D.31
Date Code 20080918 Instruction Manual SEL-749M Relay
Modbus RTU Communications Protocol
Modbus Register Map
Control I/O Commands
2000 (W) LOGIC COMMAND
Bit 0 = Motor Start
Bit 1 = Motor Stop
Bit 2 = Emergency Restart
Bit 3 = Return Status 0/1
Bit 4 = DN Aux 1 Cmd
Bit 5 = DN Aux 2 Cmd
Bit 6 = DN Aux 3 Cmd
Bit 7 = DN Aux 4 Cmd
Bit 8 = DN Aux 5 Cmd
Bit 9 = DN Aux 6 Cmd
Bit 10 = DN Aux 7 Cmd
Bit 11 = DN Aux 8 Cmd
Bit 12 = DN Aux 9 Cmd
Bit 13 = DN Aux 10 Cmd
Bit 14 = DN Aux 11 Cmd
Bit 15 = DN Aux 12 Cmd
0 65535
2001 (W) RESET COMMAND
Bit 0 = Trip Reset
Bit 1 = Set to Defaults
Bit 2 = Reset Stat Data
Bit 3 = Reset Hist Data
Bit 4 = Reset Comm Cntr
Bit 5 = Reset MOT Data
Bit 6 = Reserved
Bit 7 = Reserved
0255
Relay Elements
2100 (R) FAST STATUS 0
Bit 0 = Faulted (OUT 103)
Bit 1 = Warning
Bit 2 = IN101 Status
Bit 3 = IN102 Status
Bit 4 = IN401 Status
Bit 5 = IN402 Status
Bit 6 = IN403 Status
Bit 7 = Starting
Bit 8 = OUT101 Status
Bit 9 = OUT102 Status
Bit 10 = OUT401 Status
Bit 11 = OUT402 Status
Bit 12 = OUT403 Status
Bit 13 = OUT404 Status
Bit 14 = Running
Bit 15 = Stopped
0 65535
Table D.23 Modbus Register Map
a
(Sheet 21 of 26)
Address
b
(Hex) Name/Enums
c
Units
Range
Scale
Fa c tor
DeviceNet
Parameter
Number
Low High Step
Courtesy of NationalSwitchgear.com
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