Emerson FLOBOSS S600 Instruction Manual page 90

FloBoss S600 Instruction Manual
CPU – P152 Central Processing Unit module.
Current Loop – Serial Communication Technique (0mA/20mA).
CV – Calorific Value calculated using AGA5 or ISO6976.
D
DAC – Digital to Analog Converter, also known as D/A Converter.
Databus – A group of bi-directional lines capable of transferring data to and from the CPU storage
and peripheral devices.
DCU – Data Concentrator Unit.
DI – Digital input. Also known as DIGIN.
Digital – A signal that has only two states e.g. On/Off 1/0 5V/0V.
DO – Digital output. Also known as DIGOUT.
DP – Differential Pressure.
DPR – Dual Pulse Receiver or turbine input.
DRAM – Dynamic Random Access Memory. Volatile storage memory used by the FloBoss S600.
When power is removed from the FloBoss S600, the contents of the DRAM memory are
assumed to be lost.
E
Ethernet – Network hardware connection.
Exponent – Base 10 Multiplier.
F
Flash Memory – Non-volatile storage memory. Although slower to access than SRAM and
DRAM, once its contents have been programmed, it requires no further attention to support that
data. The configuration files and operating system are kept here. Write protect jumpers are used
to prevent accidental programming of this memory.
FRQ – Frequency or period input.
H
Hex – Hexadecimal. Numbers in base 16, i.e. numbers 0 to 9 and letters A to F are used.
I, J, K
Integer – A whole number.
Rev Sep/04 Glossary G-2