INDEX

STG Series WMBus (Wireless MBus) Gateway with 2 x 10/100Base-T(x) Ports, 1 x RS232 and 1 x RS485 Serial Ports and/or BPL (Broadband Power Line Link) User Manual

1. About STG Series Wireless Mbus Gateway

STG Series WMBus Gateways are designed for industrial-grade Radio Frequency (RF) communication. STG Series WMBus Gateways are tailored to perform various features such as wide temperature range, wide power input range and several connectivity ports. Thus, STG Series WMBus Gateways are the best choice for smart metering, power utility, telecommunication and all other applications that require industrial Wireless MBus Radio Frequency connectivity.

STG Series which have REDZ Broadband Power Line (BPL) link allows devices to communicate with full transparent TCP/IP standard over Low Voltage power lines and allows easy connection between TCP/IP based terminals without use of extra cables.

 

STG Series WMBus Gateways can create a WMBus RF network and connect Serial and/or ETH based devices with Wireless MBus devices. All communication can be done over Radio Frequency network based on WMBus standard. STG Series WMBus Gateways can act as TCP to WMBus Gateway as TCP Server, TCP to WMBus Gateway as TCP Client or Serial to WMBus Gateway all in one device. Typical applications: Automated Meter reading, Home – Building – Industrial Automation, Wireless Sensors, Telemetry… 

2. Hardware Features

STG Series WMBus Gateways have the versions with and without BPL (Broadband Power Line) Link.

2.1 Features

  • Supports 2 x 10/100Base-T(X) ports
  • Supports Full/Half-Duplex, auto MDI/MDI-X on each port
  • Supports 1 x RS232 and 1 x RS485 Serial Connection up to 921600 Baud
  • Embedded web interface for ease of use
  • REDZ special design, plug and play Server-Client Operating Modes
  • Instant switch between operating modes with buttons
  • Up to 20 client connection in Server Mode
  • DHCP Server Capability
  • Easy to follow Device Status on web interface
  • 868MHz Wireless MBus (WMBus) Radio Frequency (RF) Communication
  • WMBus device mode Configurable (Meter or Other Device)
  • WMBus link mode Configurable (S1, S2, T1, T2, R2, C1, C2…)
  • WMBus Radio Power Level Configurable (-8dBm to 14dBm)
  • Easy to follow WMBus data packages on web interface
  • Black List and White List based WMBus package filter
  • Firmware Upgrade over Web
  • 2 firmware storage capability on same device (1 active only)
  • AC or DC wide range power options
  • Wide operating temperature range from -25 to 70 °C AC and -40 to 85 °C DC power input versions
  • Rugged Metal IP-40 housing design
  • DIN-Rail mounting

2.2 Extra Features for Models with BPL

  • Supports 2 x 10/100Base-T(X) ports + 1 x BPL link
  • Wide range 3 phase AC input
  • Supports up to 30Mbps PHY rate on BPL with Up to 10 hops and 1000 nodes
  • Up to 432 sub-carriers from 2 to 28MHz analog bandwidth
  • Support LDPC-C FEC with 128-bit AES core
  • Plug and play with Master/Slave selection via web interface

 

3. Installation

Each device has a Din-Rail kit on rear panel. The Din-Rail kit helps device to fix on the Din-Rail. Slant the switch and mount the metal spring to Din-Rail.

Then Push the switch toward the Din-Rail until you heard a “click” sound.

4. Front Panel Description

4.1 STG154 & STG254

  1. Standard SMA female Antenna interface, 50 ohm.

  2. Micro USB Console port for LOG in 115200 baud.

    Console Tx and Rx Blinks when data transmission occurs.

  3. WMBus Activity LEDs

    ALIVE: Keeps ON during normal operation.

    WMBus Tx and Rx Blinks when data transmission occurs.

  4. Device Status LEDs

    STATUS: Blinks based on device operation.

    - When TCP line used blinks during no connection and keeps ON after TCP connection.

    - When Serial line used keeps ON.

    Device Tx and Rx Blinks when data transmission occurs.

    SERVER: Keeps ON after selecting Server from REDZ special design, plug and play Server-Client Operating Modes. Keeps OFF if Client operating Mode selected.

