GE Industrial Solutions EPM4500 Submeter User Manual
Page 65
CHAPTER 4: COMMUNICATIONS
MODBUS MEMORY MAP
EPM 4500 SUB METER – INSTRUCTION MANUAL
4–23
Note
1.
32-bit floating point numbers are as per the IEEE 754-1985 standard.
2.
Registers 0X0063 to 0X025E are all read-only and cannot be modified. They break
down as follows:
•
Registers 0X0064 to 0X0122 are not real-time, but are populated with
stored interval data based on user inputs to registers 0X0040 to 0X0043.
•
Registers 0X0162 to 0X025E are all real-time data registers.
0468*
1128
Meter #8 Phase Angle A
R
degrees
Meter #8 Phase Angle
046A*
1130
Meter #8 Phase-to-Phase Voltage A
R
V
Meter #8 Instantaneous Voltage
046C*
1132
Meter #8 THD Phase B
R
%
Meter #8 Total Harmonic Distortion
046E*
1134
Meter #8 Phase Angle B
R
degrees
Meter #8 Phase Angle
0470*
1136
Meter #8 Phase-to-Phase Voltage B
R
V
Meter #8 Instantaneous Voltage
0472*
1138
Meter #8 THD Phase C
R
%
Meter #8 Total Harmonic Distortion
0474*
1140
Meter #8 Phase Angle C
R
degrees
Meter #8 Phase Angle
0476*
1142
Meter #8 Phase-to-Phase Voltage C
R
V
Meter #8 Instantaneous Voltage
Counters
07D0
2000
Number of phases offset
R
16-bit Unsigned Integer
1, 2, 3, or 24 phases available
07D1
2001
Demand Window Offset
R
16-bit Unsigned Integer
5, 15, or 30 minutes available
07D2
2002
I Multiplier Type Offset
R
16-bit Unsigned Integer
Internal calibration value
07D3
2003
Number of Pulse Counters Offset
R
16-bit Unsigned Integer
Number of external pulse inputs installed
07D4
2004
Overlap Offset
R
16-bit Unsigned Integer
Number of adjacent demand windows that are averaged
to determine peak demand
07D5
2005
Number TOU's Offset
R
16-bit Unsigned Integer
Number of different TOU periods defined in the time-of-
use table
07D6
2006
MDT_M_TABLE_REG_START
R
16-bit Unsigned Integer
07D7
2007
NUM_MDT_M_TABLE_COLUMNS
R
16-bit Unsigned Integer
07D8
2008
NUM_MDT_M_TABLE_REGS
R
16-bit Unsigned Integer
07D9
2009
MDT_M_TABLE_REG_END
R
16-bit Unsigned Integer
* 32-bit floating point register.
+
32-bit long integer - Range: 00000000h to FFFFFFFFh
Table 4–1: Modbus Memory Map (Sheet 15 of 15)
Hex
Addr
Addr
Description
R/W
Units
Notes