
CHAPTER 4: MODBUS MEMORY MAP
DATA FORMATS
750/760 FEEDER MANAGEMENT RELAY – COMMUNICATIONS GUIDE
4 - 63
F77
2
ctd.
64
1
C-A Voltage Angle
65
1
Positive Sequence Current Magnitude
66
1
Positive Sequence Current Angle
67
1
Negative Sequence Current Magnitude
68
1
Negative Sequence Current Angle
69
1
Zero Sequence Current Magnitude
70
1
Zero Sequence Current Angle
71
1
Positive Sequence Voltage Magnitude
72
1
Positive Sequence Voltage Angle
73
1
Negative Sequence Voltage Magnitude
74
1
Negative Sequence Voltage Angle
75
1
Zero Sequence Voltage Magnitude
76
1
Zero Sequence Voltage Angle
77
3
Sensitive Ground Current
78
3
Sensitive Ground Current Angle
79
4
Neutral Voltage
80
4
Neutral Voltage Angle
F78
2
Analog Output Minimum / Maximum
The Range, Step Value, and Units for the Analog Output Minimum and Maximum depends upon the
parameter type programmed for the output. The following table shows the format for a given
parameter type:
F79
Setpoint Group
0
Group 1
1
Group 2
2
Group 3
3
Group 4
F80
Edit Setpoint Group
0
Group 1
1
Group 2
2
Group 3
3
Group 4
4
Active Group
F81
Trace Memory / Data Logger Buffer
0
2 x 2048
1
4 x 1024
2
8 x 512
3
16 x 256
Table 4: Data Formats (Sheet 18 of 20)
Type
Value
Description
1 2 3 4 5 6 7 8 9 10 11 12 13
For explanation of footnotes, see notes of end of Table.
PARAMETER
RANGE
STEP
UNITS
All currents
0 to 65535
1
Amps
All voltages
0.00 to 655.35
0.01
kV
% Load to Trip
0 to 2000
1
%
Frequency
20.00 to 65.00
0.01
Hz
all pwr / energy
see
F86
Power Factor
-0.99 to +1.00
0.01
---
Analog Input
0 to 65535
1
units
Fault Location
-1000.0 to +1000.0
0.1
km / mi
Frequency Decay
-10.00 to +10.00
0.01
Hz/s
All Angles
0 to 359
1
° Lag