Response Electronics CL6011B Dokumentacja Strona 124

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Original — December 1991
UM4.6:CS6003
Glossary-2
Alarm Trip Point
The user-defined value at which the system activates an alarm. Such
activation occurs as the measured variable moves out of range (for
example, going below the trip point for a low alarm).
Algorithm A set of logical steps to solve a problem or accomplish a task. A
computer program contains one or more algorithms. Many configurations
of PROVOX systems also contain algorithms, particularly in operations,
procedures, and function sequence tables.
ALM Abbreviation: Alarm
Alphanumeric Consisting of letters or numbers.
ALU Acronym: Arithmetic Logic Unit
American National Standards Institute (ANSI)
A technical organization that develops standards for the compatibility of
industrial equipment. This organization consists of users and
manufacturers of such equipment.
American Wire Gauge (AWG)
The usual system of wire size measurement in the United States. A
14 AWG wire has a cross-sectional area of 2.08 mm; a 000 AWG wire
has a cross-sectional area of 85.02 mm. Note that the smaller the AWG
value, the larger the wire.
Analog Continuously variable over a given range. A process control system
senses a physical variable such as voltage, current, or resistance as an
analog value.
Analog Input (AI)
A PROVOX point type. An analog input point receives a single analog
value, the process variable.
Analog Output (AO)
A PROVOX point type. An analog output point generates a single analog
value, the set point.
Analog to Digital Converter (A/D or ADC)
An integrated circuit device that converts analog signals into a digital
form. This enables a digital computer to operate on such signals.
ANSI Acronym: American National Standards Institute
Anti-Reset Windup
An additional gain factor, equal to 16 times the integral (reset), applied to
controllers to help them recover faster from output saturation, or windup.
Ala - Anti
Glossary
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