100
Watkiss DigiVAC Service Manual - Issue 2 - 29/11/04
Electronics & Software
•
Software - GUI Control Panel
4.4.5.5 IP Address
TCP/IP requires that every computer and machine on the network has an
individual address. This address is called an IP address and it consists of four
numbers, separated by periods (see Figure 4:27).
Figure 4:27 Typical IP Address.
Each number can range from 0 to 255. The first three numbers define the
Subnet address and the last number defines the Host address. The Host address
can be thought of as an individual computer’s phone number, and the Subnet
address can be thought of as an area code. Computers and DigiVACs net-
worked together must all use the same Subnet address. Each Host address must
be unique.
Where a DigiVAC is being connected to an existing network, the IT Manager
should assign it an IP address. If a DHCP server is present in the network, the
DigiVAC will be assigned an IP address automatically: you will not need to
alter it.
If a new network is being created, then the computers and DigiVAC can be al-
located any IP addresses (as long as they have the same Subnet address) (see
Figure 4:28).
Figure 4:28 A Typical Network Set-up.
The computers and machines must have the correct ‘Subnet Mask’ defined.
This should be set to 255.255.255.0. This number tells all the equipment that
the Subnet address is defined by the first three numbers, and that the fourth
number is the Host address.
4.4.5.6 Setting Up a New Network
This section explains how to define the IP addresses and Subnet masks on a
new network. Note that this procedure is not necessary if the network contains
a DHCP server.
100.10.2.103
Subnet Address
Host Address
100.10.2.004
100.10.2.006
100.10.2.009
100.10.2.014
Glossary
DHCP Server
: This is a software
program that automatically
allocates and maintains the IP
addresses of computers and Di-
giVACs on a network
.
