extends from the simple installation print-
er connected complex networks with sever-
al thousand clients.
• RS485 interface
The RS485 industrial bus interface differs slightly from
the RS422 that the RS485 enables the connection
of several transmitters and receivers (up users)
via protocol.
• RS422 interface
The RS422 serial high-speed standard suitable
for communication between maximum ten users,
which designed bus. The maximum length this bus sys-
tem, when twisted-pair cables are used, approx. The Amer-
ican nomenclature, however, the most widely used.5 Data technology
Data technology used wide range applica-
tions. Al-
though now largely replaced the USB interface, the
RS232 standard still frequently used for control
lines. Specified data transmission
rates range from Mbit/s much Gbit/s
today, and the data can transmitted over both clas-
sic copper cables and fibre optic cables.2. The
American nomenclature, however, the most widely
used. The stand-
ard includes cable and connector types such as
RJ45.3.
• TTY system
Unlike the RS232 other serial interfaces, the TTY
system not voltage-controlled instead delivers
an imposed current (4–20 mA).
There range interfaces for different applica-
tions: from bus lines for telecommunication and data
transfer through simple terminal devices such as
printers scanners.2
km with data rate Mbit/s (dependent upon seri-
al controllers). This enables cable
lengths several hundred metres realised.
• V24 interface
V24 the German designation for RS232.
Ethernet
Ethernet the standard technology for networked
computer systems today. used,
for example, for modems and other peripherals.
• V11 interface
V11 the German designation for the RS422.
Interfaces
External devices such printers, scanners and con-
trol systems activated via serial parallel interfaces
must additionally integrated into the surge protec-
tion concept. OBO also offers host pro-
tective devices that are simple install, depending on
the particular application.3. The system can de-
signed for maximum eight data lines, although
two are always used send and receive lines.
• RS232 interface
The RS232 frequently used interface. all cases, careful planning of
surge protection measures required, taking account
of the data interfaces hand. 1.
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Chapter The internal lightning protection system
