Sel 551 - Page 252

G.16
SEL-551 Relay Instruction Manual Date Code 20110408
Modbus RTU Communications Protocol
Modbus RTU Communications Protocol
004C Enable status
b
0 = relay enabled,
2 = relay disabled
–––––
004D–004F Reserved
Demand Meter
0050 Demand current
phase A
b
Amps 0 65535 1 1
0051 Demand current
phase B
b
Amps 0 65535 1 1
0052 Demand current
phase C
b
Amps 0 65535 1 1
0053 Demand current I
N
b
Amps 0 65535 1 1
0054 Demand residual
current I
G
b
Amps 0 65535 1 1
0055 Demand negative-
sequence current 3I
2
b
Amps 0 65535 1 1
Last Reset Time and Date—Demand Metering
0056 Time ss 0 59 1 1
0057 mm 0 59 1 1
0058 hh 0 23 1 1
0059 Date dd 1 31 1 1
005A mm 1 12 1 1
005B yyyy 1992 2999 1 1
Peak Demand Meter
005C Peak demand
current phase A
b
Amps 0 65535 1 1
005D Peak demand
current phase B
b
Amps 0 65535 1 1
005E Peak demand
current phase C
b
Amps 0 65535 1 1
005F Peak demand
neutral current I
N
b
Amps 0 65535 1 1
0060 Peak demand
residual current I
G
b
Amps 0 65535 1 1
0061 Peak demand
negative-sequence
current 3I
2
b
Amps 0 65535 1 1
Last Reset Time and Date—Peak Demand Metering
0062 Time ss 0 59 1 1
0063 mm 0 59 1 1
0064 hh 0 23 1 1
0065 Date dd 1 31 1 1
0066 mm 1 12 1 1
0067 yyyy 1992 2999 1 1
Table G.18 Modbus Map (Sheet 4 of 15)
Address
(Hex)
Field Units
Range
Scale
Factor
Low High Step