iSMA CONTROLLI iSMA-B-MG-IP Bedienungsanleitung
www.ismacontrolli.com
DMP260en | 1st Issue rev. 6 | 05/2022
iSMA-B-MG-IP
User Manual
iSMA-B-MG-IP User Manual
www.ismacontrolli.com
DMP260en | 1st Issue rev. 6 | 05/2022
page 2 of 29
Table of Contents
1 Introduction ........................................................................................................................... 4
1.1 Revision History............................................................................................................................. 5
2 Safety Rules............................................................................................................................ 6
3 Technical Specification ........................................................................................................ 7
4 Hardware Specification ....................................................................................................... 8
4.1 Dimensions .................................................................................................................................... 8
4.2 Power Supply................................................................................................................................. 8
4.3 Grounding and Shielding............................................................................................................ 8
4.4 Firmware Version and Device Type (30001) .......................................................................... 9
4.5 Uptime (30012) ............................................................................................................................. 9
4.6 Device Actions (40001)................................................................................................................ 9
4.7 Front Panel...................................................................................................................................10
4.7.1 LED Indicators .......................................................................................................................10
4.8 Default Settings...........................................................................................................................10
4.8.1 Restoring Default Settings.................................................................................................. 11
5 Modbus Gateway................................................................................................................12
5.1 Communication...........................................................................................................................13
5.1.1 RS485 Connection................................................................................................................ 13
5.2 Modbus Settings.........................................................................................................................14
5.2.1 Setting Modbus Address .................................................................................................... 14
5.2.2 Setting Baud Rate ................................................................................................................. 14
5.2.3 Setting Protocol..................................................................................................................... 15
5.3 Modbus Configuration Registers ............................................................................................15
5.3.1 Device Address (30002) ......................................................................................................15
5.3.2 Baud Rate and Protocol (30003).......................................................................................15
5.3.3 Counter of Received Messages (30004)..........................................................................16
5.3.4 Counter of Error Messages (30006)................................................................................. 16
5.3.5 Counter of Sent Messages (30008).................................................................................. 16
5.3.6 Hardware_Version (30130)................................................................................................. 16
5.3.7 MAC_Address (30131) .........................................................................................................16
5.3.8 Device Actions (40001)........................................................................................................ 16
5.3.9 Baud Rate (40136)................................................................................................................ 16
5.3.10 Stop Bits (40137) ..................................................................................................................17
5.3.11 Data Bits (40138) ..................................................................................................................17
5.3.12 Parity Bit (40139) .................................................................................................................. 17
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DMP260en | 1st Issue rev. 6 | 05/2022
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5.3.13 Response Delay Time (40140)...........................................................................................18
6 M-Bus Gateway ...................................................................................................................19
6.1 M-Bus TCP IP Gateway ..............................................................................................................19
6.2 M-Bus UDP IP Gateway .............................................................................................................19
6.3 M-Bus Communication .............................................................................................................20
6.3.1 Connecting Communication Bus......................................................................................20
6.4 M-Bus Settings ............................................................................................................................21
6.4.1 About M-Bus..........................................................................................................................21
6.4.2 M-Bus Addressing ................................................................................................................22
6.5 M-Bus Configuration Registers................................................................................................22
6.5.1 Counter of Received Messages (30015)..........................................................................22
6.5.2 Counter of Sent Messages (30017).................................................................................. 22
6.5.3 Counter of Alarms (30019)................................................................................................. 23
7 iSMA-B-MG-IP WEB Configuration..................................................................................24
7.1 Web Server Access.....................................................................................................................24
7.2 Device Page..................................................................................................................................24
7.3 M-Bus Configuration..................................................................................................................24
7.4 RS485 Configuration..................................................................................................................25
7.5 IP Configuration ..........................................................................................................................26
7.6 Device Management..................................................................................................................27
7.7 Contact..........................................................................................................................................27
8 List of Modbus Registers ..................................................................................................28
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DMP260en | 1st Issue rev. 6 | 05/2022
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1 Introduction
The iSMA-B-MG-IP device (meter gateway) has been created to convert data from
Modbus RTU/ASCII and M-Bus protocols to corresponding TCP IP protocols (Modbus TCP
IP and M-Bus TCP IP) and M-Bus UDP IP protocols. The iSMA-B-MG-IP meter gateway
allows to use one type of these conversions or both at the same time, using the same
Ethernet connection.
