Rockwell Automation MD65 EtherNet/IP Communication Module - Manual (Page 167)

Glossary Glossary-1
G
LOSSARY
BOOTP (Bootstrap Protocol) - Enables the module to configure
itself dynamically at boot time if the network has a BOOTP server.
The BOOTP server assigns the module a preconfigured IP address,
a subnet mask, and a gateway address; therefore, you do not have
to configure these using the parameters in the module. BOOTP can
make it easier to administer an Ethernet network. A free version of
Rockwell Software’s BOOTP Server can be accessed at:
http://www.reliance.com/prodserv/standriv/stdhome.htm.
bridge - A network device that can route messages from one
Ethernet network to another. A bridge also refers to a
communications module in a ControlLogix controller that connects
the controller to a network.
See scanner.
CIP (Control and Information Protocol) - The transport and
application layer protocol used for messaging over EtherNet/IP
networks. The Control protocol is for implicit messaging (real time
I/O). The Information protocol is for explicit messaging
(configuration, data collection, and diagnostics).
controller - Also called programmable logic controller. A solid-state
control system that has a user-programmable memory for storage
of instructions to implement specific functions such as I/O control,
logic, timing, counting, report generation, communication,
arithmetic, and data file manipulation. A controller consists of a
central processor, input/output interface, and memory.
See also
scanner.
data rate - The speed at which data is transferred on the EtherNet/
IP network. You can set the module to a data rate of 10 Mbps full
duplex or 100 Mbps half duplex. If another device on the network
sets or auto-negotiates the data rate, you can set the module to
automatically detect the data rate.
duplex - Communications mode. Full-duplex communications
refers to the transmission of data in two directions simultaneously
(as in a telephone). Half-duplex communications refers to the
transmission of data in one direction at a time (as in a walkie-talkie).
The duplex mode used by the module depends on the mode that
other network devices, such as switches, support.
Electronic Data Sheet (EDS) files - Simple text files that are used
by network configuration tools such as RSNetWorx for EtherNet/IP
to describe products so that you can easily commission them on a
network. EDS files describe a product device type, revision, and
configurable parameters.