U
SER’S
M
ANUAL
Gateway DLMS-MODBUS for CEWE Prometer
reading of INSTANT VALUES
P/N: GW-DLMS-CEWE-INST
Edition 2.0
MARCOM SRL
Phone +390458204747
Email: info@marcomweb.it
Via Mezzacampagna 52 (int. 29)
www.marcomweb.it
Revision Sheet
User’s Manual GW-DLMS-CEWE-INST Page i
Revision Sheet
Release
No.
Date
Revision Description
Rev. 0 10/05/14 User’s Manual Template and Checklist
Rev. 1 25/10/17 Conversion to new format
Rev. 2 19/04/18 Updated info
User’s Manual GW-DLMS-CEWE-INST Page ii
USER'S MANUAL
TABLE OF CONTENTS
Page #
1.0 GENERAL INFORMATION ..................................................................................................... 1
1.1 System Overview ................................................................................................................... 1
1.2 Features ................................................................................................................................. 2
1.2.1 Connections ........................................................................................................................................... 2
1.2.2 Digital Input connection ........................................................................................................................ 2
1.2.3 Serial port connections ........................................................................................................................... 3
1.2.4 RS232-RS232 cable schema for optical probe ....................................................................................... 3
2.0 CONFIGURATION AND MODBUS MAP ................................................................................ 4
2.1 Web Visualization ................................................................................................................. 4
2.2 Communication with energy meter ...................................................................................... 5
2.3 Gateway Settings ................................................................................................................... 5
2.4 Modbus Mapping Area ......................................................................................................... 7
3.0 MECHANICAL FEATURES ................................................................................................... 10
1.0 General Information
User’s Manual GW-DLMS- CEWE-INST Page 1
1.0 GENERAL INFORMATION
1.1 System Overview
DLMS (Device Language Message Specification) Protocol is used in meters field and specifically in
electric Energy meter to readout consumption and other values. The reference standard is EC 62056.
This standard defines services which permit to read objects, OBIS defined. Inside these objects are
mapped running meter values using standard profiles.
By Gateway DLMS-MODBUS is possible to read DLMS energy meter’s data using MODBUS RTU or
MODBUS TCP protocol. The gateway is completely transparent to DLMS protocol, so user must know
only Modbus protocol.
This Gateway version reads data from one energy meter through the RS232 port or RS485 port or
with optical probe and provides value on MODBUS RTU slave and on an Ethernet port Modbus TCP
Server (up to 3 client connections).
1.0 General Information
User’s Manual GW-DLMS- CEWE-INST Page 2
1.2 Features
1.2.1 Connections
Gateway has following communication ports:
• 2 x Serial RS232 ports
• 1 x Serial RS485 port
• 1 x Ethernet port to read Energy meter’s data by client Modbus TCP
• 1 screw connector to supply gateway 10-30 VDC (min. 2 W)
• Front Signal LED for communication diagnostic
• 2 x Digital Input (*)
• 2 x Digital Output (*)
(*) Their status is mapped in Modbus registers.
1.2.2 Digital Input connection
The schema of two digital input/output connection is:
1.0 General Information
User’s Manual GW-DLMS- CEWE-INST Page 3
1.2.3 Serial port connections
The schema of serial ports connections is:
1.2.4 RS232-RS232 cable schema for optical probe
3.0 Communication errros
User’s Manual GW-DLMS- CEWE-INST Page 4
2.0 CONFIGURATION AND MODBUS MAP
2.1 Web Visualization
To view the web pages containing the data read from the counter you need to connect to the network
using the Ethernet RJ45 port available on the gateway. By a web browser, just type the default
address 192.168.0.122.
In case of connection failure ensure that you have on your network card address on a subnet
192.168.0.X.
This brings us to the main screen of the Gateway with the values common to all Meter
3.0 Communication errros
User’s Manual GW-DLMS- CEWE-INST Page 5
From this page, through the links at the top, you can browse web pages that contain the data for the
single Meter or go on the configuration pages of the Gateway (Home PLC).
