User`s manual

IPL T SF24 and IPL T SFI244 • GlossaryIPL T SF24 and IPL T SFI244 • Glossary
Glossary, cont’d
B-5B-4
Pass-through allows control systems to work with the IPL and
provides a link between two ports.
Ping is a utility that tests network connections. It is used to
determine if the host has an operating connection and is able to
exchange information with another host.
Port number is a preassigned address within a server that
provides a direct route from the application to the Transport
layer or from the Transport layer to the application of a TCP/IP
system.
Powered Ethernet is a standard (802.3af) that provides power to
network devices by utilizing the existing Ethernet connection,
thereby eliminating the need for additional, external power
supplies.
Static IP refers to an IP address that has been specifically
(instead of dynamically—see DHCP above) assigned to a device
or system in a network configuration. This type of address
requires manual configuration of the actual network device or
system and can only be changed manually or by enabling
DHCP.
Transmission Control Protocol/Internet Protocol (TCP/IP) is
the communication protocol (language) of the Internet.
Computers and devices with direct access to the Internet are
provided with a copy of the TCP/IP program to allow them to
send and receive information in an understandable form.
Telnet is a utility available on most PCs that allows the
computer system to communicate with one of its remote users/
clients. A user who wishes to access a remote system initiates a
Telnet session, using the address of the remote client. The user
may be prompted to provide a user name and password if the
client is set up to require them.