The iSMA-B-MG-IP allows to service up to 128 Modbus RTU/ASCII devices with unique
addresses connected to a COM1 port and up to 60 M-Bus meters (with unique
addresses) connected to an M-Bus interface. At the same time the iSMA-B-MG-IP can
manage up to 2 M-Bus UDP IP clients, 4 M-Bus TCP IP clients, 4 Modbus TCP IP clients,
which means it can effectively manage 10 clients.
The figure below shows an example of a system with iSMA-B-MG-IP.
Figure 1. An example of Modbus TCP/IP to RS485 gateway and M-Bus TCP/IP to M-Bus gateway
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1.1 Revision History
Rev. Date Description
1.0 24 Jan 2017 First edition
1.1 14 Dec 2017 Added new Modbus registers: HW version, MAC
address;
Added RS485_BIASING bit in STOP_BITS registers;
Added possibility to deactivate RS485_BIASING in
hardware version 2.5 and newer
Added new elements on built-in web page: HW
version, RS485 biasing;
1.2 26 Oct 2018 Corrections of typing errors in the text
Added imperial unit of measure
1.3 15 Nov 2018 Added M-Bus extended star and tree topology
1.4 11 Feb 2019 Added MBUS BAUD RATE (32-bits) registers
Added MBUS CONNECTION TIMEOUT (32-bits)
registers
1.5 8 Jun 2020 Company data update
M-Bus UDP IP protocol update
Modbus function 0x17 read/write multiple registers
Modbus function 0x2B to read the VENDOR_NAME,
MODEL_NAME, FW_VERSION, HOMEPAGE
Supporting Modbus address 0xFF for communication
with gateway (IP module)
1.6 25 May 2022 Rebranded
Table 1. Revision history
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2 Safety Rules
Improper wiring of the product can damage it and lead to other hazards. Make sure
that the product has been correctly wired before turning the power on.
Before wiring or removing/mounting the product, make sure to turn the power off.
Failure to do so might cause an electric shock.
Do not touch electrically charged parts such as power terminals. Doing so might cause
an electric shock.
Do not disassemble the product. Doing so might cause an electric shock or faulty
operation.
Use the product only within the operating ranges recommended in the specification
(temperature, humidity, voltage, shock, mounting direction, atmosphere, etc.). Failure
to do so might cause a fire or faulty operation.
Firmly tighten the wires to the terminal. Failure to do so might cause a fire.
Avoid installing the product in close proximity to high-power electrical devices and
cables, inductive loads, and switching devices. Proximity of such objects may cause an
uncontrolled interference, resulting in an instable operation of the product.
Proper arrangement of the power and signal cabling affects the operation of the entire
control system. Avoid laying the power and signal wiring in parallel cable trays. It can
cause interferences in monitored and control signals.
It is recommended to power controllers/modules with AC/DC power suppliers. They
provide better and more stable insulation for devices compared to AC/AC transformer
systems, which transmit disturbances and transient phenomena like surges and bursts
to devices. They also isolate products from inductive phenomena from other
transformers and loads.
Power supply systems for the product should be protected by external devices limiting
overvoltage and effects of lightning discharges.
Avoid powering the product and its controlled/monitored devices, especially high
power and inductive loads, from a single power source. Powering devices from a single
power source causes a risk of introducing disturbances from the loads to the control
devices.
If an AC/AC transformer is used to supply control devices, it is strongly recommended
to use a maximum 100 VA Class 2 transformer to avoid unwanted inductive effects,
which are dangerous for devices.
Long monitoring and control lines may cause loops in connection with the shared
power supply, causing disturbances in the operation of devices, including external
communication. It is recommended to use galvanic separators.
To protect signal and communication lines against external electromagnetic
interferences, use properly grounded shielded cables and ferrite beads.
Switching the digital output relays of large (exceeding specification) inductive loads can
cause interference pulses to the electronics installed inside the product. Therefore, it
is recommended to use external relays/contactors, etc. to switch such loads. The use
of controllers with triac outputs also limits similar overvoltage phenomena.
Many cases of disturbances and overvoltage in control systems are generated by
switched, inductive loads supplied by alternating mains voltage (AC 120/230 V). If they
do not have appropriate built-in noise reduction circuits, it is recommended to use
external circuits such as snubbers, varistors, or protection diodes to limit these effects.