  5. ETHERNET Activity LEDs for port 1, 2 and STG device itself. Blinks during ethernet activity.

  6. 5 pin Terminal Block

    RS232: Tx, Rx and GND pins

    RS485: A and B pins

    Can be activated over web interface and baud rate/data type configurable.

  7. 10/100Base-T(X) Ethernet ports

 

4.2 STG655

5. Top Panel Description

5.1 STG154

1. Power Input DC: 5-60V DC. Polarity protected so that the power input can be connected in any direction.

2. Power LED: Turns ON when there is power in device.

3. Reset Buttons

RESET TO SERVER: Resets the device to factory setting as Server from REDZ special design, plug and play.

Server-Client Operating Modes

RESET TO CLIENT: Resets the device to factory setting as Client from REDZ special design, plug and play.

Server-Client Operating Modes

Rest can be done at any time by pushing any of the button for 5 seconds.ce to factory setting as Client from REDZ special design, plug and play Server-Client Operating ModesRest can be done at any time by pushing any of the button for 5 seconds.

5.2 STG254

1. Power Input AC: 90 - 265V AC (100 – 370V DC), 47Hz to 63Hz AC input

2. Power LED: Turns ON when there is power in device.

3. Reset Buttons

RESET TO SERVER: Resets the device to factory setting as Server from REDZ special design, plug and play Server-Client Operating Modes.

RESET TO CLIENT: Resets the device to factory setting as Client from REDZ special design, plug and play Server-Client Operating Modes.

Reset can be done at any time by pushing any of the button for 5 seconds.

 

5.3 STG655

 

1. Power Input AC: 3 phase input, 110V–240V/50-60Hz. It is also ok to connect only single phase to the device such as L1-N connection only.

AC Power supply use L1-N only. Phase 2-3 connections are used to BPL signal transmission.

Best range can be achieved when minimum 2 phases are connected.

2. Power LED: Turns ON when there is power in device.

3. Reset Buttons

RESET TO SERVER: Resets the device to factory setting as Server from REDZ special design, plug and play Server-Client Operating Modes.

RESET TO CLIENT: Resets the device to factory setting as Client from REDZ special design, plug and play Server-Client Operating Modes.

Rest can be done at any time by pushing any of the button for 5 seconds.

 

6. Ethernet Cables

STG Series WMBus Gateways have standard Ethernet ports. According to the link type, the switches use CAT 3, 4, 5, 5e UTP cables to connect to any other network device (PCs, servers, switches, routers, or hubs).

 

6.1 Cable Type and Specifications

Cable Type Max. Length Connector
10BASE-T  Cat. 3, 4, 5 100-ohm UTP 100 m (328 ft) RJ-45
100BASE-TX  Cat. 5 100-ohm UTP UTP 100 m (328 ft) RJ-45

 

6.2 ETH Cable Pin Assignments

With 100BASE-TX/10BASE-T cable, pins 1 - 2 are used for transmitting data and pins 3 - 6 are used for receiving data.

 

Pin Number Description
1 TD+
2 TD-
3 RD+
4 Not Used
5 Not Used
6 RD-
7 Not Used
8 Not Used

 

  CAT5 Based System BPL Link Based System
Media CAT5 Power Line
Bandwidth 100Mbps Up to 30Mbps
Re-Wire Yes No, Using existing Power Line
Span <100m <600m
Multiple Nodes N/A Up to 10 hops/1000 nodes
Encryption Yes, but difficult to configure Yes, Plug & Play
Installment Difficult Easy, simply user power line
Installment Cost High Low
Total Cost High Low

 

8. Serial Cables

STG Series WMBus Gateways have 1 x RS232 and 1 xRS485 port. Serial line can be connected other serial devices such as RTUs, PLCs, energy meters or any other field device.


8.1 RS232 Cable Pin Assignments

  1. Terminal connector for 3 wire Tx-Rx-GND RS232 data transmission
Pin Number Description
1 GND
2 Rx
3 Tx

 

8.2 RS485 Cable Pin Assignments

  1. Terminal Connector for 2 wire RS485 connection and GND ( if needed)
Pin Number Description
1 A
2 B
3 GND (optional)

 

9. Usage Scenarios and Connection Diagrams

Some of the usage scenarios of STG Series WMBus Gateways are described below. Usages are not limited to that examples and user may create their own usage scenario.

