HP MicroLogix 1761-NET-ENI manual Glossary

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

Apeer-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.

Publication 1761-UM006A-EN-P - February 2001