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DMP260en | 1st Issue rev. 6 | 05/2022
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3 Technical Specification
Power Supply Voltage 24 V AC/DC ± 20%
Power consumption At 24 V
DC
At 24 V AC
5 W 7.5 VA
RS485 Interface RS485 Up to 128 devices
Communication
protocols
Modbus RTU, Modbus ASCII set by switch
Baud rate From 2400 to 115200 set by switch
Address 0 to 99 set by switch
M-Bus Interface M-Bus Up to 60 devices
Baud rate From 300 to 38400
Ethernet 1 Fast Ethernet IP Interface
Baud rate 10/100 Mb/s
USB USB Mini USB 2.0
Ingress
protection
IP IP40
Temperature Storage -40°C to 85°C (-40°F to 185°F)
Operating -10°C to 50°C (14°F to 122°F)
Humidity Relative 5% to 95%
Connectors Type Removable
Maximum cable size 2.5 mm2(18-12 AWG)
Dimensions Width 110 mm (4.331 in)
Length 37 mm (1.457 in)
Height 62 mm (2.441 in)
Table 2. Technical specification
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DMP260en | 1st Issue rev. 6 | 05/2022
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4 Hardware Specification
4.1 Dimensions
Figure 2. The iSMA-B-MG-IP dimensions
4.2 Power Supply
Figure 3. DC voltage connection
Figure 4. AC voltage connection
4.3 Grounding and Shielding
In most cases controllers are installed in enclosures along with other devices, which
generate electromagnetic radiation (for example, relays, contactors, transformers, motor
invertors, etc.). Such electromagnetic radiation can induce electrical noise into both
power and signal lines, as well as direct radiation into the controller, causing negative
effects on the system. For this reason, an appropriate grounding, shielding, and other
protective steps should be taken at the installation stage to prevent negative
electromagnetic radiation effects, for example:
control cabinet grounding;
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DMP260en | 1st Issue rev. 6 | 05/2022
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cable shield grounding;
using protective elements for electromagnetic switching devices;
proper wiring;
consideration of cable types and their cross sections;
and other.
4.4 Firmware Version and Device Type (30001)
The type and firmware version of device are encoded in the 30001 Modbus register.
Low byte contains information about the type of device. In case of iSMA-B-MG-IP it is 5910
(0x3B16).
High byte contains the device firmware version multiplied by 10.
For example:
In the 30001 register the number is 1511410 = 0x3B0A16. It means that it is a iSMA-B-MG-
IP device (0x3B) with firmware in version 1.0 (0x0A16 = 1010).
4.5 Uptime (30012)
This 32-bits register contains information about uptime (in seconds). The value is reset
after a power cycle.
4.6 Device Actions (40001)
Setting the 40001 register according to the table below enables 1 of 3 available actions:
reset device, reload settings, and set to default.
Value [dec] Value [hex] Action
511 0x01FF Reset
767 0x02FF Reload settings
1023 0x03FF Set to default
Table 3. Device actions
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DMP260en | 1st Issue rev. 6 | 05/2022
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4.7 Front Panel
4.7.1 LED Indicators
Figure 5. The iSMA-B-MG-IP LED indicators
The power LED (ON) is on (green) if the device is running properly.
The communication M-BUS LED is on (green) for 20 ms after sending each message by
the M-Bus bus. If the device receives/sends a lot of messages, the LED can be lit
continuously.
The communication COM1 LED is on (orange) for 20 ms after sending each message
by the RS485 port. If the device receives/sends a lot of messages, the LED can be lit
continuously.
The communication ETH1 LED is on (orange) for 20 ms after sending each message by
the Ethernet. If the device receives/sends a lot of messages, the LED can be lit
continuously
The ALM LED is ON (green) if an overload is detected on the M-Bus bus (current on the
M-Bus bus exceeds 130 mA).
4.8 Default Settings
Out-of-the-box device, as well as after restoring default values procedure, has the
following default registers values:
Register Name Default Value
BAUD RATE 115200 (115200 bps)
STOP BITS 1
DATA BITS 8
PARITY BITS 0
RESPONSE DELAY 0
USERNAME platform
PASSWORD 1000
IP ADDRESS 192.168.1.123
MASK 255.255.255.0
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