©
2019 WEINZIERL ENGINEERING GmbH
Page 3/8
The KNX IP Router has a filter table and thus contributes to
reducing the bus load. The filter table (8kB) supports the extend-
ed group address range (main groups 0..31) and is automatically
generated by the ETS.
Because of the speed difference between the Ethernet (10/100
MBit/s) and KNX TP (9.6 kBit/s), a far greater number of tele-
grams can be transmitted on IP. If several consecutive telegrams
are transmitted for the same line, they must be buffered in the
router to avoid telegram loss. The KNX IP Router 752
secure
has a memory for 150 telegrams (from IP to KNX).
Bus access function (KNXnet/IP Tunneling)
The KNX IP Router 752
secure
can be used as an interface to
KNX. The KNX bus can be accessed from any point in the LAN.
For this purpose, an additional individual address must be as-
signed. This is described in the following sections.
Installation and Connection
The KNX IP Router 752
secure
is designed for installation on a
DIN rail with a width of 1 unit (18mm). It features the following
controls and displays:
The KNX IP Router 752
secure
is powered by the KNX bus. An
external power supply is not necessary.
The device is not working without bus power.
KNX Programming mode
The KNX programming mode is activated/deactivated either by
pressing the flushed KNX programming button
❸
or by simulta-
neously pressing the buttons
❼
and
❽
.
Status display
The KNX LED
❹
lights up green if the device is successfully
powered by the KNX bus. This LED indicates telegram traffic on
the KNX bus by flickering.
Communication failures (e.g. repetitions of telegrams or telegram
fragments) are indicated by a short change of the LED color to
red.
Overview of the different indications of the KNX LED
❹
:
The IP LED
❻
lights up when an Ethernet link is active. This
LED is green if the device has valid IP settings (IP address, Sub
net and Gateway). With invalid or nonexistent IP settings the
LED is red. This is also the case if e.g. the device has not yet
received the IP settings by a DHCP server.
This LED indicates IP telegram traffic by flickering.
Overview of the different indications of the IP LED
❻
:
For testing purposes (for example, during commissioning) the
configured routing settings (filter or block) can be bypassed via
manual operation.
With the button Pass GAs
❼
the forwarding of group addressed
telegrams can be activated.
With the button Pass IAs
❽
the forwarding of individually ad-
dressed telegrams can be activated.
This is visualized with a single flash of the Mode LED
❺
(or-
ange). If both modes are activated the Mode LED
❺
flashes two
times.
Pressing button Pass GAs
❼
or button Pass IAs
❽
again these
settings can be selected and deselected on demand. Via the
Escape function (Esc) the manual operation can be stopped by
simultaneously pressing the buttons Pass GAs
❼
and Pass IAs
❽
.
If neither programming mode nor manual mode are active the
LED
❺
can visualize configuration errors.
Overview of the different indications of the Mode LED
❺
:
Factory default settings
The following configuration is set by factory default:
Individual device address:
15.15.0
Number of configured KNXnet/IP tunneling con.:
1
Individual address of tunneling con.:
15.15.240
IP address assignment:
DHCP
Initial Key (FDSK)
active
Security Modus
not active
LED Status
Meaning
LED lights green
Device is working in standard operation mode.
LED light red
Programming mode is active
LED flashes 1x orange
Programming mode is not active.
Manual operation is active.
Forwarding IA
or
GA
LED flashes 2x orange
Programming mode is not active.
Manual operation is active.
Forwarding IA
and
GA
LED flashes red
Programming mode is not active.
Manual operation is not active.
The device is not properly loaded e.g.
after an interrupted download.
LED Status
Meaning
LED lights green
KNX bus voltage available.
LED flickers green
Telegram traffic on the KNX bus
LED shortly red
Communication failures on the KNX bus
LED Status
Meaning
LED lights green
The device has an active Ethernet link and valid IP
settings.
LED lights red
The device has an active Ethernet link and invalid IP
settings or not yet received the IP settings by a DHCP
server.
LED flickers green
IP telegram traffic
❶
KNX bus connector
❷
Programming LED
❸
Button f. programming mode
❹
KNX LED (multicolor)
❺
Mode LED (multicolor)
❻
IP LED (multicolor)
❼
Button Pass GAs
❽
Button Pass IAs
❾
LAN Connector
❶
❺
❹
❸
❷
❾
❽
❼
❻
752
K
N
X
IP
R
o
u
te
r
s
e
c
u
re
WEINZIERL
KNX
Mode
IP
Pass
G As
Pass
I As
P/Esc
