Eastron DCM230 User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: 0086-573-83698881 83698882 Fax: 0086-573-83698883
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web:
Email: [email protected]
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PART 3
Modbus Protocol
Input registers are used to indicate the present values of the measured and calculated electrical quantities.
Each parameter is held in two consecutive16 bit register. The following table details the 3X register address,
and the values of the address bytes within the message. A (*) in the column indicates that the parameter
is valid for the particular wiring system. Any parameter with a cross(X) will return the value zero. Each
parameter is held in the 3X registers. Modbus Protocol function code 04 is used to access all parameters.
For example, to request: Amps 1 Start address=0006
No. of registers =0002
Amps 2 Start address=0008
No. of registers=0002
Each request for data must be restricted to 40 parameters or less. Exceeding the 40 parameter limit will cause
a Modbus Protocol exception code to be returned.
Address
(Register
)
DCM230 Input Register
Parameter
Modbus
Protocol Start
Address Hex
Description
Length
(bytes)
Data
Format
Units
Hi
Byte
Lo
Byte
30001
Line to neutral volts.
4
Float
V
00
00
30007
Current.
4
Float
A
00
06
30013
Active power.
4
Float
W
00
0C
30073
Import active energy
4
Float
kWh
00
48
30075
Export active energy
4
Float
kWh
00
4A
30085
Total system power demand
4
Float
W
00
54
30087
Maximum total system power demand
4
Float
W
00
56
30343
Total active energy
4
Float
kWh
01
56
30385
Resettable partial kWh
4
Float
kWh
01
80
34877
Total active Energy Rate 1
4
Float
kWh
13
0C
34879
Total active Energy Rate 2
4
Float
kWh
13
0E
34881
Total active Energy Rate 3
4
Float
kWh
13
10
34883
Total active Energy Rate 4
4
Float
kWh
13
12
34885
Import active Energy Rate 1
4
Float
kWh
13
14
34887
Import active Energy Rate 2
4
Float
kWh
13
16
34889
Import active Energy Rate3
4
Float
kWh
13
18
34891
Import active Energy Rate 4
4
Float
kWh
13
1A
34893
Export active Energy Rate 1
4
Float
kWh
13
1C
34895
Export active Energy Rate 2
4
Float
kWh
13
1E
34897
Export active Energy Rate 3
4
Float
kWh
13
20
34899
Export active Energy Rate 4
4
Float
kWh
13
22
38193
Total Last 1 month active Energy
(Total
、
Rate1
、
Rate2
、
Rate3
、
Rate4)
20
Float
kWh
20
00