9.1 Transmit Received WMBus Packages to Remote or Local Server over TCP/IP

STG Series WMBus Gateways can receive WMBus packages and send them to remote or local server over TCP/IP link. This way WMBus packages of many meters can directly be collected on a remote or local Data Server and that data can be used for other applications.

STG act as TCP Client to WMBus Gateway configured in Client Mode, Server device listening the connections and its IP and port must be configured in STG. WMBus configured to operate in Other Mode to listen WMBus packages and all received WMBus packages from the field devices will be transferred to remote server.

9.2 Transmit Received WMBus Packages to Local or Remote Clients over TCP/IP

STG Series WMBus Gateways can receive WMBUS packages and send them to remote or local clients over TCP/IP link. STG can act as server and up to 20 clients can connect. This way WMBus packages of meters can directly be shared with local or remote devices such as in-home displays.

STG act as TCP Server to WMBus Gateway configured in Server Mode. Field devices can connect to STG device and send WMBus packages. WMBus configured to operate in Meter Mode to send WMBus packages and all received WMBus packages from the connected devices will be transferred field WMBus devices over air.

9.3 Transmit Received WMBus Packages to Local or Remote STG Clients over TCP/IP to Regenerate WMBus packages (Extend WMBus range)

STG Series WMBus Gateways can receive WMBUS packages and send them to remote or local clients over TCP/IP link. STG can act as server and up to 20 clients can connect. This way WMBus packages of meters can directly be shared with local or remote devices such as in-home displays.
STG can act as client and can regenerate the WMBus received over TCP/IP line. STG server can receive WMBus packages and send to STG client over TCP/IP network and WMBus packages can be regenerated on STG client side. This way WMBus range can be extended over TCP/IP network.

 

9.4 Transmit Received WMBus Packages to Local Serial Devices over RS232 or RS485

STG Series WMBus Gateways can receive WMBUS packages and send them to local serial devices over RS232 or RS485 serial connection. This way WMBus packages of many meters can directly be shared with local serial devices and that data can be used for other applications.

STG act as Serial to WMBus Gateway configured in Server Mode and listens WMBus packages. WMBus configured to operate in Other Mode to listen WMBus packages and all received WMBus packages from the field WMBus devices will be transferred to field serial devices.

9.5 Generate WMBus Packages for WMBus Devices over RS232 or RS485

STG Series WMBus Gateways can receive WMBUS messages from local serial devices over RS232 or RS485 serial connection and generate WMBus package based on that messages. This way WMBus packages for WMBus devices can directly be generated by local serial devices over RS232 or RS485.

STG act as Serial to WMBus Gateway configured in Client Mode and listens serial packages. WMBus configured to operate in Meter Mode to be able to send WMBus packages and all received WMBus packages from the field serial devices will be transferred to field WMBus devices.

 

NOTE: Generated message must be encapsulated in HCI protocol.  

HCI protocol:


SOF (Start of Frame): 0xA5
Message Header Field:


Control Field: User may use 0x0 for this part to ignore CRC16 attachment at end
Endpoint ID: It is 0x2
Message ID Field: It is 0x01 for sending data
Length Field: It is the payload length which means data size of framed WMBus package
Example WMBus Message:

Frame in Hex Frame in ASCII
0E 06 23 12 67 45 23 01 01 01 80 54 65
 73 74
..#.gE#...€Te
st

Example encapsulated WMBus Message with HCI protocol: 

Frame in Hex Frame in ASCII
A5 02 01 0E 06 23 12 67 45 23 01 01 01 80 54 65
 73 74
¥‚...#.gE#...€Te
st

 

10. Configuration via WEB Interface

STG Series WMBus Gateways can be configured over web interface.
Device will get IP from DHCP client when connected to a network. User can use discovery tool to see IP of the device.

Once the IP of the device is set, user may login the device by simply typing the Ip address of device.

 

NOTE: STG default firmware runs with DHCP off and expects an IP lease. If user need static IP or prefers DHCP on during start up, additional firmware is available.

