E.69
Date Code 20100129 Instruction Manual SEL-751A Relay
Modbus RTU Communications
Modbus Register Map
1783 (R) WARN STATUS HI 0 65535 0 1 1883
Bit 0 = RESERVED
Bit 1 = SALARM
Bit 2 = WARNING
Bit 3 = RTD-WIND BEAR
Bit 4 = RTD-OTHER
Bit 5 = RTD-AMBIENT
Bit 6 = UNDERVOLT 27P2
Bit 7 = OVERVOLT 59P2
Bit 8 = FREQUENCY 81D3
Bit 9 = FREQUENCY 81D4
Bit 10 = RESERVED
Bit 11 = RESERVED
Bit 12 = RESERVED
Bit 13 = RESERVED
Bit 14 = RESERVED
Bit 15 = RESERVED
1784–1788 (R) Reserved
c
0 0 0 1884–1888
Communications Counters
1789 (R) NUM MSG RCVD 0 65535 0 1 1889
1790 (R) NUM OTHER MSG 0 65535 0 1 1890
1791 (R) INVALID ADDR 0 65535 0 1 1891
1792 (R) BAD CRC 0 65535 0 1 1892
1793 (R) UART ERROR 0 65535 0 1 1893
1794 (R) ILLEGAL FUNCTION 0 65535 0 1 1894
1795 (R) ILLEGAL REGISTER 0 65535 0 1 1895
1796 (R) ILLEGAL WRITE 0 65535 0 1 1896
1797 (R) BAD PKT FORMAT 0 65535 0 1 1897
1798 (R) BAD PKT LENGTH 0 65535 0 1 1898
1799–1804 (R) Reserved
c
0 0 0 1899–1904
Relay Elements
1805 (R) ROW 0 0 255 0 1 1905
Bit 0 = TO6_LED
Bit 1 = TO5_LED
Bit 2 = T04_LED
Bit 3 = T03_LED
Bit 4 = T02_LED
Bit 5 = T01_LED
Bit 6 = TRIP
Bit 7 = ENABLED
1806 (R) ROW 1 0 255 0 1 1906
Bit 0 = 52A
Bit 1 = *
Bit 2 = ORED51T
Bit 3 = ORDE50T
Bit 4 = *
Bit 5 = 50C1P
Bit 6 = 50B1P
Bit 7 = 50A1P
Table E.32 Modbus Register Map
a
(Sheet 44 of 56)
Modbus Register
Address
b
Name/Enums Units Min Max Default
Scale
Facto r
DeviceNet
Parameter
Numbers
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