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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.
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