Weinzierl KNX RF/TP Coupler 673 secure Specification sheet

© 2021 Weinzierl Engineering GmbH Seite 1/16
Compact KNX RF/TP Coupler KNX Data Security
KNX RF/TP Coupler 673 secure
Operation and installation manual
(Art. # 5188 KNX RF/TP Coupler 673 secure)
Weinzierl Engineering GmbH
Achatz 3
DE-84508 Burgkirchen / Alz
Tel : [phone] / 91 636 –0
[e-mail]
www.weinzierl.de

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Content
1KNX Security ....................................................................................................................3
1.1 KNX Data Security for the device...........................................................................................3
1.2 KNX Data Security for group telegrams .................................................................................3
1.3 Coupler –Function ................................................................................................................4
2Installation and commissioning.........................................................................................5
2.1 KNX Programming mode.......................................................................................................5
2.2 Status display ........................................................................................................................5
2.3 Manual control TP..................................................................................................................6
2.4 Manual control RF .................................................................................................................6
3Factory setting..................................................................................................................6
3.1 Reset to factory settings ........................................................................................................6
4ETS Database ..................................................................................................................7
4.1 ETS-Parameter dialog .........................................................................................................10

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Application
The KNX RF/TP Coupler 673 secure is a KNX radio coupler in compact design. It connects KNX RF
devices of a radio line to the KNX Bus Twisted Pair and optionally supports KNX Data Security.
The device has an extended filter table (main groups 0..31). The coupler supports long frames and is
compatible with the ETS® software from ETS5.
The buttons on the front panel allow you to deactivate the telegram filters for test purposes. The LEDs
indicate operating states and communication errors on the bus.
Power is supplied via the KNX bus.
1 KNX Security
The KNX standard has been extended by KNX Security to protect KNX installations from
unauthorised access. KNX Security reliably prevents both eavesdropping on communication and
manipulation of the installation.
KNX Data Security describes the encryption on telegram level. This means that the telegrams are
encrypted both on the twisted pair bus and via radio.
1.1 KNX Data Security for the device
The KNX RF/TP Coupler 673 secure supports KNX Data Security to protect the device against
unauthorised access from the KNX bus. If the KNX RF/TP coupler is programmed via the KNX bus,
this is done with encrypted telegrams.
Encrypted telegrams are longer than the previously used unencrypted ones. For secure
programming via the bus, it is therefore necessary that the interface used (e.g. USB) and any
line couplers in between support KNX long frames.
1.2 KNX Data Security for group telegrams
Telegrams from the bus or from RF are forwarded or blocked according to the filter settings
(parameters and filter table). It does not matter whether the telegrams are unencrypted or encrypted.
Forwarding is exclusively based on the destination address. The security properties are checked by
the respective recipient.

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1.3 Coupler –Function
KNX RF/TP Coupler 673 secure as line coupler
The physical address of the KNX RF/TP Coupler 673 secure corresponds to the form x.y.0 (x, y:
1..15). Thus the device functions as a line coupler.
The unit functions as a coupler only if its physical address is of the form x.y.0.
The KNX RF/TP Coupler 673 secure has a filter table and thus helps to reduce the bus load. The filter
table supports the extended group address range (main groups 0..31) and is automatically generated
by the ETS.
KNX RF/TP Coupler 673 secure as wireless extension of a KNX line.

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2 Installation and commissioning
Mounting can be recessed in the wall and thus almost "invisible", because the housing has the right
size for mounting in a standard flush-mounted box.
When selecting the mounting location, the range of the radio devices to be connected to the device
must be taken into account. Shielding objects (e.g. metal cabinets) or interfering transmitters (e.g.
computers, electronic transformers, ballasts) near the gateway should be avoided.
The device is connected to the KNX bus by means of a bus terminal. The correct polarity of the
terminal as printed on the device must be observed.
The KNX RF/TP Coupler 673 secure has the following controls and displays:
The device is only supplied via the KNX bus.
2.1 KNX Programming mode
The KNX programming mode is switched on or off via the KNX programming button P ❶ When the
programming mode is active, the programming LED ❷lights up red. When delivered, the coupler
has the individual Address 15.15.0
2.2 Status display
The status LED ❹lights up green, when KNX bus voltage is present. This LED flashes red if the
application is not running, e.g. after an aborted ETS download. If manual operation is active, this is
indicated by an orange light of the status LED ❹.
The LEDs 1-4 ❺indicate TP telegram traffic.
The LEDs 5-8 ❺indicate RF telegram traffic. If RF telegrams from another domain are received, the
status LED ❹also flashes yellow briefly.
❶Button P KNX Prog
❷LED P KNX Prog
❸KNX Bus connection
❹LED S Status
❺LEDs 1-8
❻Button A
❼Button B

