Section 4: Modbus Definitions; Introduction - Siemens 7SR23 DAD Manual

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 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. Valid settings are within the range 1 – 247, 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.
Table 5: Modbus-RTU Coils (Read/Write)
Address
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
00100 LED Reset
00101 Setting G1 selected
00102 Setting G2 selected
00103 Setting G3 selected
00104 Setting G4 selected
00105 Setting G5 selected
00106 Setting G6 selected
00107 Setting G7 selected
00108 Setting G8 selected
00120 Local mode
00121 Remote mode
00122 Service mode
00123 Local & Remote
00124 E/F Out
00130 Zone Switch Out
00131 Reset CB Trip Count
00132 Reset CB Delta Cnt
00133 Reset CB1 Open Cnt
00134 Reset CB1 Delta Cnt
00135 Reset CB2 Open Cnt
00136 Reset CB2 Delta Cnt
00137 Reset CB3 Open Cnt
©2013 Siemens Protection Devices Limited
Description
Chapter 4) 7SR23 DAD Data Communications
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Chapter 4 Page 23 of 54