Weinzierl KNX IP Interface 740.1 wireless Specification sheet

WEINZIERL ENGINEERING GmbH
Achatz 3-4
84508 Burgkirchen an der Alz
GERMANY
Tel.: +49 8677 / 916 36 –0
E-Mail:[e-mail]
Web: www.weinzierl.de
© 2021 WEINZIERL ENGINEERING GmbH Seite 1/20
Wireless KNX IP interface
KNX IP Interface 740.1 wireless
Operation and installation manual
(Art. # 5419)

© 2021 WEINZIERL ENGINEERING GmbH Seite 2/20
Content
1Application .........................................................................................................................3
2Installation and connection...............................................................................................3
2.1 KNX programming mode......................................................................................................4
2.2 Manual operation and status display....................................................................................4
3Reset to factory default settings.......................................................................................5
3.1 Factory default settings........................................................................................................6
4Wiring scheme ...................................................................................................................6
4.1 Pluggable screw terminal.....................................................................................................6
4.2 Pin assignment ....................................................................................................................6
5Setting up a Wi-Fi connection...........................................................................................7
5.1 KNX IP Interface 740.1 wireless is “Access point”................................................................7
5.2 KNX IP Interface 740.1 wireless is “Station / Client Mode” ...................................................9
6Interface settings in the ETS.............................................................................................9
6.1 ETS 5...................................................................................................................................9
6.2 ETS 6.................................................................................................................................10
6.3 Common............................................................................................................................11
7Programming....................................................................................................................12
7.1 Via the KNX bus.................................................................................................................12
7.2 Via KNXnet/IP tunneling.....................................................................................................12
8ETS database ...................................................................................................................13
8.1 Additional individual addresses.......................................................................................... 13
8.2 IP settings..........................................................................................................................14
8.3 Description.........................................................................................................................16
8.4 General settings.................................................................................................................17
8.5 Operating mode “Access point”..........................................................................................18
8.6 Operating mode “Station / Client-Mode”.............................................................................19

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1 Application
The KNX IP Interface 740.1 wireless serves as a wireless interface to the KNX bus based on Wi-Fi.
The device can be used as a programming interface for the ETS® and is a wireless alternative to
USB or wired IP interfaces. The bus access via Wi-Fi allows the installer to move freely in the
building with his laptop to a large extent.
The KNX IP Interface 740.1 wireless has an integrated Wi-Fi access point to which the laptop can
connect. Alternatively, the device can be connected to an existing Wi-Fi in client mode, the
connection can be made via WPS (Wi-Fi Protected Setup).
The device supports the security standard WPA2.
Power is supplied via the KNX bus.
The device works according to the KNXnet/IP specification. It can be used with the ETS® from
version 5.
2 Installation and connection
The housing of the KNX IP Interface 740.1 wireless has the dimensions 125 x 67 x 31 mm
(L x W x H). It features the following controls and displays:
❶Antenna
❷LED Run (green)
❸LED WiFi (green)
❹LED KNX (green)
❺Button Test
❻Button Prog. Mode
❼Programming LED
❽KNX bus connector
If the bus voltage is missing, the device is without function.

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2.1 KNX programming mode
The KNX programming mode is activated/deactivated by pressing the KNX programming button
❻. When programming mode is active, the programming LED ❼lights up red.
2.2 Manual operation and status display
Summary of the states of the programming LED ❼:
Pressing the button Test ❺briefly switches between normal operating mode and test mode. The
active mode is indicated by the LED Run ❷lighting up or flashing slowly in green.
Summary of the states of the LED Run ❷:
2.2.1 Normal operating mode
The LED WiFi ❸lights up green when a Wi-Fi connection is available. If this LED flickers,
telegram traffic is taking place via Wi-Fi. If this LED flashes slowly in green, the device is not
connected via Wi-Fi.
Pressing and holding the button Test ❺executes WPS (Wi-Fi Protected Setup). This is indicated
by the LED WiFi ❸flashing fast in green.
Summary of the states of the LED WiFi ❸:
LED Status
Meaning
LED lights red
The programming mode is active.
LED flashes red (fast)
The programming mode is not active.
The device is not loaded correctly, e.g. after aborting a download.
LED Status
Meaning
LED lights green
The device operates in normal operating mode.
LED flashes green (slowly)
The device is in test mode.
LED flashes green (fast)
The device is currently loaded by the ETS.
LED Status
Meaning
LED lights green
The device is connected via Wi-Fi.
LED flashes green (slowly)
The device is not connected via Wi-Fi.
LED flashes green (fast)
WPS is in progress.
LED flickers green
Telegram traffic via Wi-Fi.

