7SR224 Argus Data Comms
Section 4: Modbus Definitions
4.1 Introduction
This section describes the MODBUS-RTU protocol implementation in the relays. This protocol is used for
communication with a suitable control system.
This protocol can be set to use the Fibre Optic, RS232 and RS485 ports. The relay can communicate
simultaneously on all ports regardless of protocol used.
Each relay must be given an address to enable communication and can be set by the Communication
Interface:Relay Address. A relay with the default address of 0 will not be able to communicate.
Definitions with shaded area are not available on all relay models.
Coils (Read Write Binary values)
Address Description
00001 Binary Output 1
00002 Binary Output 2
00003 Binary Output 3
00004 Binary Output 4
00005 Binary Output 5
00006 Binary Output 6
00007 Binary Output 7
00008 Binary Output 8
00009 Binary Output 9
00010 Binary Output 10
00011 Binary Output 11
00012 Binary Output 12
00013 Binary Output 13
00014 Binary Output 14
00015 Binary Output 15
00016 Binary Output 16
00017 Binary Output 17
00018 Binary Output 18
00019 Binary Output 19
00020 Binary Output 20
00021 Binary Output 21
00022 Binary Output 22
00023 Binary Output 23
00024 Binary Output 24
00025 Binary Output 25
00026 Binary Output 26
00027 Binary Output 27
00028 Binary Output 28
00029 Binary Output 29
00030 Binary Output 30
00031 Binary Output 31
00032 Binary Output 32
00100 LED Reset (Write only location)
00101 Settings Group 1
00102 Settings Group 2
00103 Settings Group 3
00104 Settings Group 4
00105 Settings Group 5
00106 Settings Group 6
00107 Settings Group 7
00108 Settings Group 8
00109 Circuit Breaker 1
©2010 Siemens Protection Devices Limited Chapter 4 Page 26 of 76
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