Larsen Toubro (ER300P) data logger - MODBUS registers map


This data is being extracted with the help of the Advanced Serial Data Logger (MODBUS RTU,ASCII) or Advanced TCP/IP Data Logger (MODBUS TCP) software only. It may not applicable for other software titles.

MODBUS offset
Description
Units
Data type
1
Y line voltage
V
word
2
B line voltage
V
word
3
R phase voltage
V
word
4
Y phase voltage
V
word
5
B phase voltage
V
word
6
R phase current
C
word
7
Y phase current
C
word
8
B phase current
C
word
9
Total active power
W
smallint
10
Total reactive power
VAr
smallint
11
Total apparent power
VA
smallint
12
Total power factor
 
smallint
13
Average frequency
 
word
14
Tamper status
 
word
18
Current time format, year, month (BCD)
 
word
19
Current time format, date day (BCD)
 
word
20
Current time format, hour minute (BCD)
 
word
21
Current time: format: second, dummy (BCD)
 
word
22
Cumulative energy, forward
Wh
dword
24
Cumulative energy, reverse
Wh
dword
26
Cumulative energy, forward
VArh
dword
28
Cumulative energy, reverse
VArh
dword
30
Anomaly string (ASCII)
 
dword
32
00:00 hr forward Wh of present day
Wh
dword
34
00:00 hr forward Wh of previous day
Wh
dword
36
00:00 hr reverse Wh of present day
Wh
dword
38
00:00 hr reverse wh of previous day
Wh
dword
40
CT tapping
 
word
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