IMST 404600 Manual de usuario
IMST GmbH
Carl-Friedrich-Gauß-Str. 2-4, D-47475 Kamp-Lintfort
Wireless M-Bus Range Extender
User Manual
Version 1.6
Document State
final
Date
November 2021
Document ID
4000/40140/0153
© 2021 IMST GmbH - All rights reserved
Wireless M-Bus Range Extender / / User Manual Version 1.6 Page 2 of 29
History
Version Date Comment
1.0 June 2020 Initial Version
1.1 October 2020 Updates with respect to firmware version
1.0
1.2 February 2021 Missing Status Bit 3 for LoRaWAN
Activation Procedure added to Range
Extender Status Information
Chapter Packet Decoding and
Reassembly removed, see AN036 for
further details
1.3 April 2021 Missing LED signal "LoRaWAN activation
successful ( 3 x Green )" in chapter LED
Usage added
1.4 September 2021 Updates with respect to firmware V1.1
Status Message extended by battery
voltage ( Range Extender Status
)Information
New WM-Bus Message upload
including RSSI ( Application Messages
,and LoRaWAN® Ports WM-Bus
)Packet Message with RSSI
1.5 October 2021 Chapter addedDefault Settings
1.6 November 2021 Adjusted technical characteristics
Content
General User Information / Disposal
Safety
Overview
Range Extender Hardware
Initial Setup
Installation
Functional Description
Range Extender Startup
Calendar Events
Real Time Clock Synchronization
Wireless M-Bus Packet Filter
Recording of Wireless M-Bus Packets
Upload of Application Data
LED Usage
Default Settings
Firmware Update
Technical Characteristics
FAQ
Wireless M-Bus Range Extender / / User Manual Version 1.6 Page 3 of 29
General User Information / Disposal
This document has to be treated confidentially. The content must not be published, duplicated or passed to third parties without our express
permission.
Read this documentation attentively before initial operation or use of the Wireless M-Bus Range Extender.
Observe the safety instructions and warnings in this documentation.
Keep the user manual for future reference.
Product Information
Device: Wireless M-Bus Range Extender
Proper use: The Wireless M-Bus Range Extender is a compact and cost-effective device that collects wireless M-Bus messages from utility
meters and forwards them to a LoRaWAN® network.
Order Number: 404600
Manufacturer:
IMST GmbH
Carl-Friedrich-Gauss-Str. 2-4, 47475 Kamp-Lintfort, Germany
Disposal of the Device
Do not dispose this product at the end of its life in the household
waste, but in the designated places for recycling old electrical
equipment.
Do not dispose the battery cell in the household waste, but in the
designated areas for recycling old batteries.
Disclaimer
IMST GmbH points out that all information in this document are given on an “as is” basis. No guarantee, neither explicit nor implicit is given
for the correctness at the time of publication.
IMST GmbH reserves all rights to make corrections, modifications, enhancements, and other changes to its products and services at any
time and to discontinue any product or service without prior notice. It is recommended for customers to refer to the latest relevant information
before placing orders and to verify that such information is current and complete. All products are sold and delivered subject to “General
Terms and Conditions” of IMST GmbH, supplied at the time of order acknowledgment.
IMST GmbH assumes no liability for the use of its products and does not grant any licenses for its patent rights or for any other of its
intellectual property rights or third-party rights. It is the customer’s duty to bear responsibility for compliance of systems or units in which
products from IMST GmbH are integrated with applicable legal regulations. Customers should provide adequate design and operating
safeguards to minimize the risks associated with customer products and applications.
The product is not approved for use in life supporting systems or other systems whose malfunction could result in personal injury to the user.
Customers using the product within such applications do so at their own risk.
Any resale of IMST GmbH products or services with statements different from or beyond the parameters stated by IMST GmbH for that
product/solution or service is not allowed and voids all express and any implied warranties. The limitations on liability in favor of IMST GmbH
shall also affect its employees, executive personnel and bodies in the same way. IMST GmbH is not responsible or liable for any such wrong
statements.
Wireless M-Bus Range Extender / / User Manual Version 1.6 Page 4 of 29
Safety
General
Read this safety information attentively before using and operation of the Wireless M-Bus Range Extender
Do not make any changes to the product. The housing may only be opened for the initial configuration of the Wireless M-Bus Range
Extender and only by qualified specialist personnel. The housing must then be closed again for further operation.
Please do not use the device, if it appears to be damaged.
Battery Instructions
The Wireless M-Bus Range Extender is equipped with a non-rechargeable, 3.6V lithium battery cell with a typical capacitance of 19Ah. The
battery .must be treated as dangerous good
.Please note the following information
Only use the admitted battery cell (see )Technical Characteristics
Battery cells with a nominal voltage of more than 3.6V are not allowed.
Do not recharge the battery cell.
Do not disassemble the battery cell.
Do not heat the battery cell above 100 °C.
Keep batteries away from the reach of children.
Transport Notes
The Wireless M-Bus Range Extender is equipped with a non-rechargeable 3.6V lithium battery cell with a typical capacitance of 19Ah. The
battery must be treated as , UN3091 Class 9.dangerous good
Please note the following information regarding transport of the Wireless M-Bus Range Extender.
Certain transport and packaging regulations must be observed.
Use special packaging (Best case the same package where you received the Wireless M-Bus Range Extender with).
Mark the package with a appropriate sticker regarding the mode of transportation (street, train, ...).
Disconnect the battery cell connector from the power supply connector of the PCB.
