Schweitzer Engineering Laboratories SEL-751 - Page 773

E.59
Date Code 20170927 Instruction Manual SEL-751 Relay
Modbus RTU Communications
Communications Protocol
Relay Elements
1760–1919 (R) ROW 0–ROW 159 0 255 0 1 1860–2019
1920 (R) Reserved
c
2020
1921–1927 (R) ROW 160–ROW ROW 166 0 255 0 1 2021–2027
1928–1935 (R) Reserved 2028–2035
Control I/O Commands
2000H (W) LOGIC COMMAND 0 65535 0 na
Bit 0 = Breaker Close (CC Bit)
Bit 1 = Breaker Open (OC Bit)
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 DATA 0 1023 0 na
Bit 0 = TRIP (TARGET) RESET
Bit 1 = Reserved
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 = RST BKMON DATA
Bits 11–15 = Reserved
Relay Elements
2100H (R) FAST STATUS 0 0 65535 0 na
Bit 0 = Faulted
Bit 1 = Warning
Bit 2 = IN1/IN101 Status
Bit 3 = IN2/IN102 Status
Bit 4 = IN3/IN401 Status
Bit 5 = IN4/IN402 Status
Bit 6 = IN5/IN403 Status
Bit 7 = Reserved
Bit 8 = AUX1/OUT101 Status
Bit 9 = AUX2/OUT102 Status
Bit 10 = AUX3/OUT401 Status
Bit 11 = AUX4/OUT402 Status
Bit 12 = AUX5/OUT403 Status
Bit 13 = AUX6/OUT404 Status
Bit 14 = Reserved
Bit 15 = Reserved
2101H (R) FAST STATUS 1 0 65535 0 na
Bit 0 = Enabled
Bit 1 = Reserved
Bit 2 = IN6/IN404 Status
Bit 3 = IN7/IN501 Status
Bit 4 = IN8/IN502 Status
Bit 5 = IN9/IN503 Status
Bit 6 = IN10/IN504 Status
Bit 7 = Reserved
Bit 8 = AUX7/OUT501 Status
Bit 9 = AUX8/OUT502 Status
Bit 10 = AUX9/OUT503 Status
Bit 11 = AUX10/OUT504 Status
Bit 12 = OUT405 Status
Bit 13 = OUT406 Status
Bit 14 = OUT407 Status
Bit 15 = OUT408 Status
2102H (R) TRIP STATUS LO na
2103H (R) TRIP STATUS HI na
2104H (R) WARN STATUS LO na
2105H (R) WARN STATUS HI na
2106H (R) AVERAGE CURRENT na
2107H (R) IA CURRENT na
2108H (R) IB CURRENT na
2109H (R) IC CURRENT na
Table E.34 Modbus Register Map
a
(Sheet 35 of 38)
Modbus Register
Address
b
Name/Enums Units Min Max Default
Scale
Fac to r
DeviceNet
Parameter
Numbers