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B: Modbus Map
Doc# E145721 MM-7
Electro
Industries/GaugeTech
The Leader In Power Monitoring and Smart Grid Solutions
Description
1
Format
Range
6
Units or
Resolution
Comments
#
Reg
Modbus Address
Hex
Decimal
read-only except as noted
9C40 - 9C40 40001 - 40001
System Sanity Indicator
UINT16
0 or 1
none
0 indicates
p
ro
p
er meter o
p
eration
1
9C41 - 9C41 40002 - 40002
Volts A-N
UINT16
2047 to 4095
volts
2047= 0, 4095= +150
1
9C42 - 9C42 40003 - 40003
Volts B-N
UINT16
2047 to 4095
volts
1
9C43 - 9C43 40004 - 40004
Volts C-N
UINT16
2047 to 4095
volts
1
9C44 - 9C44 40005 - 40005
Am
p
s A
UINT16
0 to 4095
am
p
s
0= -10, 2047= 0, 4095= +10
1
9C45 - 9C45 40006 - 40006
Am
p
s B
UINT16
0 to 4095
am
p
s
1
9C46 - 9C46 40007 - 40007
Am
p
s C
UINT16
0 to 4095
am
p
s
1
9C47 - 9C47 40008 - 40008
Watts, 3-Ph total
UINT16
0 to 4095
watts
0= -3000, 2047= 0, 4095= +3000
1
9C48 - 9C48 40009 - 40009
VARs, 3-Ph total
UINT16
0 to 4095
VARs
watts, VARs, VAs =
1
9C49 - 9C49 40010 - 40010
VAs, 3-Ph total
UINT16
2047 to 4095
VAs
3000 * (register - 2047) / 2047
1
9C4A - 9C4A 40011 - 40011
Power Factor, 3-Ph total
UINT16
1047 to 3047
none
1047= -1, 2047= 0, 3047= +1
p
f = (register - 2047) / 1000
1
9C4B - 9C4B 40012 - 40012
Frequency
UINT16
0 to 2730
Hz
0= 45 or less, 2047= 60, 2730= 65 or more
freq = 45 + ((register / 4095) * 30)
1
9C4C - 9C4C 40013 - 40013
Volts A-B
UINT16
2047 to 4095
volts
2047= 0, 4095= +300
1
9C4D - 9C4D 40014 - 40014
Volts B-C
UINT16
2047 to 4095
volts
1
9C4E - 9C4E 40015 - 40015
Volts C-A
UINT16
2047 to 4095
volts
1
9C4F - 9C4F 40016 - 40016
CT numerator
UINT16
1 to 9999
none
1
9C50 - 9C50 40017 - 40017
CT multi
p
lier
UINT16
1, 10, 100
none
1
9C51 - 9C51 40018 - 40018
CT denominator
UINT16
1 or 5
none
1
9C52 - 9C52 40019 - 40019
PT numerator
UINT16
1 to 9999
none
1
9C53 - 9C53 40020 - 40020
PT multi
p
lier
UINT16
1, 10, 100
none
1
9C54 - 9C54 40021 - 40021
PT denominator
UINT16
1 to 9999
none
1
9C55 - 9C56 40022 - 40023
W-hours, Positive
UINT32
0 to 99999999
Wh
p
er energy format
* 5 to 8 digits
2
9C57 - 9C58 40024 - 40025
W-hours, Negative
UINT32
0 to 99999999
Wh
p
er energy format
* decimal
p
oint im
p
lied,
p
er energy format
2
9C59 - 9C5A 40026 - 40027
VAR-hours, Positive
UINT32
0 to 99999999
VARh
p
er energy format
2
9C5B - 9C5C 40028 - 40029
VAR-hours, Negative
UINT32
0 to 99999999
VARh
p
er energy format
2
9C5D - 9C5E 40030 - 40031
VA-hours
UINT32
0 to 99999999
VAh
p
er energy format
* see note 10
2
9C5F - 9C5F 40032 - 40032
Neutral Current
UINT16
0 to 4095
am
p
s
see Am
p
s A/B/C above
1
9C60 - 9CA2 40033 - 40099
Reserved
N/A
N/A
none
67
9CA3 - 9CA3 40100 - 40100
Reset Energy Accumulators
UINT16
p
assword
5
write-only register; always reads as 0
1
Block Size:
100
PT = numerator * multi
p
lier / denominator
am
p
s = 10 * (register - 2047) / 2047
12-Bit Readings Section
12-Bit Block
volts = 150 * (register - 2047) / 2047
volts = 300 * (register - 2047) / 2047
CT = numerator * multi
p
lier / denominator
End of Map
* resolution of digit before decimal
p
oint =
units, kilo, or mega,
p
er energy format
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