2.2 Communication with energy meter
In order to activate communication with energy meter user must insert in proper field Serial code
Meter connected the serial number of connected meter.
In case meter does not accept its serial number, please try with 1 to enable generic command.
The confirmation of the changes is recorded using the Submit button.
To make communication with meter working it could be necessary to know the password, depending
on how the meter is configured.
It’s possible to change baudrate of the port connected to meter from Serial port baudrate selection
in case meter works with speed different from 9600 that usually is standard.
Time between readouts can be set from 10 to 3600 seconds.
String debug is useful to understand the communication with meters.
From this page, using the links in the upper part of the page, it’s possible to move on the age with
meter’s data or in the gateway’s configuration page (Home PLC).
Default configuration is: meter connected to COM0 with RS232. It’s possible to modify the used port:
COM0, COM1 (RS232) e COM2 (RS485).
Only for RS232 ports it’s possible to modify the type of connection: RS232 or with optical probe.
Changes are confirmed with Submit button.
With GATEWAY REBOOT/APPLY CHANGES button you can force the gateway to reboot and apply
changes to it.
Modbus RTU for data reading is available on serial ports not used to connect to meter.
2.3 Gateway Settings
To change the gateway settings, such as IP address, you need access to the configuration pages
through the appropriate link (System) in the header of web pages that contain the data read from the
counters.
This brings us to the home screen of the device configuration and clicking on Network Setup, you can
change the network settings of the device.
Credentials to login and modify parameters are: Username = Admin, Password = Admin.
Changes in Hardware Setup and in Network Setup are applied to the gateway after a power reboot.
3.0 Communication errros
User’s Manual GW-DLMS- CEWE-INST Page 6
While going on hardware setup, you can change:
- serial port communication settings for the ports not connected to meter
- MODBUS node number, to communicate with the MODBUS RTU and MODBUS TCP
3.0 Communication errros
User’s Manual GW-DLMS- CEWE-INST Page 7
2.4 Modbus Mapping Area
The data read from the meters are placed in the Holding Register area.
A copy of the values is also present in the 4x20000 holding register area.
Refresh time of the values is approximately 3 seconds.
Modbus addresses in the table are base 1; depending on used Modbus master, sometimes is required
to swap words to read data correctly.
OBIS
INDEX
METER DATA TYPE NOTES
- 4x40000 UINT Digital Input 00
- 4x40001 UINT Digital Input 01
- 4x40002 UINT Digital Output 00
- 4x40003 UINT Digital Output 01
- 4x40008 FLOAT Software version
- 4x40010 UDINT Elapsed time
- 4x40014 DINT Error number
- 4x41024 DINT Serial number
0 4x40016 FLOAT phase voltage L1 (volts)
1 4x40018 FLOAT phase voltage L2
2 4x40020 FLOAT phase voltage L3
3 4x40022 FLOAT main voltage L1-L2 (volts)
4 4x40024 FLOAT main voltage L2-L3
5 4x40026 FLOAT main voltage L3-L1
6 4x40028 FLOAT current L1 (ampere)
7 4x40030 FLOAT current L2
8 4x40032 FLOAT current L3
9 4x40034 FLOAT phase symmetry voltage L1 (rad -Pi...Pi)
