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Overview, Serialgate white paper – Solvline SG Series White Paper User Manual

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SerialGate White Paper

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Overview

Computer becomes more efficient tool when combined with features provided by the external

equipment connected to it.


In order to connect external devices, communication protocol determined as standard is

necessary, and the most widely used method is the serial communication. Serial
communication is based on Telex communication, and nearly every computer has a serial port.
However, communication speed is slow and it is not suitable for long distance communication.


On the other hand, Ethernet enabling N:N communication in high speed is widely used for

communication method. Even though Ethernet provides convenient wiring schemes, it is more
complex and expensive than serial communication which makes it not ideal for connecting
individual device.

History of Device Server

As two methods with different purposes and characteristics coexist, Ethernet has developed

to IP network (internet). IP network overcomes the spatial limitation that was in LAN and now
supports environment where PC all over the world can be connected on network. Computers
and devices do not need to be physically connected, and with IP address they can be logically
connected over the network. In this background, the need to connect devices with serial port to
Ethernet has increased and the device that connects them over Ethernet, device server, has
emerged.