 

10.1 Connecting Web Interface

Simply write IP of the device to the http client. Google Chrome is suggested to use. Login screen will pop up.
Default user name: admin
Default password: admin


Main screen of device will appear with following information:

10.2 MENU: Operating Mode

From this menu user may select the operating mode of the device.

  • STG can act for example TCP server and wait for TCP socket connection. This way the received WMBus packages will be transferred to TCP clients. Set “Server Configuration” in this case.
  • If Set to Client Mode STG will connect to a TCP server and expects WMBus packages over TCP. The received data will be transferred to WMBUs Network. Set “Client Configuration” in this case.
  • When serial connection will be preferred and device will act as Serial to RF network gateway, the Operating Mode can keep as Server for default WMBus operating mode as “Other” in order to listen WMBus packages and keep as Client for default WMBus operating mode as “Meter” in order to send WMBus packages.
    “Device Name” field is used to identify device and also used during REDZ special design, plug and play Server-Client Operating Modes.

Once the setting has been changed, “Save Configuration” button will be enabled.

After clicking button system will tell if the settings applied successfully or not.

 

NOTE 1: STG Series WMBus Gateways can keep configuration of 2 different modes in its memory and once the configuration enabled, its already saved settings will be applied. Device can act as Server or Client at a time.

 

NOTE 2: Settings will be applied once the device is rebooted from web interface or repowered manually.

10.3 MENU: Network Settings - Server

From this menu user may change the network settings of the device.

  • User can change TCP Listening port for field devices.
  • User can change TCP Listening port for STG field devices for REDZ special design, plug and play Server-Client Operating Modes.
  • User can select maximum number of clients allowed to connect device.
  • User can activate DHCP server.
  • User can force device to a static IP.

 
Following parameters and static IP settings available for “DHCP Server” setting which is default active for Server operating mode.

Also if the device has Broadband Power Line (BPL) option,

User can select operating mode of BPL either MASTER or NODE.

 

NOTE: Standard firmware of REDZ BPL supports up to 10 hops and 1000 nodes. Only 1 device can be MASTER in same network.

 
Once the setting has been changed, “Save Configuration” button will be enabled.

After clicking button system will tell if the settings applied successfully or not.

NOTE 1: STG Series WMBus Gateways can keep configuration of 2 different modes in its memory and once the configuration enabled, its already saved settings will be applied. Device can act as Server or Client at a time.

 

NOTE 2: Settings will be applied once the device is rebooted from web interface or repowered manually.

 

NOTE 3: If one of the Serial connections is enabled the device will act as Serial to WMBus Gateway and only following menu items will be available.


10.4 MENU: Network Settings - Client

From this menu user may change the network settings of the device.

  • User can select server to apply REDZ special design, plug and play Server-Client Operating Modes or manually enter IP of Server.
  • User can define if the server is REDZ device and supports REDZ special design, plug and play Server-Client Operating Modes.
  • User can change TCP Server Listening port.
  • User can force device to a static IP.

 

 

Following parameters and static IP settings available for “Use Static IP Address” setting:

Also if the device has Broadband Power Line (BPL) option,

User can select operating mode of BPL either MASTER or NODE.

 

 

NOTE: Standard firmware of REDZ BPL supports up to 10 hops and 1000 nodes. Only 1 device can be MASTER in same network. If the device is in client mode, it is suggested to use “NODE” as setting.


Once the setting has been changed, “Save Configuration” button will be enabled.

After clicking button system will tell if the settings applied successfully or not.

NOTE 1: STG Series WMBus Gateways can keep configuration of 2 different modes in its memory and once the configuration enabled, its already saved settings will be applied. Device can act as Server or Client at a time.

 

NOTE 2: Settings will be applied once the device is rebooted from web interface or repowered manually.

 

NOTE 3: If one of the Serial connections is enabled the device will act as Serial to WMBus Gateway and only following menu items will be available.



10.5 MENU: Serial Settings

From this menu user may activate RS232 or RS485 connection. Once serial connection enabled, the device will act as Serial to WMBus Gateway and TCP Server and Client options in Network Settings will be disabled. Yet again web interface with basic network settings will be accessible.

