Eastron DCM230 User manual

Eastron DCM230 User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: [e-mail]
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⚫Measures kWh, W, V, A etc.
⚫Bi-directional measurement IMP & EXP
⚫Pulse output
⚫RS485 Modbus
⚫Din rail mounting 35mm
⚫DC shunt connection
⚫Class 1
DCM230 DC Energy Meter
User Manual V1.5
2019

Eastron DCM230 User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: [e-mail]
- 2 -
Introduction
Eastron DCM230 series DC energy meters are designed for measuring and monitoring in DC systems. The din rail DC
energy meters can measure of important DC parameters: Village,. current, power and energy etc. It also support bi-
directional measurement with pulse output. All data in the meter are accessible via RS485 using Modbus RTU. The
meter has two versions working with AC or DC power supply. Input voltage range up to 300, 600, 1000V DC, and
current inputs are flexible with DC shunt and current sensors. The multi-tariff version has a RTC equipped inside, it
can provides multi-tariff information and monthly records.
PART 1 Specification
Model list
General Specifications
Voltage DC Input 5~300V DC, 5~600V DC, 5~1000V DC
Auxiliary Supply 85~300V AC (DCM230-1)
or 9-60V DC (DCM230-2)
DC Shunt Input 75mV (default)
60mV, 45mV (optional)
Current Range 0~2000A
Power consumption ≤ 2W / 5VA
AC voltage withstand 4400V/ 1min
Impulse voltage withstand 6.4kV - 1.2/50µS waveform
Pulse output 1, 10, 100, 1000imp/kWh (default)
Pulse duration 60, 100 (default), 200mS
Pulse output indicate Total kWh/ import kWh/ export kWh

Eastron DCM230 User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: [e-mail]
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Display LCD with backlit
Max. Reading 999999.9kWh
Weight 220g
Standard GB/T 33708-2017
Unit Characteristics
The Unit can measure and display:
⚫voltage
⚫Currents
⚫Power
⚫Active energy imported and exported
Pulse output indicates real-time energy measurement. An RS485 output allows remote monitoring from another
display or a computer.
Shunt Primary Current
The unit can be configured to operate with primary current and secondary input.
Primary current range: 0~2000A.
Second input: 75mV in default, 45mV, 60mV optional
RS485 Output for Modbus RTU
For Modbus RTU, the following RS485 communication parameters can be configured from the Set-up menu:
Baud rate 1200,2400, 4800, 9600,19200 bps
Parity none (default)/odd/even
Stop bits 1 or 2
RS485 network address nnn – 3-digit number, 001 to 247
Modbus™ Word order Hi/Lo byte order is set automatically to normal or reverse. It cannot be configured from
the set-up menu.
Set-up screens are provided for setting up the RS485 port.
Pulse output
The unit provides a pulse output. The constant can be configured to below:
1000 imp/kwh
100 imp/kWh
10 imp/kWh
1 imp/kWh
Pulse width: 200/100(default)/60 ms.
Note: the relationship between pulse constant and CT1
CT1 setting
Default pulse constant
Settable pulse constant
1 – 20
1000 imp/kWh
1000,100,10,1 imp/kWh

Eastron DCM230 User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: [e-mail]
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21 – 200
100 imp/kWh
100,10,1 imp/kWh
201 – 2000
10 imp/kWh
10,1 imp/kWh
*when the CT setting on meter is 2000A, the default pulse constant is 10 imp/kWh and it can be set to 10 imp/kWh
or 1 imp/kWh.
*Over-current alarm: Alarm will happened when the current is over the CT1 value set on the meter. The Alarm LED
will stay solid and the corresponding register value will be changed. The user can read this register through
communication to determine whether an overcurrent alarm has occurred.
The pulse outputs can be set to generate pulses to represent Import kWh/ Export kWh/ total kWh.
The pulse output is passive type, complies with IEC62053-31 Class A.
Environment
Operating temperature -25℃ to +70℃
Reference temperature 23℃±2℃
Relative humidity 0 to 90%, non-condensing
Altitude up to 2000m
Installation category CAT II
Mechanical Environment M1
Electromagnetic environment E2
Degree of pollution 2
Mechanics
Din rail dimensions 36x99x63 (WxHxD) DIN 43880
Mounting DIN rail 35mm
Sealing IP51 (indoor)
Material Self-extinguishing UL94V-0
PART 2 Operation
Initialization Display
When it is powered on, the meter will initialize and do self-checking.

