Siemens WTV676-HB6035 User manual

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Building Technologies
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Meters and Energy Cost Allocation
M
-bus web server
WTV676
-HB6035
The web server reads out wireless or wired M-bus devices over Ethernet or the
Internet using a browser.
●
Power and connect up to 20 M-bus devices directly to the web server
●
M-bus network: Extend with up to six level converters, each with up to 60 M-bus
devices and/or
●
Extend with up to 23 RF converters, each with up to 500 wireless devices
●
System formation with up to 250 logical M-bus devices and 2,500 wireless devices
●
Local reading with PC/browser over Ethernet
●
Remote reading with PC/browser over the Internet
●
Synco IC-Cloud integration
●
Data logging and evaluation of all connected M-bus devices
●
State and alarm message logging of connected devices
●
Periodic email transmission for data reports
●
Periodic transmission of data reports to a FTP server
●
Email transmission on events and alarms
●
Consumption data, trend data, and alarm management on the cloud
●
Management of multiple web servers on a common Synco IC account

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Use
The M-bus web server reads devices connected directly to the web server, devices
connected to the web server via level converters as well as devices connected to the web
server via RF converters.
Web server can be used:
●Alone with up to 20 directly connected, wired M-bus devices
●As a master on an M-bus network with up to six connected level converters, each with up
to 60 M-bus devices and/or
●As a master on an M-bus network with up to 23 RF converters, each with up to 500 RF
devices
The web server can read out up to 2,500 wireless devices and up to 250 wired devices. It
records the data from the connected M-bus devices, can evaluate the data, and sends email
notifications on events and alarms.
The device storage can save data for a period of max. 10 years (data is read once a day).
A PC/Internet browser reads the data and log files either locally over Ethernet or from
anywhere over the Internet. In addition, the report files can be periodically transmitted with
device data to an email recipient or to an FTP server.
NOTICE
Forgotten password
In the event a password for web server access via an Internet browser is lost, it can no
longer be reset or requested. The web server must be replaced.
An email can be sent on events and alarms.
The web server can be integrated in the Synco IC-Cloud. This permits the periodic upload of
invoicing and trend data as well as alarm messages to the cloud per customized settings as
well as distributing the information to the corresponding customers via email.
The web server has three digital inputs and two digital outputs. The change of state to inputs
or outputs are recorded in the event log and/or per email depending on the configuration.
Both outputs can be manually switched via web operation.
Web server is protected against short circuits and surges.

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Functions
Operating modes
The web server can be used in various ways:
M-bus web server with wired M-bus devices
The web server reads up to 20 directly connected devices
(20 unit M-bus loads).
M-bus web server with level converter
The web server is equipped with additional level converters to extend the system by up to
250 devices (250 M-bus loads).
The web server is operated as the master. Up to 20 M-bus devices can be directly
connected.
The level converters are connected as slaves to the web server. Up to 60 M-bus devices can
be connected to each level converter.
Up to six level converters can be connected to the web server.
A
Web server as master
B
Level converter as slave
M-bus web server for reading wireless devices
The web server is equipped with additional RF converters to extend the system up to 2,500
wireless devices. The communication between the web server and RF converters takes
place over a mesh RF protocol (backbone network).
A minimum of one M-bus web server and one RF converter is required to read out wireless
devices. The backbone RF network can consist of a maximum of 23 RF converters.
Communication between the RF converters and wireless devices takes place over the
wireless M-bus protocol. The RF converter saves the consumption data from the devices in
its environment, while forwarding the data to other RF converters, up to the web server (the
other RF converters act as repeaters here).

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500 500
Combined plants
The web server can read up to 250 wired and 2,500 wireless devices.
ABB
C
C
500 500
A
Web server as master
B
Level converter as slave
C
The RF converter as participant on the backbone mesh network and connected to the wireless devices
Readout data
A PC/Internet browser reads the data on all operating modes either locally over Ethernet or
from anywhere over the Internet using a PC/Internet browser.

