Emerson ROC364 Manual de Instruções descarregar pdf (Página 135)

ROC364 Instruction Manual

G-1 Glossary Rev Jun/05

GLOSSARY

AGA – American Gas Association.

AI – Analog Input.

AO – Analog Output.

Analog – Analog data is represented by a continuous variable, such as an electrical current signal.

AP – Absolute Pressure.

ASCII – American (National) Standard Code for Information Interchange.

AWG – American Wire Gauge.

BTU – British Thermal Unit, a measure of heat energy.

Built-in I/O – I/O channels that are fabricated into the ROC and do not require a separate module. Also

called “on-board” I/O.

CMOS – Complementary Metal Oxide Semiconductor. Type of microprocessor used by the ROC.

COM1 / COM2 – Port on the ROC364 that may be used for host communications, depending on the

installed communications card.

Configuration – Typically, the software setup of a device, such as a ROC, that can often be defined and

changed by the user. Can also mean the hardware assembly scheme.

CSA – Canadian Standards Association.

CTS – Clear to Send modem communications signal.

DB – Database.

dB – Decibel. A unit for expressing the ratio of the magnitudes of two electric signals on a logarithmic

scale.

DCD – Carrier Detect modem communications signal.

DI – Discrete Input.

Discrete – Input or output that is non-continuous, typically representing two levels such as on/off.

DO – Discrete Output.

DMM – Digital multimeter.

DP – Differential Pressure.

DSR – Data Set Ready modem communications signal.

DTR – Data Terminal Ready modem communications signal.

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Emerson ROC364 Manual de Instruções Página 135