Eastron DCM230 User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: [e-mail]
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Full Screen (stay 2s)
Software Version (stay 2s)
Current Modbus address
(stay 2s)

Eastron DCM230 User Manual
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Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: [e-mail]
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Scroll display
Current baud rate (stay 2s)
Total active energy(kWh)
Total=Import+ Export
Max read: 999999.9 kWh
Buttons function
There are two buttons on the front panel.
>Scroll the display for data checking.
>Changing option at Set-up mode
>Exit the Set-up mode
>Set-up mode entry
>Confirmation
After initialization and self-checking program, the meter displays the measured values. The default page is total
kWh. If the user wants to check other information, please press the scroll button on the front panel.

Eastron DCM230 User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: [e-mail]
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Total active energy(kWh)
Total=Import+ Export
Display format:
5+2 -> 6+1 -> 5+2
99999.99 -> 100000.0 ->
999999.9 -> 00000.00
Partial resettable active
energy
Display format:
5+2 -> 6+1 -> 5+2
99999.99 -> 100000.0 ->
999999.9 -> 00000.00
T1~T4: total kWh
*Multi-tariff version only
Voltage

Eastron DCM230 User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: [e-mail]
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Current
Power
Display format:
<1000 W: XXX W
<1000kW: XXX.XXX kW
For other value: XXXX.XX kW
Pulse constant
CT1 Primary current

Eastron DCM230 User Manual
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Meter address
Baud rate
Parity
Date
*Multi-tariff version only

Eastron DCM230 User Manual
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Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: [e-mail]
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Time
*Multi-tariff version only
Software Version
Set-up Mode
To get into Set-up Mode, the user need press the “Enter” button for 3 second.
Page
Display
Descriptions
1
Password
To get into Set-up mode, it asks a password
confirmation. Default password: 1000
Use and to enter correct password.
2
Keep pressing for 3 second, the current selection
will flash, use and to change the Modbus
address. Options: 1~247
Keep press for 3s to confirm the selection.

Eastron DCM230 User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: [e-mail]
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3
Keep pressing for 3 second, the current selection
will flash, use and to change the Baud rate.
Options: 1.2k, 2.4k,4.8k,9.6k ( default ),19.2k
Keep press for 3s to confirm the selection.
4
Keep pressing for 3 second, the current selection
will flash, use and to change the Parity.
Options: EVEN,ODD,NONE ( default )
5
Keep pressing for 3 second, the current selection
will flash, use and to change the type of
Pulse Output.
Options: total kWh, IMP kWh, EXP kWh
6
Keep pressing for 3 second, the current selection
will flash, use and to change the pulse
constant.
Options: 1000, 100, 10, 1 imp/kWh
*Default pulse constant is related to the CT1 setting
7
Keep pressing for 3 second, the current selection
will flash, use and to change the pulse
width.
Options: 60, 100, 200, unit: ms

Eastron DCM230 User Manual
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8
Use to select the CT1 option. Keep pressing
for 3 second, the current selection will flash, use
and to enter the Primary current. The range
is from 0001 to 2000. For example, if using a 100A/75mV
current transformer, the CT1 shall be 0100.
Keep press for 3s to confirm the selection.
Deafult : 1A
9
Keep pressing for 3 second, the current selection
will flash, use and to change the
DIT(Demand Integration Time).
Options: 0,5,8,10,15,20,30,60( default)
10
Use to select the scroll display time option. Keep
pressing for 3 second, the current selection will
flash, use and to enter the options:
0~60s.
Default: 0 s, represent do not scroll display
11
Use to select the backlit time option. Keep
pressing for 3 second, the current selection will
flash, use and to enter the options:
0,5,10,20,30,60 minutes. 0 means the light is always
on.
Default: 60 minutes

Eastron DCM230 User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: [e-mail]
- 13 -
12
Use to select the Password option. Keep pressing
for 3 second, the current selection will flash, use
and to enter the new password. The
range is from 0001 to 9999.
Default: 1000
13
Shunt wiring
Use to select the shunt connection option. Keep
pressing for 3 second, the current selection will
flash, use to choose the connection way.
Option: N, P
N: Negative type (default)
P: Positive type
14
Use to select the date interface, Keep pressing
for 3 second.
*Multi-tariff version only
14-1
the current selection will flash, use and
to set the correct date information.
*Multi-tariff version only
15
Use to select the time interface, Keep pressing
for 3 second.
*Multi-tariff version only

Eastron DCM230 User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: [e-mail]
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15-1
the current selection will flash, use and
to set the correct time information
*Multi-tariff version only
16
Tariff information ( for view only and cannot be set)
*Multi-tariff version only
16-1
T1 means tariff number
Range from T1-T4
T0 means invalid rate number.
01 means serial number.
Range: 01-08
18:00 mean the starting time of current tariff number.
Keep pressing button to exit the set-up mold.