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Web server integration in Synco IC
The web server activation key is entered on the Synco IC-Portal to register the web server
on the cloud. The activation key is available both via web browser as well as on the web
server display.
After registration, invoicing and trend data as well as alarm messages can be periodically
uploaded per settings and distributed to various users.
The Synco IC-Portal is located at: https://www.siemens-syncoic.com/.
Android / iOS /
Windows
Web browser
Synco IC
PC
Email
notification
incl. File
OZW
KNX TP1
OZW
Operating elements and display
Front view
B
A
C
A
Operating elements
B
LED
C
Display

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Operating elements
The operating elements are used to navigate through the web server menu structure.
The device can be commissioned and current data can be viewed directly on the device
without a PC.
Additional operating options are available when accessing via PC/Internet browser.
Install the supplied antenna for the wireless application. The antenna can be connected
either directly or using a cable (recommended). Additional information on installing the
antenna is available in document A6V11157964. See Section Product documentation
[➙ 10].
LED
The LED indicates the operating state of the web server.
Display
Measured data and basic settings are displayed on an LCD display.
Press a navigation button to switch on the display. Access is password protected. The
display switches off automatically to save energy after 20 minutes.
Information is divided into four main menus:
●System info
●Wired devices
●Wireless devices
●Device search
●Settings
Display example

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Technical design
Topologies
Wired M-bus devices
The M-bus permits various network topologies. The M-bus devices and level converters can
be connected with the web server in a line, bus, star, or tree topology (or a combination of
topologies). The same applies to connecting M-bus devices to level converters.
Ring topology is not permitted.
Bus cable polarity is not relevant, simplifying installation.
Line topology
Bus topology
Star topology
Tree topology
WTV676-HB6035
Combination of topologies
WTV676-HB6035

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Ring topology
Wireless M-bus devices
Web server permits wireless read out using various network topologies. The RF converter is
self-organizing and searches for the optimum connection to the web server (mesh network).
RF network topology
5 m 5 m 5 m
5 m 5 m
5m
5 m
5 m
5 m
M-bus wired devices
Address
M-bus uses two types of addresses to recognize devices:
●Primary addressing: Up to 250 primary addresses can be assigned to an M-bus system.
The primary address is normally assigned during device commissioning.
●Secondary addressing: Secondary addressing consists of 8 bytes and permits the
assignment of any number. In the default setting, the secondary address for a device
matches the serial number issued by the device manufacturer. The assignment prevents
address conflicts on the bus.
Bus expansion
Plant type
Maximum
distance
Total cable
length
Cable cross-
section
Number of
devices (slaves)
Max.
transmission rate
Small residential
buildings
350 m 1000 m 0.8 mm2250 9600 baud
Large residential
buildings
350 m 4000 m 0.8 mm2250 2400 baud
64 9600 baud

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Plant type
Maximum
distance
Total cable
length
Cable cross-
section
Number of
devices (slaves)
Max.
transmission rate
Small
developments
1000 m 4000 m 0.8 mm264 2400 baud
Large
developments
3000 m* 5000 m 1.5 mm264 2400 baud
Direct vicinity 5000 m* 7000 m 1.5 mm216 300 baud
Point-to-point
connection
10000 m* 10000 m 1.5 mm21 300 baud
* Shielded cabling required at a distance in excess of 1000 m
(see EN13757-2 appendix E).
Signal specification
M-bus
Condition
Minimum
Typical
Maximum
Measuring unit
Number of unit M-bus loads per
web server
WTV676-HB6035 0 - 20 -
Transfer rate CSegment ≤ 382 nF 300 2400 9600 baud
Bus power WTV676-HB6035 24 40 42 R
Bus current WTV676-HB6035 0 30 mA
Connection terminals
The device has the following connection terminals / LED
A B
C
EGFHI
D
WTV676-HB6035
A
Ethernet connection
B
USB connection (no function)
C
Antenna connection
D
Terminals (4) and (5): Connections
M1 and M2 for M-bus devices and
the following level converters.
Terminals (1), (2) and (3) are not
used.
Do not apply electricity to these
terminals.
E
Terminals (16) and (17): Power
supply AC/DC 24 V
F
Terminals (12) and (13): Relay
connections for digital output 1, max.
AC/DC 30 V
G
Terminals (14) and (15): Relay
connections for digital output 2, max.
AC/DC 30 V
H
Terminals (9), (10), and (11):
Connections for the digital inputs.
Terminal (8): Reference for digital
inputs
I
Terminals (6) and (7) are not used.
Do not apply electricity to these
terminals.

