Quantum 890 USE 155 User Manual

Page 49

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 TCP/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.