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1 Publication 1761-UM006A-EN-P - February 2001
Glossary
ASA (Advanced System Architecture)
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 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. For example, the
DH-485 network devices default to 19,200 baud.
CIP (Control and Information Protocol)
DNI (DeviceNet Network Interface)
Allen-Bradley catalog number 1761-NET-DNI. The DNI allows you to
connect DF1 devices to DeviceNet networks.
DF1 Full-Duplex
DF1 is a standard (open) point-to-point communication protocol.
Virtually all Allen-Bradley controllers (PLC-3, 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. The ENI allows you to
connect DF1 devices to Ethernet networks.
Ethernet Network
A local area network with a baseband communication rate of 10M bits
per second.