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Type summary
Order information
Description
Order number
Type
M-bus web server S55563-F150 WTV676-HB6035
Equipment combinations
The following products can be used together with the web server:
Description
Order number
Type
M-bus level converter S55563-F145 WTV531-GA5060
RF converter S55563-F149 WTX660-E05060
Product documentation
Topic
Title
Document ID
Device mounting, wiring,
connecting peripheral devices.
M-bus web server mounting instructions A6V10844310
User’s guide M-bus web server WTV676-HB6035
M-bus level converter WTV531-GA5060
RF converter WTX660-E05060
A6V11157985
User’s guide Synco IC: Cloud and remote access for OZW772
and OZW672, cloud access for WTV676
A6V10500249
Mounting Instructions M-bus web server WTV676-HB6035 A6V11157964
Open Source Software OSS Software Declaration A6V10919216
Product inserts
The OSS Software Declaration (English only) as well as mounting instructions in the
following languages are included with the web server:
German, English, French, Dutch, Italian, Finnish, Spanish, Norwegian, Polish, Czech,
Slovakian, Hungarian, Greek, Croatian, Slovenia, Lithuanian, Bulgarian, Turkish.
Related documents such as environmental declarations, CE declarations, etc., can be
downloaded at the following Internet address:
http://siemens.com/bt/download
Notes
Safety
CAUTION
National safety regulations
Failure to comply with national safety regulations may result in personal injury and property
damage.
●Observe national provisions and comply with the appropriate safety regulations.

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Installation
Note on leakage current protection.
Applies to devices with supply output (AC 24 V or mains voltage) such as a triac output or
output to power a field device.
WARNING
No internal line protection for supply lines to external consumers
Risk of fire and injury due to short-circuits!
●Adapt the line diameters as per local regulations to the rated value of the installed fuse.
The technical data must include the appropriate information on internal or external device
protection.
Disposal
The device is considered an electronic device for disposal in accordance
with the European Guidelines and may not be disposed of as domestic
garbage.
●Dispose of the device through channels provided for this purpose.
●Comply with all local and currently applicable laws and regulations.
●Dispose of empty batteries in designated collection points.
Warranty service
Technical data on specific applications are valid only together with Siemens products listed
under "Equipment combinations". Siemens rejects any and all warranties in the event that
third-party products are used.

