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Chapter 4) 7SR17 Rho - Data Communications
Contents
1. Introduction.............................................................................................................. 5
2. Physical Connection................................................................................................ 6
2.1 Introduction.............................................................................................................................................. 6
2.2 USB Interface (COM2)............................................................................................................................ 7
2.3 RS485 Interface (COM1).........................................................................................................................8
3. IEC 60870-5-103 Definitions................................................................................. 10
3.1 Introduction............................................................................................................................................ 10
3.2 Cause of Transmission..........................................................................................................................11
3.3 Application Service Data Unit (ASDU) Type......................................................................................... 12
3.4 Point List................................................................................................................................................13
3.4.1 Event Function (FUN) & Information (INF) Numbers..............................................................13
3.4.2 Measurands............................................................................................................................. 20
3.4.3 Disturbance Recorder Actual Channel (ACC) Numbers......................................................... 21
4. MODBUS Definitions............................................................................................. 22
4.1 Introduction............................................................................................................................................ 22
4.2 MODBUS Register Data Types.............................................................................................................23
4.2.1 FLOAT_IEEE_754................................................................................................................... 23
4.2.2 FP_32BITS_3DP..................................................................................................................... 24
4.2.3 UINT32.................................................................................................................................... 24
4.2.4 UINT16.................................................................................................................................... 24
4.2.5 EVENT.....................................................................................................................................25
4.2.6 EVENTCOUNT........................................................................................................................ 26
4.2.7 TIME_METER..........................................................................................................................26
4.2.8 STR32 & STR64..................................................................................................................... 27
4.2.9 BITSTRING..............................................................................................................................27
4.3 Point List................................................................................................................................................28
4.3.1 Coils (Read Write Binary values)............................................................................................28
4.3.2 Inputs (Read Only Binary values)........................................................................................... 28
4.3.3 Input Registers (Read Only Registers)................................................................................... 33
4.3.4 Holding Registers (Read Write Registers).............................................................................. 37
5. DNP3 Definitions................................................................................................... 38
5.1 Device Profile........................................................................................................................................ 38
5.2 Implementation Table............................................................................................................................ 41
5.3 Point List................................................................................................................................................48
5.3.1 Binary Input Points..................................................................................................................48
5.3.2 Double Bit Input Points........................................................................................................... 54
5.3.3 Binary Output Status Points and Control Relay Output Blocks...............................................54
5.3.4 Counters.................................................................................................................................. 59
5.3.5 Analog Inputs.......................................................................................................................... 60
5.4 Additional Settings................................................................................................................................. 65
6. Not Applicable........................................................................................................66
7. Not Applicable........................................................................................................67
Chapter 4 - Page 2 of 75
© 2013 Siemens Protection Devices Limited
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