Twisted pair - 10baseT - UTP Cable

iCOM Controls Training and Service Manual

Switches perform the same mechanical function, but they also include software inside that allows communication to operate at faster speeds and allow for multiple unit communication. Switches are the latest technology, but you are safe to use either device.

d iUNIT IDENTIFICATION OR ADDRESSINGManual background gManual backgroundManual background i t a l

Hubs are available in different configuration, with 4, 8, 12, 15 or 24 RJ- 45 connections. You can plug in the RJ45-connector into a hub while the network is running on the other connected

systems, allowing you to move / add 192.168.168.1 systems without having to shutdown the network. As network grow, you may need a second hub:

Twisted pair - 10baseT - UTP Cable

192.168.168.3

192.168.168.2

UNIT IDENTIFICATION OR ADDRESSING

The units are separated and identified through their TCP/IP address. TCP/IP refers to the protocol or language being used to communicate between the Environmental Units. The addresses are arranged in 32-bit numbers. To make it easier to memorize such IP-addresses, they are usually expressed as 4 8-bit numbers (example: 192.168.10.1), where each of the 4 numbers is within the range of '0' to '255' (there are restriction on using '0' and '255', avoid using them.)

When setting up a small private network, you are free to use ANY IP- address, however, when you are connected to a company network, you need to ask the Network-administrator to assign you an IP-address. And if you are connected to the Internet, your ISP (Internet Service Provider) will assign an IP-address to you.

Even if a network is NOT connected to the Internet, it has become custom to use on private networks a range of IP-addresses, which are reserved for private networks (that makes it later possible to connect your private network to the Internet without having to re-configure everything). The reserved IP-address is: 192.168.x.y, where x=same number on all systems and y=different/unique number on all systems.

See the example above under HUBS AND SWITCHES for an example of this configuration.

166

Page 167
Image 167
Liebert TM-10098 service manual iCOM Controls Training and Service Manual, Unit Identification Or Addressing