Schweitzer Engineering Laboratories SEL-749M - Page 254

D.20
SEL-749M Relay Instruction Manual Date Code 20080918
Modbus RTU Communications Protocol
Modbus Register Map
Underpower Settings
009B (RW) UP TRIP ENABLE
0 = N
1 = Y
01 1 255
009C (RW) UP TRIP LEVEL kW 1 25000 1 1 256
009D (RW) UP TRIP DELAY s 0 240 1 1 257
009E (RW) UP WARN ENABLE
0 = N
1 = Y
01 1 258
009F (RW) UP WARN LEVEL kW 1 25000 1 1 259
00A0 (RW) UP WARN DELAY s 0 240 1 1 260
Power Factor Settings
00A1 (RW) PF LAG TRIP ENABL
0 = N
1 = Y
01 1 261
00A2 (RW) PF LAG TRIP LEVL 5 99 0.01 0.01 262
00A3 (RW) PF LD TRIP ENABL
0 = N
1 = Y
01 1 263
00A4 (RW) PF LD TRIP LEVEL 5 99 0.01 0.01 264
00A5 (RW) PF TRIP DELAY s 0 240 1 1 265
00A6 (RW) PF LAG WARN ENABL
0 = N
1 = Y
01 1 266
00A7 (RW) PF LAG WARN LEVL 5 99 0.01 0.01 267
00A8 (RW) PF LD WARN ENABL
0 = N
1 = Y
01 1 268
00A9 (RW) PF LD WARN LEVEL 5 99 0.01 0.01 269
00AA (RW) PF WARN DELAY s 0 240 1 1 270
Frequency Settings
00AB (RW) FREQ1 TRIP ENABL
0 = N
1 = Y
01 1 271
00AC (RW) FREQ1 TRIP LEVEL Hz 450 650 0.1 0.1 272
00AD (RW) FREQ1 TRIP DELAY s 0 2400 0.1 0.1 273
00AE (RW) FREQ1 WARN ENABL
0 = N
1 = Y
01 1 274
00AF (RW) FREQ1 WARN LEVEL Hz 450 650 0.1 0.1 275
00B0 (RW) FREQ1 WARN DELAY s 0 2400 0.1 0.1 276
00B1 (RW) FREQ2 TRIP ENABL
0 = N
1 = Y
01 1 277
Table D.23 Modbus Register Map
a
(Sheet 10 of 26)
Address
b
(Hex) Name/Enums
c
Units
Range
Scale
Fa c tor
DeviceNet
Parameter
Number
Low High Step
Courtesy of NationalSwitchgear.com