Lan Cable Connection - Hitachi IJ UX2 User Manual

2.2.3 LAN cable connection

【Notes on replacement】
● Be sure to turn off the main power when replacing.
● Connect the connectors securely.
■Glossary
Terminology
IP address
(Internet protocol address)
Subnet mask
Default gateway
Port number
MAC address
The IP address is a 32-bit ID number allotted to equipment
connected to the Internet. The 32-bit number of the IP address is
usually divided into four 8-bit segments for display. The IP
address consists of a "network address" that identifies the
network and a "host address" that identifies the individual pieces of
equipment connected in the network.
The subnet mask is a 32-bit number that defines what bits of the
IP addresses are used for the network address. The network
address segment of the IP address is determined by calculating
the logical AND of the IP address and subnet mask.
The default gateway is equipment such as a router that functions as
the "gateway" to the network. When there is communication
between different networks and there is no unique path for the
equipment to be accessed, the default gateway is used to connect
them.
The port No. is the sub-address that specifies one of several
programs running on equipment specified by the IP address.
Port numbers 502 or 1024-65535 are used as the sub-address.
It is a number registered to identify the device on the network.
The MAC address consists of 12 digits like 01-23-45-67-89-AB.
7
Connect the LAN cable
Explanation