User guide

Glossary
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hub
A device which connects a series of flexible and centralized modules to create a
network.
ICMP
Internet Control Messa
g
e Protocol. A protocol within TCP/IP used to report errors
in data
g
ram transmission.
Internet
The
g
lobal interconnection of TCP/IP based computer communication networks.
IP
Internet Protocol. A common network la
y
er protocol. IP is most often used with
TCP.
IP Address
Internet Protocol Address. A 32-bit address assi
g
ned to hosts usin
g
TCP/IP.
IO Map
An area in the controller confi
g
uration memor
y
used to map input and output
points. Previousl
y
called traffic cop.
layer
In the OSI model, a portion of the structure of a device which provides defined
services for the transfer of information.
MAC Address
Media Access Control address. The hardware address of a device. A MAC address
is assi
g
ned to an Ethernet TCP/IP module in the factor
y
.
network
Interconnected devices sharin
g
a common data path and protocol for
communication.
node
An addressable device on a communications network.
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