Glossary of Terms
G-4 Rev 2/01
K
Kbytes or KB — Kilobytes.
kHz — Kilohertz.
L
LCD — Liquid Crystal Display. Display-only device used for reading data.
LDP — Local Display Panel. A display-only device that plugs into a ROC300-Series unit via a
parallel interface cable. The LDP consists of a 4-line by 20-character alphanumeric display and
four pushbuttons used to access information stored by the ROC.
LED — Light-emitting diode.
LOI — Local Operator Interface. Refers to the serial (RS-232) port on the ROC or flow computer
through which local communications are established, typically for configuration software running
on a PC.
LPM — Lighting Protection Module. Use this module to provide lightning and power surge
protection for I/O on ROC and FloBoss units.
LRC — Longitudinal Redundancy Checking, a type of error checking.
M
mA — Milliamps.
MCU — Master Controller Unit.
MPU — Micro-processor Unit.
MVS — Multi-Variable Sensor. The MVS provides differential pressure, static pressure, and
temperature inputs to the FloBoss 407 (or to a Remote MVS Interface) for orifice flow calculation.
mV — Millivolts, or 0.001 volt.
mW — Milliwatts, or 0.001 watt.
N
NEC — National Electrical Code.
NEMA — National Electrical Manufacturer’s Association.
O
OH — Off-Hook modem communications signal.
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