User Manual

GAMMA instabus
Technical Product Information
August 2014
IP Interface N148/22 5WG1 148-1AB22
Siemens AG N 148/22, 7 pages Technical Manual
Infrastructure & Cities Sector, Building Technologies
Control Products and Systems ã Siemens AG 2014 Update: http://www.siemens.com
P.O.Box 10 09 53, D-93009 Regensburg Subject to change without prior notice
2.11.1.14/1
Product and Applications Description
The IP Interface N148/22 is a DIN rail mounted device.
This device utilizes the KNXnet/IP standard and
enables communication connections to KNX/EIB lines
or systems via data networks using the Internet
Protocol (IP). PC’s or other data processing equipment
can exchange data with KNX/EIB devices through this
communication link.
The physical connection to the KNX/EIB bus is
established via a bus connector terminal block. For
connection to the data network (IP via 10BaseT) the
device contains an RJ45 socket.
By using a LAN modem a KNX/EIB installation can be
remotely accessed even if there is no direct data
network connection between a PC and an IP Interface.
LAN modems are available on the market for standard
telephone, ISDN or DSL connections.
The IP Interface requires additional operating power for
its operation. The IP Interface N148/22 can source this
operating power via the network connection from
“Power over Ethernet” according to IEEE 802.3af.
Alternatively, the operating power can be provided via a
second terminal block (white-yellow terminals) by a
safety extra low voltage (SELV) power supply
AC/DC 24 V or by a bus power supply (unchoked
power, DC 29V). When a SELV power supply is
connected the operating power is sourced from it.
The IP Interface has these characteristics:
· Simple connection to hierarchically superimposed
systems via Internet Protocol (IP)
· Direct access to the KNX/EIB installation from any
access point to the IP network (KNXnet/IP Tunneling)
· Communication between buildings and facilities
· LED display of
- operation
- KNX/EIB communication
- IP communication
· Simple configuration with standard ETS
· Easy connection to SCADA and Facility Management
systems (see: Supported Software)
KNXnet/IP Tunneling interface to the bus
A direct connection between a networked PC and the
bus can be established via a data network and the IP
Interface N 148/22. This allows for accessing the bus
from any access point in the data network.
The IP Interface N148/22 provides up to five KNXnet/IP
Tunneling connections, allowing for e.g. simultaneous
configuration with ETS and operation of a visualization.
Note
For stable communication via KNXnet/IP Tunneling the
IP Interface must use a separate individual address for
each KNXnet/IP Tunneling connection. These
additional individual addresses must be different from
the individual address of the device and must not be
used by any other bus device. In ETS these individual
addresses should be reserved by proxy devices.
ObjectServer interface to the bus
A direct connection between a networked PC and the
bus can also be established via a data network and the
IP Interface N148/22 using ObjectServer. ObjectServer
compared with KNXnet/IP Tunneling provides the
advantage that the communication can be maintained
even over network connections with a transmission time
for the datagrams of over one second (e.g. satellite
connections).
Assignment of additional individual addresses
Additional individual addresses are either assigned with
ETS or alternatively without a tool automatically by the
device itself.
The automatic address assignment for KNXnet/IP
Tunneling and ObjectServer is started when the
learning button is pressed during normal operation for
more than 5 seconds but less than 10 seconds. The
programming LED flashes during the address
assignment process. The device checks which
individual addresses are already used by other bus
devices connected to the bus line. These addresses are
not used for the address assignment.