Emerson ROC827 instruction manual Analog, Area, Attribute, Built-in I/O, C1D2, Coil

ROC827 Instruction Manual

Appendix A – Glossary

	Note: This is a generalized glossary of terms. Not all the terms may
	necessarily correspond to the particular device or software described in
	this manual. For that reason, the term “ROC” is used to identify all
	varieties of Remote Operations Controllers (including ROC800-Series,
	ROC300-Series, FloBoss™ 100-Series, FloBoss 300-Series, FloBoss 500-
	Series, and FloBoss 407 units).
A
A/D	Analog to Digital signal conversion.
ABS	Acrylonitrile Butadiene Styrene.
ADC	Analog to Digital Converter. Used to convert analog inputs (AI) to a format the flow
	computer can use.
AGA	American Gas Association. A professional organization that oversees the AGA3 (orifice),
	AGA5 (heating value), AGA7 (turbine), AGA8 (compressibility), and AGA11 (ultrasonic)
	gas flow calculation standards. See http://www.aga.org.
AWG	American Wire Gauge.
AI	Analog Input.
AO	Analog Output.
Analog	Analog data is represented by a continuous variable, such as an electrical current signal.
AP	Absolute Pressure.
API	American Petroleum Institute. See http://www.api.org.
Area	A user-defined grouping of database entities.
ASCII	American (National) Standard Code for Information Interchange.
Attribute	A parameter that provides information about an aspect of a database point. For example,
	the alarm attribute is an attribute that uniquely identifies the configured value of an alarm.
B
BMV	Base Multiplier Value, used in AGA7 (turbine) calculations.
BPS	Bits Per Second, associated with baud rate.
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 option. Also
	called “on-board” I/O.
C
C1D2	Class 1, Division 2 hazardous area
CMOS	Complementary Metal Oxide Semiconductor, a type of microprocessor used in a ROC.
Coil	Digital output, a bit to be cleared or set.
COL	Ethernet Packet Collision.
COM	Communications port on a personal computer (PC).
COMM	Communications port on a ROC used for host communications. .
	Note: On FloBoss 500-Series and FloBoss 407s, COMM1 is built-in for RS-232 serial
	communications.

Issued Mar-06 Glossary A-1