Data Sheet for Product

Technical Specification Sheet
Document No. 154-110
November 27, 2012
Siemens Industry, Inc. Page 1 of 3
GAMMA
IP Interface N 148/22
Description
The IP Interface N 148/22 implements the KNXnet/IP
standard and connects KNX lines or systems to data
networks using the Internet Protocol (IP). Computers
or other data processing equipment can exchange
data with KNX devices through this communication
link. This device offers concurrent access to the bus
line from up to five computers or other data processing
equipment.
The physical connection to the KNX network is
established through a Bus Terminal block. For
connection to the data network (IP using 10Base-T),
the device contains an RJ-45 socket.
Using a LAN modem, a KNX installation can be
remotely accessed even if there is no direct network
connection between a computer and an IP Interface
N 148/22. LAN modems are readily available for
standard telephone, ISDN, or DSL connections.
The IP Interface N 148/22 requires additional operating
power from only one of the following sources:
• A Power over Ethernet (PoE) network connection
according to IEEE 802.3af.
• A second terminal block (white-yellow terminals)
connected to a Class 2 power supply AC/DC 24V.
• A Gamma Power Supply Unit N 125/21 (unchoked
power, 29 Vdc).
The following features are integrated in the device:
• Simple configuration with ETS, local to the job site
or remote, leveraging the available wired or
wireless IP infrastructure (KNXnet/IP Tunneling)
• Status LEDs showing operation and KNX and IP
communication
• Simple connection to other devices or systems
connected to the same Internet Protocol (IP)
network.
Application Program
12 CO IP Interface 720001