Rockwell Automation 1761-NET-ENIW MicroLogix Ethernet Interface (ENI) User Manual - Manual (Page 135)

1 Publication 1761-UM006E-EN-P - August 2005
Glossary
Autobaud
A feature that allows a communications port to automatically
synchronize to the device or network that it is attached to. This feature
typically minimizes the amount of configuration required, and also
makes is easier to replace devices.
Auto BCC/CRC
Sends a test message during autobaud to detect which Error Detecting
setting to use, BCC or CRC. This will not occur for fixed baud rate
settings. The ENI/ENIW uses CRC for fixed baud rates.
Baud Rate
The speed of communication between devices on a network. All
devices must communicate at the same baud rate. Most DF1 devices
default to 19,200 baud.
CIP (Common Industrial Protocol)
DHCP (Dynamic Host Configuration Protocol)
DF1 Full-Duplex
DF1 is a standard (open) point-to-point communication protocol.
Virtually all Allen-Bradley controllers (Logix, PLC-5, SLC, MicroLogix)
that have an RS-232 communications port support DF1.
DF1 Protocol
A peer-to-peer link-layer protocol that combines features of ANSI
X3.28-1976 specification subcategories D1 (data transparency) and F1
(two-way simultaneous transmission with embedded responses).
ENI (Ethernet Network Interface)
Allen-Bradley catalog number 1761-NET-ENI and 1761-NET-ENIW.
The ENI allows you to connect DF1 devices to Ethernet networks. The
ENIW adds web server capabilities.
Ethernet Network
A local area network with a baseband communication rate of
10/100/1000M bits per second.
Full-duplex
A high-performance protocol that allows simultaneous two-way data
transmission. For point-to-point applications only.