E.76
SEL-751A Relay Instruction Manual Date Code 20100129
Modbus RTU Communications
Modbus Register Map
2044 (R/W) ENABLE 3PWR2P 0 1 0 2144
0 = N
1 = Y
2045 (R/W) 3PH PWR ELEM PU VA 2 65000 20000 0.1 2145
2046 (R/W) PWR ELEM TYPE 0 3 2 2146
0 = + WATTS
1 = – WATTS
2 = + VARS
3 = – VARS
2047 (R/W) PWR ELEM DELAY sec 0 2400 0 0.1 2147
2048-2070 (R) Reserved
c
0 0 0 2148-2170
Control I/O Commands
2000H (W) LOGIC COMMAND 0 65535 0 na
Bit 0 = Breaker Close
Bit 1 = Breaker Open
Bit 2 = Reserved
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 = Reserved
2001H (W) RESET COMMAND 0 1023 0 na
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 = Reserved
Bit 6 = Rst Enrgy Data
Bit 7 = Rst Mx/Mn Data
Bit 8 = Rst Demand
Bit 9 = Rst Peak Demand
Bit 10–15 = Reserved
Table E.32 Modbus Register Map
a
(Sheet 51 of 56)
Modbus Register
Address
b
Name/Enums Units Min Max Default
Scale
Facto r
DeviceNet
Parameter
Numbers
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