  • User can select to activate RS232 line and can set baud rate and data type for serial line.
  • User can select to activate RS485line and can set baud rate and data type for serial line.

Operating Modes affect the usage of WMBus because of default settings of the device.

  • Select “Server” operating mode to be able to receive data over WMBus network and send to RS232 or RS485.

  • Select “Client” operating mode to receive data over RS232 or RS485 serial line and send to WMBus network.

 

When client mode selected and user generates WMBus messages and sends to WMBus RF network, HCI protocol must be used

HCI protocol:

SOF (Start of Frame): 0xA5
Message Header Field: 

Control Field: User may use 0x0 for this part to ignore CRC16 attachment at end
Endpoint ID: It is 0x2
Message ID Field: It is 0x01 for sending data
Length Field: It is the payload length which means data size of framed WMBus package
Example WMBus Message: 

Frame in Hex Frame in ASCII
0E 06 23 12 67 45 23 01 01 01 80 54 65
 73 74
..#.gE#...€Te
st

Example encapsulated WMBus Message with HCI protocol:

Frame in Hex Frame in ASCII
A5 02 01 0E 06 23 12 67 45 23 01 01 01 80 54 65
 73 74
¥‚...#.gE#...€Te
st

Please contact our company if you need full implementation of protocol including CRC16 calculation.

Here are menu options:

Following settings are available for serial line:

Once the setting has been changed, “Save Configuration” button will be enabled.

After clicking button system will tell if the settings applied successfully or not.

NOTE 1: STG Series WMBus Gateways can keep configuration of 2 different modes in its memory and once the configuration enabled, its already saved settings will be applied. Device can act as Server or Client at a time. Lets say TCP Server enabled in Server operating mode and RS232 serial line enabled in Client operating mode on same device, the device can switch between to settings simply by changing the mode.

 

NOTE 2: Settings will be applied once the device is rebooted from web interface or repowered manually.

 

NOTE 3: This page has same settings both for Server and Client operating modes and only the texts of serial options will differ based on data package direction.

 

In Server Operating Mode the text will be “Send WMBus Messages to RS232”.
In Client Operating mode the text will be “Receive WMBus Messages from RS232”.

 

10.6 MENU: Device Status - Server

From this menu user may monitor device status and statistics based on operating mode of device. The page also helps users to check device health.

 

After clicking “Refresh Status” button, system will reload data only and will not reload page. Button will be disabled during reload for an instance. If timeout occurs during the reload, the button will be enabled again with warning of timeout. In normal operation reload of status data will be done immediately.

NOTE: Connected client list will not be visible if one of the serial line is activated and device is set to act as Serial to WMBus Gateway.

 

10.7 MENU: Device Status - Client

From this menu user may monitor device status and statistics based on operating mode of device. The page also helps users to check device health.

 


After clicking “Refresh Status” button, system will reload data only and will not reload page. Button will be disabled during reload for an instance. If timeout occurs during the reload, the button will be enabled again with warning of timeout. In normal operation reload of status data will be done immediately.

10.8 MENU: WMBus Settings

The Wireless M-Bus protocol stack implemented on STG is compliant the European standard 13757 part 4: "Communication systems for meters and remote reading of meters". It describes the wireless communication of water, heat, electricity and gas meters with data concentrators. For sake of convenience in this manual such meter devices are called "Meter", the communications partner devices like concentrators are called "Other".
From this menu user may change following WMBus RF parameters:

  • Device Mode: Determines if the module operates in Meter (only sends WMBus packages) or Other Mode (receives and sends WMBus packages).
  • Link Mode: Determines one of the following radio link modes: S1, S1-m, S2, T1, T2, R2, C1, C2.
  • Radio Channel: Selectable Radio Channel only for R2 Mode.

Following table shows the RF channel setup. These channels are available in R-Mode for transmissions from Meter to Other devices. The opposite direction is always done in 868.33 MHz (channel 5).

