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S600 Instruction Manual
M
Mantissa
Numerically significant part of a floating point number.
Modbus
A device communications protocol developed by Gould-Modicon and used on the
station supervisory computer data link.
Modem
Modulator Demodulator.
Modulate
Superimposing one signal upon another.
Multiplexor
Multiple Input Selector.
N
Noise
Random electrical interference.
Non-volatile
Memory
Memory type that retains data when the power supply is disconnected.
O
Object
Generally, any item that can be individually selected and manipulated. This can
include shapes and pictures that appear on a display screen as well as less-tangible
software entities. In object-oriented programming, for example, an object is a self-
contained entity that consists of both data and procedures to manipulate the data.
Octal
Numbers in base 8 (that is, numbers 0 through 8).
Open Collector
Digital output that is driven by a transistor and requires external power.
Opto-Isolator
Optical device for connecting signals while maintaining electrical isolation.
Overrange
Over the preset current limit for the A/D Converter.
P, Q
PCB
Printed Circuit Board.
PID
Three-term control action that uses Proportional, Integral, and Derivative components
to modify a control output, with the goal of achieving a measured process variable at a
set point.
Port
Group of inputs or outputs to the computer.
Program
Series of instructions.
Protocol
Precise description of data interchange over a telemetry link.
PRT
Platinum Resistance Thermometer.
PSU
Power Supply Unit.
R
ROM
Read-only memory (fixed storage). Typically used to store firmware. Flash memory.
RS-232
Voltage standard for serial data transmission.
RTD
Resistance Thermometer Device.
RTU
Remote Terminal Unit.
RTV
Room Temperature Vulcanizing, typically a sealant or caulk such as silicon rubber.
RX or RXD
Received information.
S
Security Code
Codes that limit operator access to software parameters; typically stored in micro
memory.
SRAM
Static Random Access Memory. Stores data as long as power is applied; typically
backed up by a lithium battery or supercapacitor.
S600
FloBoss
™
S600 Flow Computer.
Revised Aug-06
Glossary
A-3
Содержание FloBoss S600
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Страница 22: ...S600 Instruction Manual 2 10 Installation Revised Jan 07 ...
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