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Technical data
Power supply
Operating voltage AC/DC 24 V +/- 10 % (SELV)
AC frequency 50/60 Hz
Maximum power consumption 14.5 W, 15 VA
Internal fuse PTC resistance and varistor
Transformer with secondary current limit of max. 10 A or
external secondary current fuse
Non-renewable fuse: Slow to a max. 10 A
Circuit breaker: Max. 13 A, type B, C, D per EN 60898
Battery backup of real-time clock:
Lithium type CR2032 (can be replaced on the plant)
Battery operation: A total of 5 years
Unused: 7 years
Pins (terminal block)
M-bus master (terminals 4 and 5): Connections for M-bus devices
and
Connection for the following level converters
3 digital inputs: Contact sensing:
Voltage: DC 2.2 V
Current at closed contact: 0.4 mA
OFF = Resistance between terminal 8 and
9,10,11 > 6 kΩ
ON = Resistance between terminal 8 and 9,10,11 < 3kΩ
2 digital outputs: Relay with max. contact rating:
●5 A @ AC/DC 30 V (resistive load)
●2 A @ AC/DC 30 V (inductive load cosφ= 0.4)
Insulating strength between relay and electronics:
●1kV AC (SELV-SELV circuits)
External fusing of supply line
●Non-renewable fuse: Slow to a max. 5 A
●Circuit breaker: Max. 6 A, type B, C, D per EN
60898
Interfaces
Ethernet Interface type: 10/1000Base-TX, IEEE 802.3 compatible
Bit rate: Max. 100 Mbps
Recognition: Auto MDI-X
N°1 (1 MAC): ETH: Ethernet port
Field bus. M-bus: Max. 20 devices
Max. number of wireless devices: 2,500
Max. number of wired M-bus devices: 250
M-bus interface Power consumption:
1 M-bus load
Addressing:
Primary or secondary
Baud rate:
300, 2400 or 9600 baud
Max. permissible read-out frequency:
Typically 2 times a day
Protocol:
To EN 13757-2/-3, EN 1434-3
RF protocol backbone to RF converter (mesh network) Frequency band: 868.00…870.00 MHz

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M-bus
Reference standard EN13757-4 Physical and Link Layer (Operating modes:
C, S,T mode) for wireless M-bus
EN13757-3 (Application layer)
Baud rate 300 bps…9600 bps
Max. number of M-bus devices connected directly to the
web server with a cable
20 (unit M-bus loads)
Max. number of level converters on the web server 6
Max. number of wired M-bus devices per level converter 60
Max. number of RF converters on the web server 23
Max. number of wireless devices per RF converter 500
Max. number of readable devices Wired: 380 M-bus loads or 250 logical M-bus devices
Wireless: 2,500 devices
Bus power Min. 24 V
Max. 42 V
Bus supply current Min. 0 mA
Max. 30 mA
Protection against short circuits Yes
Ambient conditions
Operation
as per EN 60721-3-3
Climatic conditions Class 3K5
Temperature -20…+55 °C
Air humidity 5...95 % r.h.
Mechanical conditions Class 3M2 as per EN 60721-3-3
Transportation
as per EN 60721-3-2
Climatic conditions Class 2K3
Temperature -25..+65 °C
Air humidity 5...95 %
Mechanical conditions Class 2M2
Storage
To EN 60721-3-1
Climatic conditions 1K3
Temperature -25 … 65 °C
Air humidity 5...95 % r.h.
Mechanical conditions Class 1M2
Degree of protection
IP class IP20 as per EN 60529
Protection class III as per EN 62368-1
Mounting
Mounting type On 35mm DIN rails (EN60715)

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Standards, guidelines
Product standards EN 62368-1
Information Technology Equipment Safety
Electromagnetic compatibility For residential, commercial, and industrial environments
EU conformity (CE) A5W00034201 *)
Environmental compatibility The product environmental declaration A5W00035027 *)
contains data on environmentally compatible product
design and assessments (RoHS compliance, materials
composition, packaging, environmental benefit,
disposal).
*) Documents can be downloaded at http://siemens.com/bt/download.
External features
Housing materials and colors PC + ASA, RAL 9010 (white)
Dimensions (L x W x H) 110 x 71 x 62 mm
Weight of web server with mounting instructions 0.207 kg

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Dimensions
WTV676-HB6035
110
110
71
●H = 62 mm
●All dimensions in mm

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Issued by
Siemens Switzerland Ltd
Building Technologies Division
International Headquarters
Theilerstrasse 1a
CH-6300 Zug
Tel. [phone]
www.siemens.com/buildingtechnologies
© Siemens Switzerland Ltd, 2017
Technical specifications and availability subject to change without notice.
Document ID A6V11157961_en--_d
Edition 2018-07-24