10 4x40036 FLOAT phase symmetry voltage L2
11 4x40038 FLOAT phase symmetry voltage L3
12 4x40040 FLOAT phase symmetry current L1 (rad -Pi...Pi)
13 4x40042 FLOAT phase symmetry current L2
14 4x40044 FLOAT phase symmetry current L3
15 4x40046 FLOAT phase angle L1 (rad -Pi...Pi)
16 4x40048 FLOAT phase angle L2
17 4x40050 FLOAT phase angle L3
18 4x40052 FLOAT power factor L1 (0.0...1.0)
19 4x40054 FLOAT power factor L2
20 4x40056 FLOAT power factor L3
21 4x40058 FLOAT active power L1 (W)
22 4x40060 FLOAT active power L2
23 4x40062 FLOAT active power L3
24 4x40064 FLOAT reactive power L1 (var)
25 4x40066 FLOAT reactive power L2
26 4x40068 FLOAT reactive power L3
27 4x40070 FLOAT apparent power L1 (VA)
28 4x40072 FLOAT apparent power L2
29 4x40074 FLOAT apparent power L3
3.0 Communication errros
User’s Manual GW-DLMS- CEWE-INST Page 8
30 4x40076 FLOAT THD voltage L1 (0.0...1.0)
31 4x40078 FLOAT THD voltage L2
32 4x40080 FLOAT THD voltage L3
33 4x40082 FLOAT THD current L1 (0.0...1.0)
34 4x40084 FLOAT THD current L2
35 4x40086 FLOAT THD current L3
36 4x40088 FLOAT total active power (W)
37 4x40090 FLOAT total reactive power (var)
38 4x40092 FLOAT total apparent power (VA)
39 4x40094 FLOAT total power factor (0.0...1.0)
40 4x40096 FLOAT total phase angle (rad -Pi...Pi)
41 4x40098 FLOAT frequency (Hz)
42 4x40100 FLOAT voltage transformer ratio
43 4x40102 FLOAT current transformer ratio
44 4x40104 FLOAT secondary nominal voltage (volt)
45 4x40106 FLOAT secondary nominal current (ampere)
46 4x40108 FLOAT active energy imp. (Wh)
47 4x40110 FLOAT active energy exp.
48 4x40112 FLOAT reactive energy QI (varh)
49 4x40114 FLOAT reactive energy QII
50 4x40116 FLOAT reactive energy QIII
51 4x40118 FLOAT reactive energy QIV
52 4x40120 FLOAT apparent energy imp. (Vah)
53 4x40122 FLOAT apparent energy exp.
54 4x40124 FLOAT reactive energy imp. (varh)
55 4x40126 FLOAT reactive energy exp.
56 4x40128 FLOAT reactive energy ind.
57 4x40130 FLOAT reactive energy cap.
58 4x40132 FLOAT active energy imp. L1 (Wh)
59 4x40134 FLOAT active energy imp. L2
60 4x40136 FLOAT active energy imp. L3
61 4x40138 FLOAT active energy exp. L1
62 4x40140 FLOAT active energy exp. L2
63 4x40142 FLOAT active energy exp. L3
64 4x40144 FLOAT active energy imp. (MWh)
65 4x40146 FLOAT active energy exp.
66 4x40148 FLOAT reactive energy QI (Mvarh)
67 4x40150 FLOAT reactive energy QII
68 4x40152 FLOAT reactive energy QIII
69 4x40154 FLOAT reactive energy QIV
70 4x40156 FLOAT apparent energy imp. (MVAh)
71 4x40158 FLOAT apparent energy exp.
72 4x40160 FLOAT reactive energy imp. (Mvarh)
73 4x40162 FLOAT reactive energy exp.
74 4x40164 FLOAT reactive energy ind.
75 4x40166 FLOAT reactive energy cap.
76 4x40168 FLOAT active energy imp. L1 (MWh)
77 4x40170 FLOAT active energy imp. L2
3.0 Communication errros
User’s Manual GW-DLMS- CEWE-INST Page 9
78 4x40172 FLOAT active energy imp. L3
79 4x40174 FLOAT active energy exp. L1
80 4x40176 FLOAT active energy exp. L2
81 4x40178 FLOAT active energy exp. L3
82 4x40180 FLOAT Date YYMMDD
83 4x40182 FLOAT Time HHMMSS
7.0 Mechanical features
User’s Manual GW-DLMS- CEWE-INST Page 10
3.0 MECHANICAL FEATURES
The size of the gateway are the following:
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