Glossary – Schneider Electric 174 CEV User Manual

Page 83

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81

Glossary

address

On a network, the identification of a station. In a frame, a grouping of bits that

identifies the frame’s source or destination.

API

Application Program Interface. The specification of functions and data used by one

program module to access another; the programming interface that corresponds to

the boundary between protocol layers.

ARP

Address Resolution Protocol. A network layer protocol used to determine the

physical address which corresponds to the IP address for a host on the network.

ARP is a sub--protocol which operates under TCP/IP.

BOOTP

Bootstrap Protocol. A UDP/IP--based protocol that allows a host to configure itself

dynamically. Provides a means to assign a host its IP address, typically without

user intervention.

bps

Bits per second.

bridge

A device that connects two or more physical networks which use the same

protocol. Bridges read frames and decide whether to transmit or block them based

on their destination address.

client

A computer process requesting service from other computer processes.

dest_idx

The destination field in a Modbus message. Corresponds to the Modbus device

addressed in the message.

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