ESA VT130W, Hardware Manual

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405.1200.037.2 - Rel.: 2.21 of 25/02/2008
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ETHERNET VT terminals equipped with the right interface can be connected in a net-
work with other devices functioning by means of Transfer Control Proto-
col/Internet Protocol (TCP/IP).
The advantage of the Ethernet connection lies in the high speed of data
exchange it gives, (from 10Mbit/s to 100Mbit/s depending on the device
connected); secondly cabling is simplified – indeed, the VT does not need
to be connected directly to the device but they can be interconnected using
a network concentrator; in addition, the number of possible network partic-
ipants is so high as to be practically limitless.
ETHERNET:
VT operation
The VTs communicate with the devices in a network by means of an
exchange of information on the form of small packages of data that are
managed by the TCP communication protocol. This splits up the informa-
tion and recomposes it once it arrives at its destination and it is responsible
for checking that all the information has arrived at the destination. The IP
protocol, on the other hand, is responsible for directing the information sent
to the right addressee. These protocols, TCP and IP, always work closely
together to ensure that the exchange of information functions correctly.
ETHERNET:
Configuration
software There are two types of software that come into play when configuring this
network:
• VTWIN
• Software for configuring the device
These softwares require the setting of parameters that depend on the type of
network to which the terminal is connected.
VTWIN:
The parameters that need to be set in the VTWIN project of each ter-
minal connected in network are as follows:
• IP Address
• Subnet Mask
• Any other parameters depending on the device connected
Equal IP addresses are not valid.
Software for configuring the device:
This software is supplied by the maker of the device.