Channel Frequency (MHz)
1 868,09 MHz
2 868,15 MHz
3 868,21 MHz
4 868,27 MHz
5 868,33 MHz
6 868,39 MHz
7 868,45 MHz
8 868,51 MHz
  • Radio Power Level: Radio Output Power from -8dBm to +13dBm 

Following table shows the possible power level setup:

Power Level Tx Power (dBm) Description
0 -8 Minimum Output Power
1 -5  
2 -2  
3 +1  
4 +4  
5 +7  
6 +10  
7 +13 Maximum Output Power
  • Power Saving Mode: Enables the module to enter the low power mode as soon as possible without data interaction.

STG is a compact, ultra low power, bidirectional radio device for the 868 MHz frequency band. STG is optimal suited for use in Smart Metering Applications, which are compliant to EN 13757 part 4.

STG supports all link modes according to EN 13757-4:

  • S (stationary)
  • T (frequent transmit)
  • R (frequent receive)
  • C (compact operation)

These four main modes are divided into further sub-modes for dedicated applications. All modes are available in web interface. Following table gives an overview over all WM-Bus modes and their physical parameters.

Mode Direction Data Rate Coding Frequency Preamble + Synchronization
S1 Meter => Other 32,768 kcps Manchester 868,3 MHz 582 chips
S1-m Meter => Other 32,768 kcps Manchester 868,3 MHz 56 chips
S2 Meter => Other 32,768 kcps Manchester 868,3 MHz 56 chips
  Other => Meter 32,768 kcps Manchester 868,3 MHz 56 chips
T1 Meter => Other 100 kcps 3 out of 6 868,95 MHz 56 chips
T2 Meter => Other 100 kcps 3 out of 6 868,95 MHz 56 chips
  Other => Meter 32,768 kcps Manchester 868,3 MHz 56 chips
R2 Meter => Other 4,8 kcps Manchester 868,03 MHz + n*60 kHz 104 chips
  Other => Meter 4,8 kcps Manchester 868,33 MHz 104 chips
C1 Meter => Other 100 kcps NRZ 868,95 MHz 64 chips
C2 Meter => Other 100 kcps NRZ 868,95 MHz 64 chips
  Other => Meter 50 kcps NRZ 868,525 MHz 64 chips

WM-Bus Mode S: Stationary mode
Mode S1 transmit only, unidirectional, long preamble
Mode S1-m unidirectional, transmission to mobile data collectors, short preamble
Mode S2 bidirectional, short preamble
Operation at 868.3 MHz, chip rate: 32.768 kcps, encoding: "Manchester"
Telegram Format A

WM-Bus Mode T: Frequent transmit mode
Mode T1 unidirectional, frequent operation
Mode T2 bidirectional, frequent operation
Transmission at 868.95 MHz, chip rate: 100 kcps, encoding: "3 out of 6"
Receiving (meter) at 868.3 MHz, chip rate: 32.768 kcps, decoding: "Manchester"
Telegram Format A

WM-Bus Mode R2: Frequent receive mode
Mode R2 bidirectional, meter always available
Transmission at channel 0-9, chip rate: 4.8 kcps, encoding: "Manchester"
Receiving at 868.33 MHz (channel 5), chiprate 4.8 kcps, decoding: "Manchester"
Once a mode is configured the module firmware configures all required physical parameter automatically according to EM 13757-4.
Telegram Format A

WM-Bus Mode C: Compact mode
Mode C1 unidirectional, compact operation
Mode C2 bidirectional, compact operation
Transmission at 868.95 MHz, chip rate: 100 kcps, encoding: "NRZ"
Receiving (meter) at 869,525 MHz, chip rate: 50 kcps, decoding: "NRZ"
Telegram Format A / Telegram Format B

Following table shows the used RF data rates setups. They are configured automatically by the module firmware dependent on the selected Wireless M-Bus mode, the Device Mode and the data direction.

RF Data Rate (kcps) Description
4,8 chip rate, results in a data rate of 2.4 kbps (Manchester coding)
32,768 chip rate, results in a data rate of 16.384 kbps (Manchester coding)
50 chip rate = data rate (NRZ coding)
100 chip rate, results in a data rate of 66.66 kbps (3 out of 6 coding)
chip rate = data rate (NRZ coding)

 

There are two different telegram formats specified in EN13757-4. Telegram Format A and Telegram Format B. The operating modes S, T and R2 use Telegram Format A. The C-mode supports both telegram formats.


