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A T4
recommendation means we have applied this product successfully repeatedly.
It also means, we can point
to satisfied customers
benefiting from this product.
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Network
The Information |
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Ethernet and Internet (TCP/IP)
are common terminology and accepted technology of the information age, but
are relatively new to factory production.
Before Ethernet, manufacturers had to
create their own networks, to allow information to be shared between
individual controls and systems. |
Ethernet is a flexible,
scaleable and cost-effective way to:
- Bring the enterprise together with
fully integrated information,
control and communications systems
- Remotely configure, program, monitor
and manage: all factory floor devices
- No disruption to existing control
networks
- Leverage existing Ethernet wiring and
corporate wide area network
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Ethernet is here
to stay. In fact, its use continues to grow every year. It has become low
cost and the cost continues to drop. It has high performance and the
performance continues to improve every year. So you have the ideal
situation where the cost is dropping while the performance is improving.
This has made Ethernet the dominant network standard.
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| Invention
of Ethernet
“In late 1972, Bob Metcalfe and his
Xerox PARC colleagues developed the first experimental Ethernet system to
interconnect the Xerox Alto, a personal workstation with a graphical user
interface. The experimental Ethernet was used to link Altos to one
another, and to servers and laser printers. The signal clock for the
experimental Ethernet interface was derived from the Alto's system clock,
which resulted in a data transmission rate on the experimental Ethernet of
2.94 Mbps.
Metcalfe's first experimental network was
called the Alto Aloha Network. In 1973 Metcalfe changed the name to
"Ethernet," to make it clear that the system could support any
computer--not just Altos--and to point out that his new network mechanisms
had evolved well beyond the Aloha system. He chose to base the name on the
word "ether" as a way of describing an essential feature of the
system: the physical medium (i.e., a cable) carries bits to all stations,
much the same way that the old "luminiferous ether" was once
thought to propagate electromagnetic waves through space. Thus, Ethernet
was born.” (more
details) |
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