Eastron DCM230 User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: [e-mail]
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Wiring diagram
Terminal Connection
AC Power Supply:
DC Power Supply:
Shunt Connection
Positive Type:
Negative Type:
Dimensions

Eastron DCM230 User Manual
Zhejiang Eastron Electronic Co.,Ltd. Tel: [phone] 83698882 Fax: [phone]
Address: No.1369 Chengnan Road, Jiaxing, Zhejiang, 314001, China. Web: www.eastron.com.cn Email: [e-mail]
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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

Eastron DCM230 User Manual
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- 17 -
38203
Total Last 2 month active Energy
(Total、Rate1、Rate2、Rate3、Rate4)
20
Float
kWh
20
0A
38213
Total Last 3 month active Energy
(Total、Rate1、Rate2、Rate3、Rate4)
20
Float
kWh
20
14
38223
Total Last4 month active Energy
(Total、Rate1、Rate2、Rate3、Rate4)
20
Float
kWh
20
1E
38233
Total Last 5 month active Energy
(Total、Rate1、Rate2、Rate3、Rate4)
20
Float
kWh
20
28
38243
Total Last 6 month active Energy
(Total、Rate1、Rate2、Rate3、Rate4)
20
Float
kWh
20
32
38253
Total Last 7 month active Energy
(Total、Rate1、Rate2、Rate3、Rate4)
20
Float
kWh
20
3C
38263
Total Last 8 month active Energy
(Total、Rate1、Rate2、Rate3、Rate4)
20
Float
kWh
20
46
38273
Total Last 9month active Energy
(Total、Rate1、Rate2、Rate3、Rate4)
20
Float
kWh
20
50
38283
Total Last 10 month active Energy
(Total、Rate1、Rate2、Rate3、Rate4)
20
Float
kWh
20
5A
38293
Total Last 11 month active Energy
(Total、Rate1、Rate2、Rate3、Rate4)
20
Float
kWh
20
64
38303
Total Last 12 month active Energy
(Total、Rate1、Rate2、Rate3、Rate4)
20
Float
kWh
20
6E
312289
Total Last 1 day active Energy
4
Float
kWh
30
00
312291
Total Last 2 days active Energy
4
Float
kWh
30
02
312293
Total Last 3 days active Energy
4
Float
kWh
30
04
312295
Total Last 4 days active Energy
4
Float
kWh
30
06
312297
Total Last 5 days active Energy
4
Float
kWh
30
08
312299
Total Last 6 days active Energy
4
Float
kWh
30
0A
312301
Total Last 7 days active Energy
4
Float
kWh
30
0C
312303
Total Last 8 days active Energy
4
Float
kWh
30
0E
312305
Total Last 9 days active Energy
4
Float
kWh
30
10
312307
Total Last 10 days active Energy
4
Float
kWh
30
12
312309
Total Last 11 days active Energy
4
Float
kWh
30
14
312311
Total Last 12 days active Energy
4
Float
kWh
30
16
312313
Total Last 13 days active Energy
4
Float
kWh
30
18
312315
Total Last 14 days active Energy
4
Float
kWh
30
1A
312317
Total Last 15 days active Energy
4
Float
kWh
30
1C
312319
Total Last 16 days active Energy
4
Float
kWh
30
1E
312321
Total Last 17 days active Energy
4
Float
kWh
30
20
312323
Total Last 18 days active Energy
4
Float
kWh
30
22
312325
Total Last 19 days active Energy
4
Float
kWh
30
24
312327
Total Last 20 days active Energy
4
Float
kWh
30
26
312329
Total Last 21 days active Energy
4
Float
kWh
30
28

