Micom P721, Техническое руководство

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Communication database P72x/EN CT/A11
MiCOM P721/P723 Page 3/78
CONTENT
1. INTRODUCTION 5
1.1 Purpose of this document 5
2. MODBUS PROTOCOL 6
2.1 Technical characteristics of the MODBUS connection 6
2.1.1 Parameters of the MODBUS connection 6
2.2 Synchronisation of exchanges messages 6
2.3 Message validity check 6
2.4 Address of the MiCOM relays 6
2.5 MODBUS functions of the MiCOM relays 7
2.6 Presentation of the MODBUS protocol 7
2.6.1 Frame size received by the protection device (slave) 7
2.6.2 Format of frames sent by the MiCOM relays 8
2.6.3 Messages validity check 8
3. MiCOM P721 AND P723 RELAY DATABASE ORGANISATION 9
3.1 Description of the application mapping 9
3.1.1 Settings 9
3.2 Page 0h – Product information, remote signalling and measurements 9
3.3 Page 1h – General remote parameters (part 1) 12
3.4 Page 2h –Setting group 1 remote parameters 16
3.5 Page 3h – Setting group 2 remote parameters 17
3.6 Page 4h –Access in writing 17
3.7 Page 5h – Boolean equations remote parameters 18
3.8 Page 6h – General remote parameters (part 2) 22
3.9 Page 7h – Remote device status 22
3.10 Page 8h –Remote data and time 22
3.11 Pages 9h to 21h – Disturbance record data 23
3.11.1 Meaning of each value channel 24
3.11.2 Calculation formula for phase current values 24
3.11.3 Calculation formula for earth current values 24
3.11.4 Logic channels 24
3.12 Page 22h – Disturbance record index frame 24
3.13 Page 35h 25
3.14 Page 36h – Event older record data 27
3.15 Page 37h – Fault record value data 28
3.15.1 Calculation formula for phase current values 28
3.15.2 Calculation formula for earth current values 28
3.16 Page 3Eh – Fault older record data 28