Siemens 7SR45 Argus User Manual page 76

Contents
Section 1: Introduction ....................................................................................................................................... 3
Section 2: Physical Connection .......................................................................................................................... 4
2.1 Introduction ....................................................................................................................................... 4
2.2 USB Interface .................................................................................................................................... 4
2.3 RS485 Interface................................................................................................................................. 5
Section 3: Glossary ............................................................................................................................................ 7
Section 4: IEC 60870-5-103 Definitions .............................................................................................................. 8
4.1 Introduction ....................................................................................................................................... 8
4.2 Cause of Transmission ...................................................................................................................... 8
4.2.1 Application Service Data Unit (ASDU) Type .......................................................................... 8
4.2.2 Point List .............................................................................................................................. 8
4.3 Event Function (FUN) & Information (INF) Numbers............................................................................ 9
4.4 Measurands .................................................................................................................................... 11
Section 5: Modbus Definitions .......................................................................................................................... 12
5.1 INTRODUCTION ............................................................................................................................. 12
5.2 MODBUS Register Data Types ........................................................................................................ 12
5.2.1 FLOAT_IEEE_754 ............................................................................................................. 12
5.2.2 FP_32BITS_3DP................................................................................................................ 12
5.2.3 UINT32 .............................................................................................................................. 12
5.2.4 UINT16 .............................................................................................................................. 13
5.2.5 EVENT .............................................................................................................................. 13
5.2.6 EVENTCOUNT .................................................................................................................. 14
5.2.7 TIME_METER .................................................................................................................... 14
5.2.8 STR32 and STR64 ............................................................................................................. 15
5.2.9 POINTS LIST ..................................................................................................................... 15
Appendix 1 ...................................................................................................................................................... 19
Appendix 2 ...................................................................................................................................................... 20
© 2018 Siemens Protection Devices Limited
Chapter 4 - 7SR45 Data Communications Definitions
Chapter 4 Page 2 of 20