Eastron DCM230 User Manual
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Holding Registers
312331
Total Last 22 days active Energy
4
Float
kWh
30
2A
312333
Total Last 23 days active Energy
4
Float
kWh
30
2C
312335
Total Last 24 days active Energy
4
Float
kWh
30
2E
312337
Total Last 25 days active Energy
4
Float
kWh
30
30
312339
Total Last 26 days active Energy
4
Float
kWh
30
32
312341
Total Last 27 days active Energy
4
Float
kWh
30
34
312343
Total Last 28 days active Energy
4
Float
kWh
30
36
312345
Total Last 29 days active Energy
4
Float
kWh
30
38
312347
Total Last 30 days active Energy
4
Float
kWh
30
3A
30385
Current resettable total active energy
4
Float
kWh
01
80
316385
Line to neutral volts.
4
Float
V
40
00
316387
Current.
4
Float
A
40
02
316389
Active power.
4
Float
W
40
04
316391
Import active energy
4
Float
W
40
06
316393
Emport active energy
4
Float
W
40
08
316395
Total system power demand
4
Float
kWh
40
0A
316397
Maximum total system power demand
4
Float
kWh
40
0C
316399
Total active energy
4
Float
kWh
40
0E
316401
Current resettable total active energy
4
Float
kWh
40
10
316403
Current overload alarm
00 00 means no alarm
00 01 means Current overload alarm
2
Hex
None
40
12
Note:
(1): The method of power demand calculation is: Import- Export. When the import and export powers appear in the demand period,
the import power subtract the export power during data processing.
(2) The red marked are commonly used registers which allow users to read continuously at one time.
(3) The green marked registers are used for Multi-tariff version only
Holding registers are used to store and display instrument configuration settings. All holding registers not listed in the
table below should be considered as reserved for manufacturer use and no attempt should be made to modify their
values.
The holding register parameters may be viewed or changed using the Modbus Protocol. Each parameter is held in two
consecutive 4X registers. Modbus Protocol Function Code 03 is used to read the parameter and Function Code 10 is
used to write. Write to only one parameter per message.

Eastron DCM230 User Manual
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Address
Register
Parameter
Modbus
Protocol
Start Address Hex
Valid range
Mode
High Byte
Low Byte
40003
Demand Period
00
02
Write demand period: 0~60 minutes, default 60.
Setting the period to 0 will cause the demand to
show the current parameter value, and demand
max to show the maximum parameter value
since last demand reset.
Length : 4 byte
Data Format : Float
r/w
40005
Slide time
00
04
Default 1, min.
Range ：1 ~ (Demand Period -1).
Length : 4 byte
Data Format : Float
r/w
40013
Pulse Width
00
0C
Write pulse1 on period in
Milliseconds: 60, 100 or 200, default 100.
Length : 4 byte
Data Format: float
r/w
40019
Network Parity
and Stop
00
12
Write the network port parity/stop bits for
MODBUS Protocol, where:
0 = 1 stop bit and none parity, default.
1 = 1 stop bit and even parity.
2 = 1 stop bit and odd parity.
3 = 2 stop bit and none parity. Requires a restart
to become effective.
Length : 4 byte
Data Format : Float
r/w
40021
Modbus
address
00
14
Write the Modbus address
Address: 1 to 247 for MODBUS Protocol, default
1. Requires a restart to become effective.
Length : 4 byte
Data Format : Float
r/w
40023
Pulse constant
00
16
Options：
0 means 1000 imp/kWh
1 means 100 imp/kWh
2 means 10 imp/kWh
3 means 1 imp/kWh
Length : 4 byte
Data Format: float
r/w
40025
Password
00
18
Write password for access to protected
registers.
Length : 4 byte
Data Format : Float
ro

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- 20 -
40029
Baud Rate
00
1C
Options：
0 means 2400 bps
1 means 4800 bps
2 means 9600 bps
3 means 19200 bps
5 means 1200 bps
Default：2
Length : 4 byte
Data Format: float
r/w
40059
Auto-scroll
display time
00
3A
Range: 0~60s.
0 means no scroll
Default:0
Length : 4 byte
Data Format : Float
r/w
40061
Backlit time
00
3C
Options:0~120 munites
0 means the backlit always on
Default：60
Length : 4byte
Data Format : Float
r/w
40087
Pulse output
type
00
56
Options：
1 means Import active energy
2 means total active energy
4 means Export active energy
Default：2
Length : 4 byte
Data Format: float
r/w
48193
Connection
method of
shunt
20
00
Setting on shunt connection.
Option:
00 4E means Negative type (default)
00 50 means Positive type
Length: 2 byte
Data Format: Hex
r/w
461457
Reset
F0
10
00 00：Reset Maximum Demand
00 03：Reset Partial Energy
Length : 2 byte
Data Format:Hex
wo
463776
Energy
Measurement
model
F9
20
Options：
00 01：Total=Import
00 02：Total=Import+Export
00 03：Total=Export
Length : 2 byte
Data Format: Hex
r/w
461441
Date and Time
F0
00
Data definition:
r/w