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2.3 Manual control TP
Briefly pressing button A ❻activates the manual operation for TP mode.
Briefly pressing again the A button ❻enables/disables the Routing of the group telegrams. This is
indicated by the LEDs 1 and 2 ❺.
Briefly pressing the B button ❼enables/disables the Routing of the individual addressed telegrams
and the broadcast telegrams. This is indicated by LEDs 3 and 4 ❺.
A long press on button A ❻or button B ❼terminates manual operation.
Manual control can be locked in the ETS database.
2.4 Manual control RF
Briefly pressing the B button ❼activates the handset for RF mode.
Briefly pressing the A button ❻enables/disables the Routing of the group telegrams. This is
indicated by the LEDs 5 and 6 ❺.
Briefly pressing the B button ❼enables/disables the Routing of the individual addressed telegrams,
the (system-) broadcast telegrams. This is indicated by the LEDs 7 and 8❺.
A long press on button A❻or button B ❼terminates manual operation.
Manual control can be locked in the ETS database.
3 Factory setting
The following configuration is preset at the factory:
Physical address of the device 15.15.0
Routing TP->RF:
Physically addressed telegrams: Filter
Group telegrams: Filter
Routing RF->TP:
Physically addressed telegrams: Filter
Group telegrams: Filter
3.1 Reset to factory settings
It is possible to reset the device to these factory settings.
Disconnect the KNX bus connection❸from the device
KNX programming button ❶press and hold down
Restore KNX bus connection ❸to the device
Keep the programming button ❶pressed for at least 6 seconds
A short flashing of all LEDs❷, ❹ and ❺ indicates the successful reset to factory settings.

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4 ETS Database
The ETS product database for the device can be downloaded from the Internet at www.weinzierl.de or
from the KNX online catalogue integrated in ETS.
When the first product with KNX Security is inserted into a project, ETS asks for a project password.
This password protects the ETS project against unauthorized access. This password is not a key that
is used for KNX communication. Entering the password can be bypassed with "Cancel", but this is not
recommended for security reasons. Without entering a password any security features cannot be
used within the project.
For each device supporting KNX Security, ETS requires a device certificate. This certificate contains
the serial number of the device and an initial key (FDSK = Factory Default Setup Key).

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The certificate is printed as text on the device. It can also be easily scanned from the printed QR code
using a webcam. The list of all device certificates can be managed in the ETS window Overview -
Projects - Security.
The initial key is needed to get a device up and running safely from the beginning. Even if the ETS
download is recorded by a third party, this third party will not have access to the secured devices
afterwards. During the first secure download, the initial key will be replaced by the ETS through a new
key, which is created for each device individually. This prevents persons or devices that might know
the initial key from accessing the device. The initial key is only reactivated after a master reset. The
serial number in the certificate enables the ETS to assign the correct key to a device during a
download.
By selecting the KNX RF/TP Coupler 673 secure in the tree structure of the Topology View of the ETS
project, the overview "Properties" appears on the right side of the ETS window. In the Properties
menu item "Settings" the device name of the KNX RF/TP Coupler 673 secure can be changed. Here
also the retransmitter mode (repeater mode) of the device can be enabled or disabled. In this mode
the received telegrams are sent again to increase the RF range.

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By marking the radio line with the KNX RF/TP Coupler 673 secure in the tree structure of the topology
view of the ETS project, the property dialog of the line appears on the right hand side of the ETS
window. In the tab "Settings" the domain address of the radio line can be changed.

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4.1 ETS-Parameter dialog
The following parameters can be set with the ETS.
Description
General information about the device is displayed here.
General Settings
Device name (30 characters)
Any name for the KNX RF/TP Coupler 673 secure can be assigned here. The device name should be
meaningful, e.g. "RF coupler ground floor.

