Restricted A071-0CG-2.02-2
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application A piece of software (a program) consisting of one or more
processes and supporting functions.
ASCII American Standard Code for Information Interchange. A
seven-bit code that standardizes a set of characters
representing letters and numbers for international use.
baud rate A measurement of the speed of a communications line; the
number of times a line can change state in one second; the
rate at which a signal is modulated.
binary A number system having only two symbols (1 and 0), and
where values are expressed in the base two number
system.
bit Abbreviation of binary digit. The smallest unit of
information in a binary system. Has a value of either one
(1) or zero (0).
char The name of a data-type in the C programming language.
Stands for character, or a group of eight bits that function
as a single unit.
cyclic redundancy check An error-detection scheme that checks the integrity of a
transmitted message for errors introduced during
transmission. Abbreviated as CRC.
data-collection
application
A software application that acquires data from and sends
data to various intelligent electronic devices. Abbreviated
as DCA.
data-processing
application
A software application that requests and processes data as
it is required by (usually) a master station. Abbreviated as
DPA.
host The client or host station/computer, with which the RTU
equipment communicates. Also called a master or master
station.
logical remote unit An RTU that exists in software, but not physically. LRUs
are created by software partitioning of a single physical