Wireless M-Bus Telegram Format A

Every Wireless M-Bus telegram starts with a preamble sequence followed by a synchronization word. The length of these fields is mode-dependent. The implementation is done according to EN13757-4. The postamble contains normally 8 chips. Only for even packet sizes in T mode (Meter) the postamble consists of four chips.

Wireless M-Bus Telegram Format A, Block 1

The first byte of block 1 is the length byte. It describes the number of the following user bytes including C-Field-, M -Field- and A-Field-Data, but without any CRC byte. C-Field, M-Field and A-fields can be pre-configured (and stored in the non-volatile memory with special firmware version). L-Field and CRC-fields are filled by the firmware at transmission.

Wireless M-Bus Telegram Format A, Block 2

Wireless M-Bus Telegram Format A, Block 3 to Block n (optional blocks)

Wireless M-Bus Telegram Format B

Wireless M-Bus Telegram Format B, Block 1

The first byte of block 1 is the length byte. It describes the number of all following bytes including the CRC bytes. The block 1 in Telegram Format B is the same as in Telegram Format A, only the CRC Field is missing.

Wireless M-Bus Telegram Format B, Block 2

Wireless M-Bus Telegram Format B, Block 3 (optional Block)

STG is able to transmit at RF power levels up to +14 dBm with a low current consumption. In receive mode, the maximum current consumption is of WMBus module is less than 19 mA with a sensitivity down to -116 dBm. With a standby current of less than 0.1 μA for module, the STG is optimal suited for battery powered devices while providing an excellent RF performance.

Receiver RF Characteristics:

Parameter Condition Min Typ. Max. Unit
Frequency Range g1 subband 868,0 - 868,6 MHz
g2 subband 868,7 - 869,2 MHz
Modulation Techniques :  2-FSK
Sensitivity BER ≤ 1%
1 kbps, 2-FSK, Deviation: ±30 kHz
  -116   dBm
BER ≤ 1%
4,8 kbps, 2-FSK, Deviation: ±7,2 kHz
  -109   dBm
BER ≤ 1%
10 kbps, 2-FSK, Deviation: ±20 kHz
  -108   dBm
BER ≤ 1%
32,768 kbps, 2-FSK, Deviation: ±80 kHz
  -105   dBm
BER ≤ 1%
100 kbps, 2-FSK, Deviation: ±80 kHz
  -102   dBm
BER ≤ 1%
256 kbps, 2-FSK, Deviation: ±120 kHz
  -98   dBm

Transmitter RF Characteristics:

Parameter Condition Min Typ. Max. Unit
Frequency Range g1 subband 868,0 - 868,6 MHz
g2 subband 868,7 - 869,2 MHz
RF Output Power Depends on power settings +12,5 +13 +4 dBm
RF Data Rate    

4,8

32,768

100

 

kbps

kbps

kbps

Modulation Techniques :  2-FSK
Modulation Deviation     ±4.8..±7.2
±40..±80
  kHz
TX Frequency Variation vs. Temperature -20 to +70°C     ±10  ppm

 

Here are web menu options:

 

Once the setting has been changed, “Save Configuration” button will be enabled.

After clicking button system will tell if the settings applied successfully or not.

NOTE 1: STG Series WMBus Gateways can keep configuration of 2 different modes in its memory and once the configuration enabled, its already saved settings will be applied. Device can act as Server or Client at a time. This way different WMBus settings can be stored in 2 different operating modes.

NOTE 2: Settings will be applied once the device is rebooted from web interface or repowered manually.

NOTE 3: This page has same settings both for Server and Client operating modes.

 

 

10.9 MENU: WMBus Status

From this menu user may monitor WMBus status and package details.
WMBus package will be received from WMBus network and send to TCP/IP or RS232/RS485 serial line when the operating is in Client Mode 
WMBus package will be received from gateway side comes from either TCP/IP or RS232/RS485 serial line and send to WMbus network when the operating is in Client Mode.
The page also helps users to diagnose radio communication health.

 
After clicking “Refresh WMBus Status” button, system will reload data only and will not reload page. Button will be disabled during reload for an instance. If timeout occurs during the reload, the button will be enabled again with warning of timeout. In normal operation reload of status data will be done immediately.

