confirm parameters . 75
Table 42 – Status table . 75
Table 43 – DLDE-DATA.indication parameters . 76
Table 44 – DLME-DISCOVERY.request parameters . 77
Table 45 – DLME- DISCOVERY.confirm parameters . 78
Table 46 – Network descriptor list . 78
Table 47 – DLME-JOIN.request parameters . 79
Table 48 – DLME-JOIN.indication parameters . 80
Table 49 – DLME-JOIN.response parameters . 80
Table 50 – DLME-JOIN.confirm parameters . 81
Table 51 – DLME-LEAVE.request parameters . 81
Table 52 – DLME-LEAVE.indication parameters . 82

62601 © IEC:2011(E) – 9 –
Table 53 – DLME-LEAVE.confirm parameters . 82
Table 54 – DLME-CHANNEL-CONDITION.indication parameters . 83
Table 55 – DLME-NEIGHBOR-INFO.indication parameters . 83
Table 56 – DLME-COMM-STATUS.indication parameters . 84
Table 57 – DLME -KEEP-LIVE.confirm parameters . 84
Table 58 – DLME -KEEP-LIVE.indication parameters . 85
Table 59 – DLME-TIME-SYN.request parameters . 85
Table 60 – DLME -TIME-SYN.confirm parameters . 85
Table 61 – DLME-TIME-SYN.indication parameters . 86
Table 62 – DLSL frame control filed . 86
Table 63 – Date frame format . 87
Table 64 – General command frame format . 87
Table 65 – DLSL command frame . 87
Table 66 – Example of a routing table . 89
Table 67 – Network layer states . 90
Table 68– NL state transitions . 90
Table 69 – NLDE-DATA.request parameters . 91
Table 70 – NLDE-DATA.confirm parameters . 92
Table 71 – NLDE-DATA.indication parameters . 92
Table 72 – NLME-COMM-STATUS.request parameters . 93
Table 73 – NLME-COMM-STATUS.indication parameters . 94
Table 74 – NLME-COMM-STATUS.confirm parameters. 94
Table 75 – NLME-JOIN.request parameters . 95
Table 76 – NLME-JOIN.indication parameters . 96
Table 77 – NLME-JOIN.response parameters . 96
Table 78 – NLME-JOIN.confirm parameters . 97
Table 79 – NLME-LEAVE.request parameters . 101
Table 80 – NLME-LEAVE.indication parameters . 101
Table 81 – NLME-LEAVE.response parameters . 101
Table 82 – NLME-LEAVE.confirm parameters . 102
Table 83 – NLME-RPT-CLRMEM.request parameters . 107
Table 84 – NLME-RPT-CLRMEM.confirm parameter . 107
Table 85 – NLME-RPT-CLRMEM.response parameters . 108
Table 86 – NLME-NEIGHBOR-INFO.request parameters . 109
Table 87 – NLME-NEIGHBOR-INFO.confirm parameter . 110
Table 88 – NLME-ADD_ROUTE.request parameters . 110
Table 89 – NLME-ADD_ROUTE.confirm parameters . 111
Table 90 – NLME-UPDATE_ROUTE.request parameters . 112
Table 91 – NLME-UPDATE_ROUTE.confirm parameter . 113
Table 92 – NLME-UPDATE_ROUTE.request parameters . 114
Table 93 – NLME-DELETE_ROUTE.confirm parameters . 115
Table 94 – NLME-ADD-LINK.request parameters . 117
Table 95 – NLME-ADD-LINK.con
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