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The LED KNX ❹lights up green when KNX bus voltage is present. If this LED flickers, telegram
traffic is taking place on the KNX bus.
Summary of the states of the LED KNX ❹:
2.2.2 Test mode
In test mode, the Wi-Fi channel can be changed and the connection status of the tunneling
connection can be displayed.
If many participants are using the same Wi-Fi channel, switching to a less heavily used channel
can improve the connection quality:
Pressing and holding the button Test ❺switches through the Wi-Fi channels. This is indicated by
the LED WiFi ❸flashing green. The selected Wi-Fi channel is activated after exiting the test
mode. This is not stored in the device (selection only temporary).
Summary of the states of the LED WiFi ❸:
The LED KNX ❹lights up green when the KNXnet/IP tunneling connection is active.
Summary of the states of the LED KNX ❹:
3 Reset to factory default settings
It is possible to reset the device to its factory default settings.
▪Disconnect the KNX bus connection ❽from the device.
▪Press the button Prog. Mode ❻and keep it pressed down.
▪Reconnect the KNX bus connection ❽to the device.
▪Keep the button Prog. Mode ❻pressed for at least another 6 seconds.
▪A short flashing of all LEDs (❷❸❹❼) visualizes the successful reset of the device to
factory default settings.
LED Status
Meaning
LED lights green
KNX bus voltage present.
LED flickers green
Telegram traffic on the KNX bus.
LED Status
Meaning
LED is off
The Wi-Fi channel configured via ETS is selected.
LED flashes 1x green
Wi-Fi channel 1 is selected.
LED flashes 2x green
Wi-Fi channel 6 is selected.
LED flashes 3x green
Wi-Fi channel 11 is selected.
LED Status
Meaning
LED lights green
At least one KNXnet/IP tunneling connection is active.
LED is off
No KNXnet/IP tunneling connection is active.

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3.1 Factory default settings
Individual addresses and KNXnet/IP tunneling connections
Individual address: 15.15.255
Active KNXnet/IP tunneling connections: 1
Individual address of the tunneling connection: 15.15.250
Configuration
Device name (SSID): KNX IP Interface 740.1
Mode: Access point
Authentication: WPA2-PSK
Key: MAC address (hexadecimal, bytes separated by hyphen, e.g. 00-24-6D-00-00-00)
Wi-Fi channel: 6
4 Wiring scheme
4.1 Pluggable screw terminal
The screw terminal is used to connect the KNX bus.
4.2 Pin assignment
Connection
Symbol
Description
KNX
+
Positive connection for KNX bus
KNX
-
Ground connection for KNX bus

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5 Setting up a Wi-Fi connection
5.1 KNX IP Interface 740.1 wireless is “Access point”
To set up a Wi-Fi connection from a PC or laptop, a Wi-Fi adapter is required. For laptops, this is
usually integrated in the device.
The Wi-Fi connection to the KNX IP Interface 740.1 wireless is set up as follows:
First, the Wi-Fi provided by the KNX IP Interface 740.1 wireless must be found. The Windows®
“Show available networks”dialog lists all available wireless networks. This dialog can be accessed
via “Settings / Network & Internet / Show available networks”. Alternatively, this dialog can be
accessed via the corresponding “Network”icon in the notification area at the edge of the screen.
Since the KNX IP Interface 740.1 wireless has an integrated DHCP server, the IP address of the
PC should be set automatically (DHCP). This is the default setting for most laptops.

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To change the settings, select the item “Internet Protocol, Version 4 (TCP/IPv4)”in the properties
dialog of the wireless network connection and click the “Properties”button.
In the following dialog “Obtain an IP address automatically”should be active.
After setting up the Wi-Fi connection, the KNX IP Interface 740.1 wireless can be used as an
interface to the KNX bus.

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5.2 KNX IP Interface 740.1 wireless is “Station / Client Mode”
The KNX IP Interface 740.1 wireless automatically setting up the Wi-Fi connection to the
configured access point, provided the entered data is correct. The data is entered via the ETS
parameter dialog. See the section “ETS database –Operating mode “Station / Client-Mode””.
If configured, the connection can also be established via WPS. For this, the parameter WPS (Wi-Fi
protected setup) must be set to Temporary or Permanent. To connect, the WPS functions must
first be activated on the access point and then the button Test ❺on the KNX IP Interface 740.1
wireless must be pressed for a long time (at least 1 second). The interface must be in normal
operating mode (LED Run ❷lights up green).
After the Wi-Fi connection has been established, the KNX IP Interface 740.1 wireless can be used
as an interface to the KNX bus. This applies to all PCs and laptops in this network.
6 Interface settings in the ETS
6.1 ETS 5
In the ETS 5, interfaces can be selected and configured via the ETS menu “Bus –Interfaces”. All
available connections are listed under “Discovered Interfaces”. After clicking on the desired
connection, connection specific information and options appear on the right side of the ETS
window. The selected connection can be selected as the “Current Interface”via the “Select”button.