NOTE: This page has same options both for Server and Client operating modes. Only the text for message details will be different.

 

In Server Operating Mode the text will be “Latest Message Received”.
In Client Operating mode the text will be “Latest Message Sent”.

 

10.10 MENU: Security Settings

From this menu user may activate WMBUs RF communication package filter based on White list (accepted packages from Device ID field of WMBus packages) or Black list ( rejected packages from Device ID field of WMBus packages). 
User can get ID of device from “Device Status” menu page.

  • User can select to activate White List and STG device will accept WMBus packages only from the devices with Device ID stated in the list.
  • User can select to activate Black List and STG device will accept all WMBus packages except from the devices with Device ID stated in the list.

 

Following settings are available for any of the list:

In this page user can enter decimal values and page will format it to hexadecimal automatically after cursor is moved out of scope.

 

Once the setting has been changed, “Save Configuration” button will be enabled.

After clicking button system will tell if the settings applied successfully or not.

NOTE 1: STG Series WMBus Gateways can keep configuration of 2 different modes in its memory and once the configuration enabled, its already saved settings will be applied. Device can act as Server or Client at a time. That means users can configure different configuration settings for different operating modes and switch between each other in an instant.

 

NOTE 2: Settings will be applied once the device is rebooted from web interface or repowered manually.

 

NOTE 3: This page has same settings both for Server and Client operating modes.

 

10.11 MENU: Management

From this menu user may change parameters or send command to device.

  • User can change system time. There is no battery inside the device so clock will be lost after a power down and will set to default.

The device restarts itself every 86400 seconds. (Which means every 24 hours.) There are also timeout restart routines in Server mode during listening clients and in Client Mode trying to connect to the server. ( Both preset to 10 minutes which means device will restart system if fails to connect a server in Client mode or a client do not connect in preset time in Server mode.)

  • User can change firmware of device. REDZ STG WMbus Gateways has easy to use firmware capability and system can store 2 firmware at memory. After a firmware change, user can restore back old firmware anytime needed.

After a firmware change old configuration will be used for minor changes. If a major change occurs system will restore to factory default configuration.

  •  User can change the login information.

  • User can change the log level of the device. REDZ STG WMBus Gateways series has micro USB and gives log in 115200 - 8N1 format.
    Any terminal program can be used to listen the LOG over micro USB port of the device which is recognized as Virtual COM port in PC.

  • User can restore to factory settings and force device to reboot. Factory settings restored for Client if the device in Client mode and factory settings are restored for Server if the device in Server mode.



Firmware upgrade is possible only with files that REDZ supplied. Once the file selected, STG shows selected file:

Then “Upload Firmware” button must be clicked. Then user must wait until page shows the result.

This make take few seconds only. Please wait.

Then system will show the firmware date and version and user can reboot that firmware.
 
Typical log for the system is shown below.

NOTE: This page has same settings both for Server and Client operating modes.

 

11. Ordering Information

STG154: 868MHz WMBus gateway, 2x 10/100 T(x) ETH ports, 1 x RS232 & 1 x RS485, 5-60V DC Power Input
STG254: 868MHz WMBus gateway, 2x 10/100 T(x) ETH ports, 1 x RS232 & 1 x RS485, 90 - 265V AC (100 – 370V DC), 47Hz to 63Hz AC Power Input
STG655: 868MHz WMBus based gateway, 2x 10/100 T(x) ETH ports + 1 x BPL (Broadband Power Line) Link, 1 x RS232 & 1 x RS485, 3 Phase AC Power Input, 110V–240V/50-60Hz

12. Product Selection

Model 5-60V DC Power Input 90 - 265V AC (100 – 370V DC), 47Hz to 63Hz AC Power Input 3 Phase AC Power input, 110V–240V/50-60Hz AC Power Input 2 x 10/100 T(x) ETH Ports 1 x RS232 and 1 x RS485 Serial Ports Instant Switch to Client or Server Operating Modes with Button BPL (Broadband Power Line) Link
STG154 X     X X X  
STG254     X   X X X  
STG655       X X X X X

 

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