Siemens 7SR105 Rho - Physical Connection; IEC 60870-5-103 Definitions; MODBUS Definitions; DNP3 Definitions

Chapter 4 - 7SR105 Rho · Data Communications Definitions
© 2018 Siemens Protection Devices Chapter 4 - Page 3 of 70
Contents
1. Introduction................................................................................................................5
2. Physical Connection..................................................................................................7
2.1 Introduction................................................................................................................................................ 7
2.2 USB Interface (COM2).............................................................................................................................. 8
2.3 RS485 Interface (COM1)...........................................................................................................................8
3. IEC 60870-5-103 Definitions...................................................................................11
3.1 Introduction...............................................................................................................................................11
3.2 Cause of Transmission............................................................................................................................12
3.3 Application Service Data Unit (ASDU) Type........................................................................................... 13
3.4 Point List.................................................................................................................................................. 14
3.4.1 Event Function (FUN) & Information (INF) Numbers................................................................ 14
3.4.2 Measurands............................................................................................................................... 19
3.4.3 Disturbance Recorder Actual Channel (ACC) Numbers........................................................... 20
4. MODBUS Definitions...............................................................................................21
4.1 Introduction...............................................................................................................................................21
4.2 MODBUS Register Data Types...............................................................................................................22
4.2.1 FLOAT_IEEE_754..................................................................................................................... 22
4.2.2 FP_32BITS_3DP....................................................................................................................... 23
4.2.3 UINT32.......................................................................................................................................23
4.2.4 UINT16.......................................................................................................................................23
4.2.5 EVENT.......................................................................................................................................24
4.2.6 EVENTCOUNT.......................................................................................................................... 25
4.2.7 TIME_METER............................................................................................................................25
4.2.8 STR32 & STR64....................................................................................................................... 25
4.2.9 BITSTRING................................................................................................................................25
4.3 Point List.................................................................................................................................................. 27
4.3.1 Coils (Read Write Binary values)..............................................................................................27
4.3.2 Inputs (Read Only Binary values)............................................................................................. 27
4.3.3 Input Registers (Read Only Registers)..................................................................................... 31
4.3.4 Holding Registers (Read Write Registers)................................................................................ 33
5. DNP3 Definitions.....................................................................................................35
5.1 Device Profile...........................................................................................................................................35
5.2 Implementation Table.............................................................................................................................. 38
5.3 Point List.................................................................................................................................................. 44
5.3.1 Binary Input Points.................................................................................................................... 44
5.3.2 Double Bit Input Points............................................................................................................. 48
5.3.3 Binary Output Status Points and Control Relay Output Blocks.................................................48
5.3.4 Counters.................................................................................................................................... 54
5.3.5 Analog Inputs.............................................................................................................................55
5.4 Additional Settings................................................................................................................................... 58
6. Not Applicable......................................................................................................... 59
7. Not Applicable......................................................................................................... 61
8. Serial Modems........................................................................................................ 63
8.1 Introduction...............................................................................................................................................63