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6.2 ETS 6
In the ETS 6, interfaces can be selected and configured in the ETS project via the “Interface”
button. All available connections are listed here.
By clicking on a connection, this is selected as the desired interface.
By clicking the gear next to the desired connection, the connection specific information and options
appear.

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6.3 Common
The displayed device name and the “Host Individual Address”(individual address of the device)
can then be changed via the database entry within your ETS project.
In the “Individual address”section, the individual KNX address of the currently used KNXnet/IP
tunneling connection can be changed. In order to check whether the desired individual address is
not already available in your KNX installation, the button “Address free?”can be pressed.
The KNX IP Interface 740.1 wireless supports up to 8 connections simultaneously. A separate
individual address is used for each connection.
The ETS can access configured IP interfaces even without a database entry. If the configuration
does not correspond to the conditions of the installation, it must be adapted via the database entry
within your ETS project.
The individual KNX device address as well as the individual KNX addresses for the additional
tunneling connections can be changed via the database entry within the ETS project after the
device has been added to the project. See section “ETS database –Additional individual
addresses”.
Like all programmable KNX devices, the KNX IP Interface 740.1 wireless has a individual address
with which the device can be addressed. This is used, for example, by the ETS when downloading
the interface via the KNX bus.
For the interface function, the device uses additional individual addresses that can be set in the
ETS (for ETS5.7 or newer). If a client (e.g. ETS) sends telegrams to the KNX bus via the
KNX IP Interface 740.1 wireless, these contain one of the additional addresses as the sender
address. Each address is assigned to a connection. In this way, response telegrams can be
forwarded clearly to the respective client.
The additional individual addresses must be from the address range of the bus line in which the
interface is located and must not be used by another device.
Example:
Individual address: 1.1.10 (device address in the topology)
KNXnet/IP tunneling connection 1: 1.1.240 (1. additional individual address)
KNXnet/IP tunneling connection 2: 1.1.241 (2. additional individual address)
KNXnet/IP tunneling connection 3: 1.1.242 (3. additional individual address)
KNXnet/IP tunneling connection 4: 1.1.243 (4. additional individual address)
KNXnet/IP tunneling connection 5: 1.1.244 (5. additional individual address)
KNXnet/IP tunneling connection 6: 1.1.245 (6. additional individual address)
KNXnet/IP tunneling connection 7: 1.1.246 (7. additional individual address)
KNXnet/IP tunneling connection 8: 1.1.247 (8. additional individual address)

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7 Programming
The KNX IP Interface 740.1 wireless can be programmed by the ETS in various ways.
7.1 Via the KNX bus
For this, the device must only be connected to the KNX bus. The ETS requires an additional
interface (e.g. USB) to the KNX bus. This way, both the individual address and the entire
application including IP configuration can be programmed. Programming via the KNX bus is
recommended if no IP connection can be established.
7.2 Via KNXnet/IP tunneling
No additional interface is required here. Programming via KNXnet/IP tunneling is possible if the
device already has a valid IP configuration (e.g. via DHCP). In this case, the device is displayed in
the interfaces in the ETS and must be selected. The download takes place from the ETS project,
as with other devices.

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8 ETS database
The ETS5 database (for ETS 5.7 or newer) can be downloaded from the product website of the
KNX IP Interface 740.1 wireless (www.weinzierl.de) or from the ETS online catalogue.
8.1 Additional individual addresses
The additional individual addresses appear in the topology view.
To change the individual addresses, select the corresponding entry in the list and enter the desired
address in the text field under “Properties –Settings”. If the frame of the text field changes its
colour to red after entry, this indicates that the address entered is already being used. The
changes are only applied in the device after download.
Make sure that none of the specified addresses are already used in your KNX
installation.

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8.2 IP settings
By marking the KNX IP Interface 740.1 wireless in the tree structure of the topology view of the
ETS project, the overview “Properties”appears on the right side of the ETS window.
8.2.1 Device name (SSID)
Under Properties menu item “Settings”, the device name (SSID) of the KNX IP Interface 740.1
wireless can be changed. The first 30 characters are used.
The change made will only take effect after an ETS download.