Place a protection tape at the battery cell connector to avoid short circuit.
If you are uncertain about the transport please contact the vendor.
Transport within Airplanes is not allowed
Wireless M-Bus Range Extender / / User Manual Version 1.6 Page 5 of 29
Overview
The Wireless M-Bus standard (EN 13757-4) is used in many wireless and smart applications aresensor meter . These meters and sensors
communicating according to defined radio operation modes based on a standard FSK modulation with more or less range to the
corresponding receiving unit.
The LoRa® modulation has become the standard wireless technology for outdoor and indoor applications which require a perfect trade-off
among communication range and battery life. Therefore it is a perfect means to increase the range of wireless communication systems. The
Wireless M-Bus Range Extender in the following referred to as Range Extender combines the two modulation technics and communication
protocol stacks in one single device.
A typical usecase for the Range Extender is the forwarding of Wireless M-Bus messages of a configurable group of sensor / meter devices T.
he Range Extender offers a flexible way to define hourly, daily, weekly or monthly reception windows for sampling of WM-Bus messages and
a large data memory for temporary buffering. Even large WM-Bus messages with maximum payload size can be forwarded within LoRaWAN
radio packets by means of an integrated segmentation & reassembly protocol.
®
Configuration of firmware parameters like LoRaWAN settings, calendar events, packet filters can be easily managed via serial USB link and
®
PC-Tool. Calendar events and packet filters can furthermore be updated over the air.
Figure: Overview
Wireless M-Bus Range Extender / / User Manual Version 1.6 Page 6 of 29
Range Extender Hardware
Figure: Wireless M-Bus Range Extender without cover
Hardware Features
Power Supply via Battery.
Radio module including TRX, µC and additional PCB antenna.
Data memory
User Interface for configuration and signalling
The following explains some hardware features, necessary for the user to power and configure the Range Extender.
Power Supply
Power for the Range Extender is supplied via the 2-pin connector JST B2B-PH-K-S.
Figure: Power Connector
Default power source is one non-rechargeable 3.6V LTC (Lithium-Thionylchlorid, Li-SOCl2) battery cell. It is equipped with a cable and the
2-pin connector JST PHR-2.
Battery Notes
Battery cells with a nominal voltage of more than 3.6V are not allowed.
Do not recharge the battery cell.
Do not disassemble, or heat the battery cell above 100 °C.
Dispose the battery cell only in designated areas for recycling old batteries.
Wireless M-Bus Range Extender / / User Manual Version 1.6 Page 7 of 29
User Interface
Reed Sensor: to be used as magnetic switch with a simple magnet for external user actions, without a need to open the housing.
LED for signalling.
nInternal Reset Butto for manual Reset after configuration of LoRaWAN settings.
®
Interface:Internal Configuration
Serial Configuration Interface (UART):
configuration of calendar events for WM-Bus reception intervals.
configuration of device filtering by Manufacturer ID, Device ID, ... (whitelist).
firmware upload via integrated bootloader (see ).Firmware Update via Bootloader - Old
pin compatible to FTDI's (TTL to USB serial converter cable).TTL-232R-3V3
2 Pin-Header for activating the internal bootloader.
Figure: Configuration Interface
Serial Configuration Interface
Pin Name Type Description
1 GND GND
2 NC - currently not connected
3 NC - currently not connected
4 RxD Input UART receive data input of the radio module
5 TxD Output UART transmit data output of the radio module
6 NC - currently not connected
Wireless M-Bus Range Extender / / User Manual Version 1.6 Page 8 of 29
1.
2.
3.
4.
5.
Initial Setup
The Wirelesss M-Bus Range Extender requires an initial configuration before usage. This configuration can be done by means of a PC-Tool
called which is connected via serial interface to the device.WS Configurator
The configuration includes the following steps:
Setup of LoRaWAN including activation type for Over The Air Activation ( ) or Activation byprotocol parameters
®OTAA
Personalization ( ) and the corresponding keys and identifiersABP
Reset of connected Range Extender
Synchronize the embedded RTC with the local PC time
Setup of calendar events which control the runtime behaviour of this device
Configuration of Wireless M-Bus address parameters for packet filtering
Figure : WS Configurator
For firmware V0.9 it is recommended to perform a reset whenever the LoRaWAN settings have been updated.
®
Do not forget to synchronize the embedded RTC of the Range Extender with the PC time afterwards.
Wireless M-Bus Range Extender / / User Manual Version 1.6 Page 9 of 29
Installation
The Wireless M-Bus Range Extender housing consists of mounting brackets for fastening on a flat surface. Installation height must not be
higher than 2 meters above ground to avoid any risks in case of falling down.
The figure below shows the positions of the LED, the Reed Sensor and especially the integrated PCB antenna.
For optimal RF performance please avoid any metal obstacles near the antenna area.
If possible, avoid to install the module directly next to other radio equipment.
After powering up the Wireless M-Bus Range Extender by connecting the battery cell to the power connector the Range Extender performs
its startup procedure and starts working depending on the current configuration.
Device activation and visualization of internal firmware status can be triggered by a magnet via reed sensor and will be signalized via led
For more details, please read the chapter .Functional Description
Wireless M-Bus Range Extender / / User Manual Version 1.6 Page 10 of 29
Functional Description
The following chapters explain the firmware features in more detail.
Range Extender Startup
Calendar Events
Real Time Clock Synchronization
Wireless M-Bus Packet Filter
Recording of Wireless M-Bus Packets
Upload of Application Data
LED Usage
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