Emerson FloBoss S600+, Instruction Manual

Page: 108 / 156

S600+ Instruction Manual
A-2 Glossary Revised July-2017
Binary Numbers in base 2 (that is, only numbers 0 and 1 are used). May be represented as a
digital signal and referred to as True/False, High/Low, or On/Off.
Bit A b inary dig it , either a binary 0 or 1. One byte is the amount of memory needed to
store each character of information (text or numbers). Eight bits constitute one byte (or
character).
Bit Link A bridge (also known as a jumper) that closes an electrical circuit. Typically a bit link
consists of a plastic plug that fits over a pair of protruding pins. Placing a bit link over a
differe
nt set of pins allows you to change a board’s parameters.
Bit switch Switches that represent data bits by on or off state.
Buffer A device inserted between devices to match impedance, equipment speeds, or to
supply additional drive capability. Also, a storage area for data that compensates for
the speed difference when transferring data from one device to another; usually refers
to an area reserved for I/O operations into which data is either read or from which data
is written.
Bus One or more conductors used as a path over which information transmits.
Byte Block of 8 bits, which can define 256 states (0 through 255).
C
Calorific value
(CV) Superior calorific value (CV) is the amount of heat which could be released by the
complete combustion in air of a specified quantity of gas, in such a way that the
pressure at which the reaction takes place remains constant, and all the products of
combustion are returned to the same specified temperature as that of the reactants, all
of these products being in the gaseous state except for water formed by combustion,
which is condensed to the liquid state (source ISO6976, 1995).
CV can also be calculated in accordance with AGA Report No. 5.
For inferior calorific value, water remains in a gaseous state (vapour).
CATS C ommon A rea T ransmission S ystem. An agreed standard for measurement of gases
and light hydrocarbons which are to be delivered to and redelivered for the CATS
Transportation Facilities and Input Facilities (EU only).
Cold Start A process of starting the FloBoss S600 that copies the configuration file from Flash
memory.
Config600
software PC-based software tool used to configure the S600.
Constants Numbers that only infrequently change. Examples would include the conversion value
between Degrees Celsius and Degrees Fahrenheit or pipe diameter.
Control bus Bus connections for control signals (such as read/write).
CPU C entral P rocessing U nit; in the S600, the CPU module (P152).
CTL_CPL Factors for the C orrection for the t emperature of the l iquid and c orrection for the
p ressure of the l iquid. In the Calculations portion of the Config600 Configuration
Generator, this option is set to include the Liquid Volume Correction Table for a US
configuration (tables 23, 24, 53, or 54).
CTS C lear t o S
end. The signal asserted (logic “0”, positive voltage) by the remote device to
inform the flow computer that transmission may begin. RTS and CTS are commonly
used as handshaking signals to moderate the flow of data into the remote device.
D
DAC D igital to A nalog c onverter, also known as the D/A converter. Used to convert the
digital signals used within the S600 to an analog value for use with an analog
transducer or for an analog readout.
Databus A group of bi-directional lines capable of transferring data to and from the CPU storage
and peripheral devices.
DCS D istributed C ontrol S ystem. A computer system which manages the process of a plant
or site.