Schweitzer Engineering Laboratories SEL-749M - Page 255

D.21
Date Code 20080918 Instruction Manual SEL-749M Relay
Modbus RTU Communications Protocol
Modbus Register Map
00B2 (RW) FREQ2 TRIP LEVEL Hz 450 650 0.1 0.1 278
00B3 (RW) FREQ2 TRIP DELAY s 0 2400 0.1 0.1 279
00B4 (RW) FREQ2 WARN ENABL
0 = N
1 = Y
01 1 280
00B5 (RW) FREQ2 WARN LEVEL Hz 450 650 0.1 0.1 281
00B6 (RW) FREQ2 WARN DELAY s 0 2400 0.1 0.1 282
Load Control Settings
00B7 (RW) LOAD CONTROL SEL
0 = OFF
1 = CURRENT
2 = POWER
3 = TCU
03 1 283
00B8 (RW) LD CTL UPP ENABL
0 = N
1 = Y
01 1 284
00B9 (RW) LD CTL CUR UPPER xFLA 20 200 0.01 0.01 285
00BA (RW) LD CTL PWR UPPER kW 1 25000 1 1 286
00BB (RW) LD CTL TCU UPPER %TCU 1 99 1 1 287
00BC (RW) LD CTL LOW ENABL
0 = N
1 = Y
01 1 288
00BD (RW) LD CTL CUR LOWER xFLA 20 200 0.01 0.01 289
00BE (RW) LD CTL PWR LOWER kW 1 25000 1 1 290
00BF (RW) LD CTL TCU LOWER %TCU 1 99 1 1 291
Analog Output
00C0 (RW) ANALOG OUT SEL
0 = LOAD_I
1 = %THERM
2 = WDG_RTD
3 = BRG_RTD
4 = PF
5 = PWR_kW
6 = AVG_I
7 = MAX_I
07 1 292
Table D.23 Modbus Register Map
a
(Sheet 11 of 26)
Address
b
(Hex) Name/Enums
c
Units
Range
Scale
Fa c tor
DeviceNet
Parameter
Number
Low High Step
Courtesy of NationalSwitchgear.com