User Manual

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Siemens ET D1 · 2018/2019
Technical Information
Communication
General
16
Overview
Data networks
The following three versions are used primarily for the data net-
work:
Ring networks
Star-type networks
Bus networks
Ring networks
In a ring network, the users (network nodes) are connected in a
closed loop. The data are transmitted from network node to net-
work node in one direction. To expand the system, simply open
the ring and add another user.
Star-type networks
When a star structure is used, all users are linked to a control
room, which also operates as the system control. It relays the
data to all required devices. This network structure enables mul-
tichannel operation, which supports the simultaneous linking of
many connections. Further users can be simply connected to
the central operating point if required.
Bus networks
In a bus network, all users are directly connected to a bus cable.
The data transmitted from one network node are initially received
by all other nodes. However, all the network nodes ignore this
data – with of course the exception of the targeted node. An
expansion of the power supply is achieved by directly tapping
the bus and thus connecting new users to the supply.
Plug-in connectors, distribution boards and outlet boxes
For the connection and distribution of cables and the connection
of terminals, there are a range of system-specific plug-in con-
nectors, distribution boards and outlet boxes available.
Flush-mounting devices
These components for data processing and data communica-
tion, as well as telecommunication and electro-acoustical sys-
tems, are available in the surface-mounting product range of in-
stallation switch/socket outlet systems: DELTA line, DELTA miro,
DELTA profil, DELTA style, DELTA natur.
DELTA fläche, as well as for installation in flush-mounting device
boxes with 60 mm diameter and in silltype trunkings with either
vertical or 30° inclined outlets.
Ex
amples
The following describes just a few examples from the great num-
ber of connection components available in the field of data pro-
cessing and telecommunications technology. Covers and
frames (80 mm) in the DELTA line, DELTA miro, DELTA profil,
DELTA style, DELTA natur, DELTA fläche switch/ socket outlets
ranges can be used for surface mounting all sockets.
D-subminiature plug-in connectors
D-subminiature plug-in connectors are primarily used for the
plug-in connection of computer terminals and data transmission
devices, as well as for measuring and control equipment. The
outlet box has a 9, 15 or 25-pole trapezoid plug-in pin or socket
connector for connection of one device, or two pin/socket con-
nectors each, if two devices are to be connected.
BNC/TNC plug-in connectors
BNC
1)
/TNC
2)
plug-in connectors are used for high-frequency
applications in coaxial cable networks. The standard version is
used for frequencies up to 4 GHz and is available for coaxial ca-
ble impedances of 50 W and 70 W. For BNC plug-in connectors,
the connector is linked to the socket of the outlet box over a bay-
onet lock and, in the case of vibration-resistant TNC plug-in con-
nectors, over a screw plug.
Western (WE) plug-in connectors
Western (WE) plug-in connectors are used in both data process-
ing technology (e.g. as twisted pair connection
3)
) and telecom-
munications technology (e.g. as ISDN
4)
basic connection).
The WE outlet boxes are equipped with one or two 6 or 8-pole
WE sockets, which, if partially equipped with contacts, provide
4, 6 or 8-pole outlet versions.
Twinax plug-in connectors
Twinax plug-in connectors are primarily used in local data net-
works (LAN) with IBM data terminal equipment. Both primary
conductors of the Twinax cable are soldered to the Twinax in-
stallation socket of the outlet box, the metal braiding is securely
clamped. After contacting with the outlet box, the connector is
screwed securely into place by a cap nut.
TAE connection units
TAE telecommunication connection units are intended solely for
the connection of telecommunication devices, such as tele-
phones, fax machines, telex systems. The adapter (connector)
is available on its own and preassembled with connecting cable
in various lengths. The outlet boxes with one to three sockets
and the adapters are prepared for telephone connection
(F coding) or for connection of additional devices (fax, etc.) and
data terminal equipment (Btx) (N coding).
Fiber-
optic outlet boxes
Fiber-optic outlet boxes in the DELTA profil product range meet
the requirements of a modern cabling system with glass-fiber
cables.
These systems are equipped to cope with future communication
requirements and ensure fast and reliable transmission for many
applications, such as:
• Telephone (voice, fax),
• Data transmission (client/server, computing, mail, Internet, vir-
tual LAN),
• Multimedia (integration of voice, data and video).
1)
BNC: Standard bayonet connector
2)
TNC: Standard threaded connector
3)
Two twisted cables.
4)
ISDN: Integrated Services Digital Network
I2-6779a
I2-6780a
I2-6781a