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Manual control on the device
Here the duration of the manual control mode is set. On termination, the system automatically returns
to normal operating mode.
The activated manual control can reduce the security of the installation.
Routing TP->RF
Group telegrams
Block: No group telegram is forwarded to the RF line.
Route: All group telegrams are forwarded to the RF line regardless of the filter table.
This setting should only be used for test purposes.
Filter: The filter table is used to decide whether the received group telegram is to be
forwarded to
the RF line.
Individual addressed telegrams
Block: No physically addressed telegram is forwarded to the RF line.
Route: All physically addressed telegrams are forwarded to the RF line.
This setting should only be used for test purposes.
Filter: The destination address is used to check whether the received individual addressed
telegram is forwarded to the RF line.

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System broadcast telegrams
Block: No received system broadcast telegram is sent to the RF line forwarded.
Route: All received System Broadcast telegrams are forwarded to the RF line
Broadcast telegrams
Block: No received broadcast telegram is forwarded to the RF line.
Route: All received broadcast telegrams are forwarded to the RF line.
Acknowledge (ACK) of group telegrams
Always: For received group telegrams (from the TP line) always send an acknowledge.
If routed: For received group telegrams (from the TP line) an acknowledge is sent only
when
telegram is forwarded to the RF line.
Acknowledge (ACK) of individual telegrams
Always: For received individual addressed telegrams (from the TP line) an
acknowledge is always sent.
If routed: For received individual addressed telegrams (from the TP line) an
acknowledge is only sent when telegram is forwarded to the RF line.
Routing RF->TP

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Group telegrams
Block: No group telegram is written to the TP line forwarded.
Route: All group telegrams are forwarded to the TP Line.
This setting should only be used for test purposes.
Filter: The filter table is used to decide whether the received group telegram is
forwarded to the TP line.
Individual addressed telegrams
Block: No physically addressed telegram is forwarded to the TP line.
Route: All physically addressed telegrams are forwarded to the TP line.
This setting should only be used for test purposes.
Filter: The destination address is used to check whether the received individual
addressed telegram is forwarded to the TP line.
System broadcast telegrams
Block: No received System Broadcast telegram is forwarded to the TP line.
Route: All received System Broadcast telegrams are forwarded to the TP line.
Broadcast telegrams
Block: No received broadcast telegram is forwarded to the TP line.
Route: All received broadcast telegrams are forwarded to the TP line.
Management telegrams
Ignore: All management telegrams received and addressed to the coupler
from the RF line are ignored.
In this setting, no access from ETS via the RF medium is possible!
Accept: All management telegrams received and addressed to the coupler
from the RF line are accepted.

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Repetition of group telegrams
Disabled: The forwarded group telegram will be not repeated in case of an error in the
TP line.
Enabled: The forwarded group telegram will be repeated up to three times in case of
error.
Repetition of individual addressed telegrams
Disabled: The forwarded individual addressed telegram will be not repeated in the TP
line in case of an error.
Enabled: The forwarded individual addressed telegram will be repeated up to three times
in
case of error.
Repetition of broadcast telegrams
Disabled: The forwarded broadcast telegram will be not repeated in the TP line in case
of an error.
Enabled: The forwarded broadcast telegram will be repeated up to three times in case
of error.

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Filter table
The filter table is automatically created by ETS. The group addresses of the telegrams to be
forwarded via the coupler are included in the filter table for this purpose. The contents of the filter
table can be displayed via the preview:
Preview of the filter table
The filter table can be extended by manually adding of the group addresses. For this purpose, "Pass
through Line Coupler" must be activated in the properties window of the corresponding group address.
Properties window of a group address.

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ETS5 Database
www.weinzierl.de/en/products/673/ets5
Datasheet
www.weinzierl.de/en/products/673/datasheet
CE Declaration
www.weinzierl.de/en/products/673/ce-declaration
Weinzierl Engineering GmbH
D-84508 Burgkirchen / Alz
Germany
www.weinzierl.de
[e-mail]
2021-11-09
WARNUNG
The device may only be installed and put into operation by
a certified electrician.
The applicable safety and accident prevention regulations
contraceptive instructions must be complied with.
The device must not be opened.
When planning and installing electrical systems, the
relevant guidelines, regulations and provisions of the
respective country must be adhered to.