11.2 Control and Monitoring Using a LAN Interface
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About the settings
IP address The TCP/IP used for LAN communications with this device uses an IP
address to differentiate each device.
With IP version 4 (IPv4), widely used at present, IP addresses consist
of 32-bit numbers. Normally, decimal notation is used to express each
octet (8 bits) of the IP address, such as in 192.168.1.1, and this
expression is joined with a period(.).
Network mask IP addresses can be divided in 2: the network portion, expressing the
network position where devices are connected; and the host portion
that identifies devices on the network.
The net mask is used to indicate the ranges of the network and host
portions. The net mask expresses the bit corresponding to the network
portion as “1”, and the bit corresponding to the host portion as “0”.
(Example: When the network is assigned to the first 24 bits and the
host is assigned to the remaining 8 bits:
11111111 11111111 11111111 00000000
Normally, the IP address is expressed as a hexadecimal number
(0xffffff00) or as a decimal number (255.255.255.0).
Also, the length (number of bits) of the network portion can be
expressed as 192.168.1.0/24. In this case, the “24” that follows the “/”
indicates that the network portion is 24 bits.
Subnet mask Except in an extremely limited number of cases, when constructing a
network within an organization, the network is usually divided in sev-
eral smaller networks. In this case, each division of the IP network is
referred to as a subnetwork.
When the network is divided into subnetworks, the host portion of the
IP address is assigned to the subnetwork and the host, and you can
use the net mask to delimit the subnetwork and host portions. In this
case, the net mask is referred to as a subnet mask.
• The number displayed to the right of the “Net Mask” is the MAC Address.
This is the same as on the MAC Address label on the back panel.
• When you set the printer as the RS connection point, you can use the
printer and LAN simultaneously. When you set the modem as the con-
nection point, you cannot use the LAN.
• When communicating with this device and a PC through a LAN, make the
proper network settings on this device.
• When connecting to an existing LAN network, consult your system
administrator.
• This device does not support DHCP (an IP address automatic acquisition
function).
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