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8.2.2 IP configuration
The IP configuration is only used in “Station / Client mode”.
In operating mode “Access point”the IP configuration is not used.
Under Properties menu item “IP”, the IP specific options of the KNX IP Interface 740.1 wireless can
be changed.
The change made will only take effect after an ETS download.
By switching from “Obtain an IP address automatically”(via DHCP) to “Use a static IP address”
(static IP address), the IP address, subnet mask and standard gateway can be freely selected.
IP Address
The IP address of the KNX IP Interface 740.1 wireless must be entered here. This is used to
address the device via the IP network (Wi-Fi). The IP addressing should be coordinated with the
administrator of the network.
Subnet Mask
The subnet mask must be entered here. This mask is used by the device to determine whether a
communication partner is located in the local network. If a partner is not in the local network, the
device does not send the telegrams directly to the partner, but to the standard gateway, which
takes over the forwarding.
Default Gateway
Enter the IP address of the gateway here, e.g. the access point of the installation.

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Example for the assignment of IP addresses
The KNX IP Interface 740.1 wireless is to be accessed with a PC.
IP address of PC: 192.168.1.30
Subnet mask of PC: 255.255.255.0
The KNX IP Interface 740.1 wireless is located in the same local network, i.e. it uses the same
subnet. The assignment of the IP address is restricted by the subnet, i.e. in this example the IP
address of the IP interface must be 192.168.1.xx, xx can be a number from 1 to 254 (with the
exception of 30, which has already been used). Care must be taken not to assign addresses twice.
IP address of KNX IP Interface 740.1 wireless: 192.168.1.31
Subnet mask of KNX IP Interface 740.1 wireless: 255.255.255.0
8.3 Description
This page shows the device description and the corresponding connection diagram.

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8.4 General settings
Mode
The operating mode of the device is configured here. The following options are available:
▪Access point
Device is an access point to which a Wi-Fi client (PC) can connect.
▪Station / Client-Mode
Device is a client that connects to an access point.

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8.5 Operating mode “Access point”
Authentification
The Wi-Fi encryption can be activated/deactivated via the authentification parameter.
The choices are:
▪None
The installer can connect to the Wi-Fi without entering a password.
The Wi-Fi is not encrypted.
▪WPA2-PSK
As encryption standard WPA2-PSK (Wi-Fi Protected Access 2, pre-shared-key) is used.
Key (only for WPA2-PSK, 63 characters)
The key used must be entered here (8 ... 63 characters). This must also be entered in the Wi-Fi
client (PC) when establishing the Wi-Fi connection.
Wi-Fi channel
The used Wi-Fi channel is configured here.
Example: Authentification
To ensure a high level of security, the key should be at least 10 characters long. Also it should
contain upper and lower case letters as well as special characters and numbers.
Device name (SSID): KNX IP Interface 740.1
Authentification: WPA2-PSK
Key: iEn49*s/kP

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8.6 Operating mode “Station / Client-Mode”
SSID of remote access point (32 characters)
Here the identifier of the Wi-Fi network (SSID, Service Set Identifier) to which the device is to
connect has to be entered.
Authentification
The Authentification parameter can be used to configure whether the remote access point uses
Wi-Fi encryption.
The choices are:
▪None
The Wi-Fi is not encrypted.
▪WPA2-PSK
As encryption standard WPA2-PSK (Wi-Fi Protected Access 2, pre-shared-key) is used.
Key (only for WPA2-PSK, 63 characters)
The key used must be entered here (8 ... 63 characters). This is required to establish the Wi-Fi
connection to the remote access point.
WPS (Wi-Fi protected setup)
This configures whether the device can connect to the remote access point using WPS (Wi-Fi
protected setup).
The choices are:
▪Disabled
▪Temporary
▪Permanent (save access data in device)
The WPS function overwrites the authentification settings.

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WARNING
▪The device must be mounted and commissioned by an authorized electrician.
▪The prevailing safety rules must be heeded.
▪The device must not be opened.
▪For planning and construction of electric installations, the relevant guidelines, regulations
and standards of the respective country are to be considered.
ETS5 database
www.weinzierl.de/en/products/740.1/ets5
Data sheet
www.weinzierl.de/en/products/740.1/datasheet
CE Declaration
www.weinzierl.de/en/products/740.1/ce-declaration
Tender text
www.weinzierl.de/en/products/740.1/tender-text
WEINZIERL ENGINEERING GmbH
Achatz 3-4
84508 Burgkirchen an der Alz
GERMANY
Tel.: +49 8677 / 916 36 –0
E-Mail: [e-mail]
Web: www.weinzierl.de
2021-11-18